日本化学会 関東支部   幹事  

2011.4 - 2013.3   

有機合成化学協会   事業委員  

2009.3 - 2014.3   

Muonium Addition to the Radicalic Carbon in 1,3-Diphosphacyclobutane-2,4-diyl

Shigekazu Ito, Hikaru Akama, Yasuhiro Ueta, Iain McKenzie, Kenji M. Kojima

Bulletin of the Chemical Society of Japan   94 ( 12 )   2970 - 2972   2021.12

Muonium Addition to a peri ‐Trifluoromethylated 9‐Phosphaanthracene Producing a High‐Energy Paramagnetic π‐Conjugated Fused Heterocycle

Kota Koshino, Kenji M. Kojima, Iain McKenzie, Shigekazu Ito

Angewandte Chemie International Edition   60 ( 45 )   24034 - 24038   2021.11

TiCl ₄ ‐Mediated [2+2] Cycloaddition for Synthesis of Isolable CF ₃ ‐Substituted 2‐Azetines

Shunya Hara, Shigekazu Ito

Asian Journal of Organic Chemistry   10 ( 4 )   788 - 792   2021.4

Gold(I) Complexation of Phosphanoxy‐Substituted Phosphaalkenes for Activation‐Free LAuCl Catalysis

Miki Kato, Yasuhiro Ueta, Shigekazu Ito

Chemistry – A European Journal   27 ( 7 )   2469 - 2475   2021.2

Scalable Orbital Tuning of the 1,3-Diphosphacyclobutane-2,4-diyl Unit of Singlet Biradicaloid

Yasuhiro Ueta, Shigekazu Ito

The Journal of Organic Chemistry   85 ( 22 )   14384 - 14390   2020.11

Convenient Preparation and Structure Determination of Air‐ and Moisture‐Tolerant Difluoromethylborates

Akitaka Yokawa, Shigekazu Ito

Chemistry – An Asian Journal   15 ( 21 )   3432 - 3436   2020.11

Diels–Alder reactions of 1-phosphabutadienes: a highly selective route to PC-substituted phosphacyclohexenes Reviewed

Kazuaki S. Ohtsuki, Henry Walsgrove, Yoshihiro Hayashi, Susumu Kawauchi, Brian O. Patrick, Derek P. Gates, Shigekazu Ito

Chemical Communications   2020

Incomplete Electrocyclization of a Sterically Hindered 1,4‐Diphosphabutadiene

Tomokazu Shinozaki, Alfredo Rosas‐Sánchez, Daisuke Hashizume, Shigekazu Ito

ChemPlusChem   84 ( 11 )   1761 - 1766   2019.11

Synthetic Methodologies for Perfluoroaryl-Substituted (Diaryl)methylphosphonates, -Phosphinates via S_NAr Reaction

Kohei Fujii, Shigekazu Ito, Koichi Mikami

The Journal of Organic Chemistry   84 ( 19 )   12281 - 12291   2019.10

Investigation of Organic Molecules Using Elementary Subatomic Particle: Muon Spin Spectroscopy for Reaction Analysis of the Open-Shell Singlet Heterocycle

Shigekazu Ito

Journal of Synthetic Organic Chemistry, Japan   77 ( 8 )   800 - 812   2019.8

Muon spin rotation (µSR) study of a sterically encumbered thioaldehyde

Shigekazu Ito, Naoto Kato, Yasuhiro Ueta, Koichi Mikami, Kenji M. Kojima

Phosphorus, Sulfur and Silicon and the Related Elements   194 ( 7 )   735 - 738   2019.7

Design of Phosphinic Acid Catalysts with the Closest Stereogenicity at the α-Position: Synthesis and Application of α-Stereogenic Perfluoroalkyl Phosphinic Acid Catalysts

Kohei Fujii, Haruki Todani, Shigekazu Ito, Koichi Mikami

Organic Letters   21 ( 9 )   3387 - 3391   2019.5

Regiocontrolled Heptafluoroisopropylation of Aromatic Halides by Copper(I) Carboxylates with Heptafluoroisopropyl-Zinc Reagents

Soichiro Ono, Yuki Yokota, Shigekazu Ito, Koichi Mikami

Organic Letters   21 ( 4 )   1093 - 1097   2019.2

Study of the Air-Tolerant 1,3-Diphosphacyclobutane-2,4-diyl through the Direct Arylation Invited Reviewed

ITO Shigekazu

Chem. Rec.   18 ( 4 )   445 - 458   2018.5

Observation of a Metastable P-Heterocyclic Radical by Muonium Addition to a 1,3-Diphosphacyclobutane-2,4-diyl Reviewed

S. Ito, Y. Ueta, K. Koshino, K. M. Kojima, I. McKenzie, K. Mikami

Angew. Chem. Int. Ed.   57 ( 28 )   8608 - 8613   2018.5

CF3-Inspired Synthesis of Air-Tolerant 9-Phosphaanthracenes that Feature Fluorescence and Crystalline Polymorphs Reviewed

Shigekazu Ito, Kota Koshino, Koichi Mikami

Chemistry - An Asian Journal   13 ( 7 )   830 - 837   2018.4

Topics of 1,3-diphosphacyclobutane-2,4-diyl derivatives: Structural aspects and functionality of isolable heavier congeners of cyclobutane-1,3-diyl and the related molecules Invited Reviewed

Shigekazu Ito

Tetrahedron Letters   59 ( 1 )   1 - 13   2018.1

gem-Digold Acetylide Complexes for Catalytic Intermolecular [4 + 2] Cycloaddition: Having Two Gold Centers Is Better for Asymmetric Catalysis Reviewed

M. Nanko, S. Shibuya, Y. Inaba, S. Ono, S. Ito, K. Mikami

Org. Lett.   20 ( 23 )   7353 - 7357   2018

Stereoselective Catalytic Synthesis of Alkynylated Phosphaethenes Leading to Activation-Free Gold Catalysis Reviewed

Shigekazu Ito, Tomokazu Shinozaki, Koichi Mikami

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY   ( 46 )   6889 - 6900   2017.12

2,3-Dihydro-1H-naphtho[1,8-cd]borinine as a Potent Precursor for Open-Shell Singlet B-Heterocycles Reviewed

Shigekazu Ito, Naoto Kato, Koichi Mikami

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY   ( 22 )   2936 - 2939   2017.6

Air-Tolerant 1-Amino-1,3-diphosphacyclobutane-2,4-diyls Featuring Strong Electron-Donating Properties and Small HOMO-LUMO Gaps Reviewed

Shigekazu Ito, Yasuhiro Ueta, Trang Thi Thu Ngo, Kota Koshino, Koichi Mikami

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY   ( 24 )   3048 - 3052   2017.6

Stable (sila)difluoromethylboranes via C-F activation of fluoroform derivatives Reviewed

Shigekazu Ito, Naoto Kato, Koichi Mikami

CHEMICAL COMMUNICATIONS   53 ( 40 )   5546 - 5548   2017.5

Air-Tolerant 1-Amino-1,3-diphosphacyclobutane-2,4-diyls Featuring High Electron-Donating Property and Low HOMO–LUMO Gap Reviewed

S. Ito, Y. Ueta, T. T, T. Ngo, K. Koshino, K. Mikami

Eur. J. Inorg. Chem.   ( 24 )   3048 - 3052   2017

Palladium-Catalyzed Arylation of a Sterically Demanding gem-Dibromophosphaethene Reviewed

Shigekazu Ito, Tomokazu Shinozaki, Koichi Mikami

CHEMISTRYSELECT   1 ( 16 )   5260 - 5264   2016.10

Exploration of 1-Arylmethyl-1,3-diphosphacyclobutane-2,4-diyls as Hole Transfer Materials Reviewed

Shigekazu Ito, Yushi Torihata, Koichi Mikami

CHEMISTRYSELECT   1 ( 12 )   3310 - 3315   2016.8

Stereochemistry of N-Benzoyl-5-substituted-1-benzazepines Revisited: Synthesis of the Conformationally Biased Derivatives and Revision of the Reported Structure Reviewed

Hidetsugu Tabata, Tetsuya Yoneda, Tomohiko Tasaka, Shigekazu Ito, Tetsuta Oshitari, Hideyo Takahashi, Hideaki Natsugari

JOURNAL OF ORGANIC CHEMISTRY   81 ( 8 )   3136 - 3148   2016.4

Dynamic Chirality Control of tropos DPCB-digold Skeleton by Chiral Binaphthyldicarboxylate Reviewed

Shigekazu Ito, Masaki Nanko, Tomokazu Shinozaki, Masafumi Kojima, Kohsuke Aikawa, Koichi Mikami

CHEMISTRY-AN ASIAN JOURNAL   11 ( 6 )   823 - 827   2016.3

Access to Air-Stable 1,3-Diphosphacyclobutane-2,4-diyls by an Arylation Reaction with Arynes Reviewed

Yasuhiro Ueta, Koichi Mikami, Shigekazu Ito

Angewandte Chemie - International Edition   55 ( 26 )   7525 - 7529   2016

Chemical Detection of Hydrogen Fluoride by the Phosphorus Congener of Cyclobutane-1,3-diyl Reviewed

Yasuhiro Ueta, Koichi Mikami, Shigekazu Ito

INORGANIC CHEMISTRY   54 ( 17 )   8778 - 8785   2015.9

Preparation via Sterically Promoted SN2 ' Substitution and Structural Characteristics of a Mes*-Substituted Tertiary Ethynylphosphine Reviewed

Shigekazu Ito, Masaki Nanko, Koichi Mikami

HETEROATOM CHEMISTRY   25 ( 5 )   422 - 427   2014.11

pi-Extended DPCB for Activation-Free Homogeneous Gold Catalysis Reviewed

Shigekazu Ito, Masaki Nanko, Koichi Mikami

CHEMCATCHEM   6 ( 8 )   2292 - 2297   2014.8

Formation of phosphanoxy-substituted phosphaalkenes via sterically promoted cleavage of the P = P diphosphene bond Reviewed

Shigekazu Ito, Shunsuke Okabe, Yasuhiro Ueta, Koichi Mikami

CHEMICAL COMMUNICATIONS   50 ( 65 )   9204 - 9206   2014.8

Theoretical studies on the intramolecular cyclization of 2,4,6-t-Bu3C6H2P=C: and effects of conjugation between the P=C and aromatic moieties Reviewed

Masaaki Yoshifuji, Shigekazu Ito

BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY   10   1032 - 1036   2014.5

Direct alpha-Siladifluoromethylation of Lithium Enolates with Ruppert-Prakash Reagent via C-F Bond Activation Reviewed

Ryota Hashimoto, Toshiaki Iida, Kohsuke Aikawa, Shigekazu Ito, Koichi Mikami

CHEMISTRY-A EUROPEAN JOURNAL   20 ( 10 )   2750 - 2754   2014.3

Paradigm Shift from Alkaline (Earth) Metals to Early Transition Metals in Fluoroorganometal Chemistry: Perfluoroalkyl Titanocene(III) Reagents Prepared via Not Titanocene(II) but Titanocene(III) Species Reviewed

Motohiro Fujiu, Ryota Hashimoto, Yuzo Nakamura, Kohsuke Aikawa, Shigekazu Ito, Koichi Mikami

CHEMISTRY-A EUROPEAN JOURNAL   20 ( 8 )   2382 - 2386   2014.2

Paradigm Shift from Alkaline (Earth) Metals to Early Transition Metals in Metalorganofluorine Chemistry: Perfluoroalkyl Titanocene(III) Reagents in situ Prepared via Not Titanocene(II) but Titanocene(III) Species Reviewed

M. Fujiu, R. Hashimoto, Y. Nakamura, K. Aikawa, S. Ito, K. Mikami

Chem. Eur. J.   20 ( 8 )   2382 - 2386   2014

Direct Arylations for Study of the Air-Stable P-Heterocyclic Biradical: From Wide Electronic Tuning to Characterization of the Localized Radicalic Electrons Reviewed

Shigekazu Ito, Yasuhiro Ueta, Trang Thi Thu Ngo, Makoto Kobayashi, Daisuke Hashizume, Jun-ichi Nishida, Yoshiro Yamashita, Koichi Mikami

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   135 ( 46 )   17610 - 17616   2013.11

Stereoselective synthesis, structural aspects, and NMR properties of stable C-fluorinated phosphaalkenes Reviewed

Shigekazu Ito, Takeshi Nakagawa, Koichi Mikami

Chemical Communications   49 ( 80 )   9221 - 9223   2013.10

Silyl Effects on 1,3-Diphosphacyclobutane-2,4-diyl: Ring-Opening of Tetrahydrofuran and Promotion of Reductive PC Cleavage Reviewed

Shigekazu Ito, Trang Thi Thu Ngo, Koichi Mikami

CHEMISTRY-AN ASIAN JOURNAL   8 ( 9 )   1976 - 1980   2013.9

Through-space Electrostatic Interaction between the Electron-donating 1,3-Diphosphacyclobutane-2,4-diyl Units Reviewed

Shigekazu Ito, Makoto Kobayashi, Koichi Mikami

ORGANIC LETTERS   15 ( 13 )   3404 - 3407   2013.7

Phosphorus Version of the Fritsch-Buttenberg-Wiechell Reaction Reviewed

Masaaki Yoshifuji, Shigekazu Ito

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   188 ( 1-3 )   140 - 145   2013.1

Direct Arylations for Study of the Air-Stable P‑Heterocyclic Biradical: From Wide Electronic Tuning to Characterization of the Localized Radicalic Electrons Reviewed

S. Ito, Y. Ueta, T. T, T. Ngo, M. Kobayashi, D. Hashizume, J.-i. Nishida, Y. Yamashita, K. Mikami

J. Am. Chem. Soc.   135 ( 46 )   13610 - 13616   2013

Direct Preparation of Trifluoromethylindium Reagents from Trifluoromethyl Iodide: Effective Trifluoromethylation and Perfluoroalkylation Reagents Reviewed

Motohiro Fujiu, Yuzo Nakamura, Hiroki Serizawa, Kohsuke Aikawa, Shigekazu Ito, Koichi Mikami

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY   ( 36 )   7043 - 7047   2012.12

New Aspects of 1,3-Diphosphacyclobutane-2,4-diyls Reviewed

Masaaki Yoshifuji, Yuichi Hirano, Gregor Schnakenburg, Rainer Streubel, Edgar Niecke, Shigekazu Ito

HELVETICA CHIMICA ACTA   95 ( 10 )   1723 - 1729   2012.10

Spectroscopic and stability studies on unsymmetrical 1,3-dialkyl-1,3-diphosphacyclobutane-2,4-diyls Reviewed

Shigekazu Ito, Manabu Kikuchi, Joji Miura, Noboru Morita, Masaaki Yoshifuji

JOURNAL OF PHYSICAL ORGANIC CHEMISTRY   25 ( 9 )   733 - 737   2012.9

高安定性リン複素環一重項ビラジカルおよび関連化合物の合成と性質”，有機合成化学協会誌 Invited

伊藤 繁和

有機合成化学協会誌   70 ( 7 )   731 - 741   2012.7

Unique molecular distortion in the 2,4,6-tri-t-butylphenyl group Invited Reviewed

Shigekazu Ito, Hideaki Miyake, Masaaki Yoshifuji

ARKIVOC   6 - 14   2012

Umpolung of Fluoroform by C?F Bond Activation: Direct Difluoromethylation of Lithium Enolates Reviewed

Toshiaki Iida, Ryota Hashimoto, Kohsuke Aikawa, Shigekazu Ito, Koichi Mikami

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   51 ( 38 )   9535 - 9538   2012

Umpolung of Fluoroform via C-F Bond Activation: Simple Difluoromethylation of Lithium Enolates with Fluoroform Reviewed

T. Iida, R. Hashimoto, K. Aikawa, S. Ito, K. Mikami

Angew. Chem. Int. Ed.   51 ( 38 )   9535 - 9538   2012

Combination of sp(2)- and sp(3)-Type Phosphorus Atoms for Gold Chemistry: Preparation, Structure, and Catalytic Activity of Gold Complexes That Bear Ligated 2-Silyl-1,3-diphosphapropenes Reviewed

Shigekazu Ito, Lili Zhai, Koichi Mikami

CHEMISTRY-AN ASIAN JOURNAL   6 ( 11 )   3077 - 3083   2011.11

[2,3] WITTIG REARRANGEMENT OF beta '-HYDROXYETHYL BIS-ALLYLIC ETHERS: HIGHLY REGIOSPECIFIC ENTRY TO SINGLY DEHYDROXYLATED 19-NOR-1(OR 3),25-DIHYDROXYVITAMIN D-3 Reviewed

Koichi Mikami, Kumiko Fujita, Kazuki Wakabayashi, Shigekazu Ito

HETEROCYCLES   82 ( 2 )   1163 - +   2011.3

NMR STUDIES OF 1-tert-BUTYL-3-METHYL-2,4-BIS(2,4,6-TRI-tert-BUTYLPHENYL)-1,3-DIPHOSPHACYCLOBUTANE-2,4-DIYL Reviewed

Masaaki Yoshifuji, Stefan T. Osborn, Anthony J. Arduengo, Kenneth A. Belmore, Shigekazu Ito

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   186 ( 4 )   845 - 846   2011

Intensive NMR Study of 1-t-Butyl-3-methyl-2,4-bis(2,4,6-tri-t-butylphenyl)-1,3-diphosphacyclobutane-2,4-diyl Reviewed

Masaaki Yoshifuji, Stefan T. Osborn, Anthony J. Arduengo, Kenneth A. Belmore, Shigekazu Ito

HETEROATOM CHEMISTRY   22 ( 3-4 )   331 - 338   2011

MODELING THE DIRECT ACTIVATION OF DIHYDROGEN BY A P2C2-CYCLIC BIRADICAL: FORMATION OF A CYCLIC BIS(P-H lambda(5)-PHOSPHORANE) Reviewed

Shigekazu Ito, Joji Miura, Noboru Morita, Masaaki Yoshifuji, Anthony J. Arduengo

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   186 ( 4 )   754 - 755   2011

DIVERSE REACTIONS OF STERICALLY PROTECTED 1,3-DIPHOSPHACYCLOBUTANE-2,4-DIYLS WITH HYDRIDE Reviewed

Shigekazu Ito, Joji Miura, Noboru Morita, Masaaki Yoshifuji, Anthony J. Arduengo

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   186 ( 4 )   756 - 757   2011

Synthesis and physicochemical properties of stable 1,3-diphosphacyclobutane-2,4-diyls bearing sulfanyl groups Reviewed

Shigekazu Ito, Joji Miura, Noboru Morita, Masaaki Yoshifuji, Anthony J. Arduengo

COMPTES RENDUS CHIMIE   13 ( 8-9 )   1180 - 1184   2010.8

Highly enantioselective synthesis of alpha-(perfluoroalkyl)amines via hydrogenation of enamide precursors in the presence of chiraphos-rhodium catalyst Reviewed

Koichi Mikami, Tatsushi Murase, Lili Zhai, Yoshimitsu Itoh, Shigekazu Ito

TETRAHEDRON-ASYMMETRY   21 ( 9-10 )   1158 - 1161   2010.5

Sequential perfluoroalkylation and asymmetric reduction of nitriles triggered with perfluoroalkyl titanates: catalytic asymmetric synthesis of perfluoroalkyl amines Reviewed

Koichi Mikami, Tatsushi Murase, Lili Zhai, Susumu Kawauchi, Yoshimitsu Itoh, Shigekazu Ito

TETRAHEDRON LETTERS   51 ( 10 )   1371 - 1373   2010.3

Ligand effect of bulky 2,2-dialkyl-1-phosphaethenes on Au-catalyzed cycloisomerization of 1,6-enynes and lactonization of pent-4-ynoic acids Reviewed

Shigekazu Ito, Shuhei Kusano, Noboru Morita, Koichi Mikami, Masaaki Yoshifuji

JOURNAL OF ORGANOMETALLIC CHEMISTRY   695 ( 2 )   291 - 296   2010.1

Diverse reactions of sterically-protected 1,3-diphosphacyclobutane-2,4-diyls with hydride Reviewed

Shigekazu Ito, Joji Miura, Noboru Morita, Masaaki Yoshifuji, Anthony J. Arduengo

DALTON TRANSACTIONS   39 ( 35 )   8281 - 8287   2010

Synthesis and Properties of Oligo(biradicals) Composed of 1,3-Diphosphacyclobutane-2,4-diyl Units and Benzyl-type Linkers Reviewed

Shigekazu Ito, Joji Miura, Noboru Morita, Masaaki Yoshifuji, Anthony J. Arduengo

HETEROATOM CHEMISTRY   21 ( 6 )   404 - 411   2010

Demonstrations of NMR Quantum Information Processing Utilizing P-31 Nuclei of Phosphorus Heterocycles Reviewed

Shigekazu Ito, Taro Momozaki, Yuta Kishimoto, Jiro Abe, Fumiyasu Iwahori

CHEMISTRY LETTERS   38 ( 12 )   1194 - 1195   2009.12

Modeling the Direct Activation of Dihydrogen by a P2C2 Cyclic Biradical: Formation of a Cyclic Bis(P-H lambda(5)-phosphorane) Reviewed

Shigekazu Ito, Joji Miura, Noboru Morita, Masaaki Yoshifuji, Anthony J. Arduengo

INORGANIC CHEMISTRY   48 ( 17 )   8063 - 8065   2009.9

Catenation of 1,3-Diphosphacyclobutane-2,4-diyl Units Having 2,4,6-Tri-tert-butylphenyl Protecting Groups and a P-sec-Butyl Group in the Ring Reviewed

Shigekazu Ito, Joji Miura, Noboru Morita, Masaaki Yoshifuji, Anthony J. Arduengo

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE   635 ( 3 )   488 - 495   2009

Study on Synthesis and Structure of Sterically Demanding 6-Phosphafulvenes Reviewed

Shigekazu Ito, Hideaki Miyake, Masaaki Yoshifuji

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   184 ( 4 )   917 - 927   2009

Poly(biradicals): Oligomers of 1,3-diphosphacyclobutane-2,4-diyl units Reviewed

Shigekazu Ito, Joji Miura, Noboru Morita, Masaaki Yoshifuji, Anthony J. Arduengo

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   47 ( 34 )   6418 - 6421   2008

1,3-dipolarophile character of an extremely bulky phosphaalkyne Mes*C P (Mes*=2,4,6-tBu(3)C(6)H(2)) leading to the formation of 1,2,4-diazaphospholes with unique hydrogen bonding properties Reviewed

Shigekazu Ito, Hideaki Miyake, Masaaki Yoshifuji

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY   ( 22 )   3491 - 3496   2007.8

Improved preparative method for 1,2-diaryl-3,4-diphosphinidenecyclobutenes and its application to the studies of 1,2-bis(arylthienyl)-3,4-diphosphinidenecyclobutenes

Kozo Toyota, Keiko Horikawa, Rader S. Jensen, Kouhei Omori, Subaru Kawasaki, Shigekazu Ito, Masaaki Yoshifuji, Noboru Morita

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   80 ( 8 )   1580 - 1586   2007.8

Preparation and X-ray analyses of siloxane-bridged acyclic and 8-membered cyclic phosphaethenes

Shigekazu Ito, Hiromichi Jin, Masaaki Yoshifuji

JOURNAL OF ORGANOMETALLIC CHEMISTRY   692 ( 1-3 )   243 - 247   2007.1

Preparation of optically active piperazines from ethyl (S)-2-(2-alkyl-1-aziridinyl)acetates.

Yahiro Nobuhide, Ito Shigekazu

Bull. Chem. Soc. Jpn.   59 ( 1 )   321 - 322   1986

Design, synthesis, and application of phosphaalkenes to unique palladium and gold catalysts

Shigekazu Ito, Matthias Freytag, Hongze Liang, Katsunori Nishide, Masaaki Yiishifuji

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   183 ( 2-3 )   555 - 557   2008.2

Facile [3+2] dimerization and formal dehydrogenative coupling mode of a cyanophenylphosphaallene

Shigekazu Ito, Sou Hashino, Noboru Morita, Masaaki Yoshifuji, Daisuke Hirose, Masae Takahashi, Yoshiyuki Kawazoe

TETRAHEDRON   63 ( 41 )   10246 - 10252   2007.10

Synthesis and properties of air-stable 1,3-diphosphacyclobutane-2,4-diyls and the related compounds

Shigekazu Ito, Manabu Kikuchi, Hiroki Sugiyama, Masaaki Yoshifuji

JOURNAL OF ORGANOMETALLIC CHEMISTRY   692 ( 13 )   2761 - 2767   2007.6

1,3-Dipolarophile Character of an Extremely Bulky Phosphaalkyne Mes*C≡P (Mes* = 2,4,6-t-Bu3C6H2) Leading to the Formation of 1,2,4-Diazaphospholes of Unique H-Bonding Aspect

Eur. J. Inorg. Chem.   ,3491-3496   2007

1,3-Dipolarophile Character of an Extremely Bulky Phosphaalkyne Mes*C≡P (Mes* = 2,4,6-t-Bu3C6H2) Leading to the Formation of 1,2,4-Diazaphospholes of Unique H-Bonding Aspect

Eur. J. Inorg. Chem.   ,3491-3496   2007

Coordination Behavior of sterically protected phosphaalkenes on the AuCl moiety leading to catalytic 1,6-enyne cycloisomerization

Matthias Freytag, Shigekazu Ito, Masaaki Yoshifuji

CHEMISTRY-AN ASIAN JOURNAL   1 ( 5 )   693 - 700   2006.11

Oxidation of 1,3-diphosphacyclobutane-2,4-diyl with ammoniumyl antimonate and EPR study of the corresponding cation radical

Masaaki Yoshifuji, Anthony J. Arduengo, Tatyana A. Konovalova, Lowell D. Kispert, Manabu Kikuchi, Shigekazu Ito

CHEMISTRY LETTERS   35 ( 10 )   1136 - 1137   2006.10

Structural and coordination properties of 3,3-diphenyl-1-(2,4,6-tri-tert-butylphenyl)-2-(trimethylsilyl)-1,3-diphosphapropene derivatives showing interesting conformational features

S Ito, K Nishide, M Yoshifuji

ORGANOMETALLICS   25 ( 6 )   1424 - 1430   2006.3

Structural and coordination properties of 1,2-bis(cyclopropyl)-3,4-bis(2,4,6-tri-tert-butylphenyl)-3,4-diphosphinidenecyclobutene prepared by dehydrogenative homocoupling of 3-cyclopropyl-l-(2,4,6-tri-tert-butylphenyl)-1-phosphaallene

S Ito, M Freytag, M Yoshifuji

DALTON TRANSACTIONS   ( 5 )   710 - 713   2006.2

Preparation and characterization of an air-tolerant 1,3-diphosphacyclobuten-4-yl radical

Shigekazu Ito, Manabu Kikuchi, Masaaki Yoshifuji, Anthony J. Arduengo, Tatyana A. Konovalova, Lowell D. Kispert

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   45 ( 26 )   4341 - 4345   2006

Preparation and properties of palladium(II) complexes of 3-oxo-1-(2,4,6-tri-t-butylphenyl)-1,3-diphosphapropenes

K Nishide, HZ Liang, S Ito, M Yoshifuji

JOURNAL OF ORGANOMETALLIC CHEMISTRY   690 ( 21-22 )   4809 - 4815   2005.11

Synthesis of phosphorus ylides bearing a P-H bond from a kinetically stabilized 1,3,6-triphosphafulvene

S Ito, H Miyake, M Yoshifuji, T Holtzl, T Veszpremi

CHEMISTRY-A EUROPEAN JOURNAL   11 ( 20 )   5960 - 5965   2005.10

An efficient synthetic method of 1-(2,4,6-tri-t-butylphenyl)-3-phenyl-1-phosphaallenes [Mes*P=C=CR-Ph; R = H, SiMe3] from dibromophosphaethene [Mes*P=CBr2] (Mes*=2,4,6-t-Bu3C6H2)

S Ito, S Sekiguchi, M Freytag, M Yoshifuji

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   78 ( 6 )   1142 - 1144   2005.6

Syntheses and reactivity of novel unsaturated cyclic compounds containing phosphorus atoms

M Yoshifuji, H Sugiyama, S Ito

JOURNAL OF ORGANOMETALLIC CHEMISTRY   690 ( 10 )   2515 - 2520   2005.5

1,3-diphosphapropenes for novel chemistry of metal complexes

S Ito, HZ Liang, M Yoshifuji

JOURNAL OF ORGANOMETALLIC CHEMISTRY   690 ( 10 )   2531 - 2535   2005.5

Synthesis, structure, and reactivity of novel 3,4-diphosphacyclobutenes bearing silyl groups

S Ito, H Jin, S Kimura, M Yoshifuji

JOURNAL OF ORGANIC CHEMISTRY   70 ( 9 )   3537 - 3541   2005.4

Reactions of 1,3,6-Triphosphafulvene and the Related Compounds Affording Unique Phosphorus Compounds

Ito Shigekazu, Miyake Hideaki, Yoshifuji Masaaki

Abstracts of Symposium on Physical Organic Chemistry   55 ( 0 )   15 - 15   2005

Preparation of 1,3-diphosphabuta-1,3-dienes from sterically encumbered phosphaalkyne and phosphaethenyllithium

S Ito, H Miyake, H Sugiyama, M Yoshifuji

HETEROATOM CHEMISTRY   16 ( 5 )   357 - 360   2005

Characterization of a 3,4-dihydro-1,3,4-triphosphacyclopenta[a]indene as an isomer of a Mes*-substituted 1,3,6-triphosphafulvene (Mes*=2,4,6-t-Bu3C6H2)

S Ito, H Miyake, H Sugiyama, M Yoshifuji

HETEROCYCLES   63 ( 11 )   2591 - 2596   2004.11

Reactivity of a kinetically stabilized 1,3,6-triphosphafulvene toward some nucleophiles

S Ito, H Miyake, H Sugiyama, M Yoshifuji

TETRAHEDRON LETTERS   45 ( 38 )   7019 - 7021   2004.9

Formation and electrochemical properties of a 1,4-diphosphafulvene including formal dimerization of phosphaallene

S Ito, S Sekiguchi, M Yoshifuji

JOURNAL OF ORGANIC CHEMISTRY   69 ( 12 )   4181 - 4184   2004.6

Preparation and reactions of 1,3-diphosphacyclobutane-2,4-diyls that feature an amino substituent and/or a carbonyl group

H Sugiyama, S Ito, M Yoshifuji

CHEMISTRY-A EUROPEAN JOURNAL   10 ( 11 )   2700 - 2706   2004.6

Synthesis and characterization of kinetically stabilized 1,3-diphosphacyclobutene derivatives

S Ito, H Sugiyama, M Yoshifuji

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   179 ( 4-5 )   785 - 788   2004.4

Preparation and coordination properties including catalytic activities of a bulky 2-methyl-3-thioxo-1 3-diphosphapropene

HZ Liang, S Ito, M Yoshifuji

ORGANIC LETTERS   6 ( 3 )   425 - 427   2004.2

低配位燐化合物及其最新発展

中国有機化学界誌   24 ( 10 )   1310 - 1316   2004

Monochalcogenization of a Sterically Encumbered 1,4-Diphosphafulvene

The Science Reports of the Tohoku University First Series   81 ( 1 )   17 - 23   2004

Product Class 23: Diphosphinines. Two P Atoms

Georg Thieme Verlag Science of Synthesis (Houben-Weyl Methods of Molecular Transformations)   16   1399 - 1410   2004

Product Class 23: Diphosphinines. Two P Atoms

Georg Thieme Verlag Science of Synthesis (Houben-Weyl Methods of Molecular Transformations)   16   1399 - 1410   2004

Chemistry and Recent Development of Low-Coordinated Phosphaalkenes

Chinese Journal of Organic Chemistry   24 ( 10 )   1310 - 1316   2004

Reduction of a sterically protected 1,3,6-triphosphafulvene

Miyake Hideaki, Sugiyama Hiroki, Ito Shigekazu, Yoshifuji Masaaki

Abstracts of Symposium on Physical Organic Chemistry   17 ( 0 )   166 - 166   2004

Characterization of a novel binuclear palladium(II) complex formed from the reaction of 2-chloro-3,3-diphenyl-1-(2,4,6-tri-tert-butylphenyl)-1,3-diphosphapropene with tetrakis(triphenylphosphine)palladium(0) including hydrolysis

H Liang, S Ito, M Yoshifuji

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE   630 ( 8-9 )   1177 - 1180   2004

Monochalcogenization of a Sterically Encumbered 1,4-Diphosphafulvene

The Science Reports of the Tohoku University First Series   81 ( 1 )   17 - 23   2004

Topochemical [2+2] dimerization of kinetically stabilized 1-phosphaallenes in the solid state

S Ito, S Sekiguchi, M Yoshifuji

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY   ( 24 )   4838 - 4841   2003.12

Preparation, properties, and catalytic activity of transition-metal complexes containing a ligated 2-methyl-3,3-diphenyl-1,3-diphosphapropene skeleton

HZ Liang, K Nishide, S Ito, M Yoshifuji

TETRAHEDRON LETTERS   44 ( 45 )   8297 - 8300   2003.11

Preparation of carbonyltungsten(0) complexes of 2-pyridylphosphines showing a stepwise coordination pattern by way of monodentate to chelate mode

K Nishide, S Ito, M Yoshifuji

JOURNAL OF ORGANOMETALLIC CHEMISTRY   682 ( 1-2 )   79 - 84   2003.10

Experimental and theoretical studies on the conjugation of the phosphorus-carbon double bond with a cyclopropyl group

S Kimura, S Ito, M Yoshifuji, T Veszpremi

JOURNAL OF ORGANIC CHEMISTRY   68 ( 17 )   6820 - 6823   2003.8

Preparation, structure, and reaction of a sterically encumbered 1-phosphaallene containing a cyclopropylidene moiety

S Ito, S Kimura, M Yoshifuji

ORGANIC LETTERS   5 ( 7 )   1111 - 1114   2003.4

Preparation and properties of kinetically stabilized phosphaethene derivatives carrying the methylsulfanyl group

S Ito, S Kimura, M Yoshifuji

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   76 ( 2 )   405 - 412   2003.2

Synthesis of a 1,3-diphosphacyclobutane-2,4-diyl from Mes*C P

H Sugiyama, S Ito, M Yoshifuji

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   42 ( 32 )   3802 - 3804   2003

Preparation, structure and coordination properties of 3,3-bis(diisopropylamino)-3-thioxo-1-(2,4,6-tri-tert-butylphenyl)1,3-diphosphapropene

HZ Liang, S Ito, M Yoshifuji

ORGANIC & BIOMOLECULAR CHEMISTRY   1 ( 17 )   3054 - 3058   2003

Preparation, structure, and some coordination properties of 2-chloro-3,3-diphenyl-3-thioxo-1-(2,4,6-tri-t-butylphenyl)-1,3-diphosphapropene

S Ito, HZ Liang, M Yoshifuji

CHEMICAL COMMUNICATIONS   ( 3 )   398 - 399   2003

Chemistry of phosphanylidene carbenoids

M Yoshifuji, S Ito

NEW ASPECTS IN PHOSPHORUS CHEMISTRY II   223   67 - 89   2003

Stereoselective Formation and Reactivity of Sterically Encumbered Anilinodiphosphene Derivatives

Sci. Rep. Tohoku Univ. 1st Ser   80 ( 1 )   21 - 25   2003

Synthesis of a 1,3-Diphosphacyclobutane-2,4-diyl from Mes*CP (Mes* = 2,4,6-tBu3C6H2)

Angewandte Chemie International Edition   42 ( 32 )   3802 - 3804   2003

Chemistry of Phosphanylidene Carbenoids

Topics in Current Chemistry   223   67 - 89   2003

Stereoselective Formation and Reactivity of Sterically Encumbered Anilinodiphosphene Derivatives

Sci. Rep. Tohoku Univ. 1st Ser   80 ( 1 )   21 - 25   2003

Preparation of some 1,4-diphospha-1,3-butadienes by oxidative coupling reaction

S Kimura, S Ito, M Yoshifuji

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   177 ( 8-9 )   2009 - 2009   2002.8

Preparation of 2,4-bis(2,4,6-tri-tert-butylphenyl)-1,3-diphosphacyclobutenes from 2-(2,4,6-tri-tert-butylphenyl)-1-phosphaethyne and alkyllithiums

S Ito, H Sugiyama, M Yoshifuji

CHEMICAL COMMUNICATIONS   ( 16 )   1744 - 1745   2002.8

Preparation and reactions of bulky ethynylphosphines

K Nishide, S Ito, M Yoshifuji

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   177 ( 8-9 )   2011 - 2012   2002.8

Synthesis and structure of a kinetically stabilized 1,3,6-triphosphafulvene

H Sugiyama, S Ito, M Yoshifuji

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   177 ( 8-9 )   2013 - 2014   2002.8

Synthesis of pentacarbonyltungsten(0) complexes of bulky 1,2-diphosphabut-1-en-3-ynes as a heavier enyne congener

S Ito, K Nishide, M Yoshifuji

TETRAHEDRON LETTERS   43 ( 29 )   5075 - 5078   2002.7

Copper-mediated coupling reaction of kinetically stabilized 1-methyl-2-phosphaethenyllithiums involving an isomerization to a 3-phospha-2-propenyllithium derivative

S Ito, S Kimura, M Yoshifuji

CHEMISTRY LETTERS   ( 7 )   708 - 709   2002.7

Coordination chemistry of a bulky 1,3-diphosphapropene with carbonyltungsten(0) moieties

S Ito, M Yoshifuji

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   177 ( 6-7 )   1609 - 1612   2002.6

Preparation and reaction of sterically crowded N-(2, 4-di-t-butylphenyl)-N-methylaminodichlorophosphine

François Rivière, Shigekazu Ito, Masaaki Yoshifuji

Tetrahedron Letters   43 ( 1 )   119 - 121   2002.1

Preparation and reaction of sterically crowded N-(2,4-di-t-butylphenyl)-N-methylaminodichlorophosphine

F Riviere, S Ito, M Yoshifuji

TETRAHEDRON LETTERS   43 ( 1 )   119 - 121   2002.1

Reactions of Sterically Encumbered 1-Phosphapropen-1-ones Including a Nucleophilic Substitution and an Intramolecular Cyclization

Sci. Rep. Tohoku Univ. 1st Ser.   79 ( 1 )   9 - 16   2002

Reactions of Sterically Encumbered 1-Phosphapropen-1-ones Including a Nucleophilic Substitution and an Intramolecular Cyclization

Sci. Rep. Tohoku Univ. 1st Ser.   79 ( 1 )   9 - 16   2002

Coordination chemistry of a bulky 1,3-diphosphapropene with carbonyltungsten(0) moieties

Shigekazu Ito, Masaaki Yoshifuji

Phosphorus, Sulfur and Silicon and Related Elements   177 ( 6-7 )   1609 - 1612   2002

東北大学理学部化学科学生実験における環境調和型化学反応の導入

伊藤 繁和, 岩本 武明

日本化学会 化学と教育   50 ( 6 )   433 - 436   2002

Synthesis and structure of a kinetically stabilized 1,3,6-triphosphafulvene

Hiroki Sugiyama, Shigekazu Ito, Masaaki Yoshifuji

Phosphorus, Sulfur and Silicon and Related Elements   177 ( 8-9 )   2013 - 2014   2002

Preparation of 2,4-Bis(2,4,6-tri-t-butylphenyl)-1,3-diphosphacyclobutenes from 2-(2,4,6-Tri-t-butylphenyl)-1-phosphaethyne and Alkyllithiums

Chemical Communications   ( 16 )   1744 - 1745   2002

Dehydrogenative silylation of ketones catalyzed by diphosphinidenecyclobutene-coordinated platinum(II) complexes

F Ozawa, S Yamamoto, S Kawagishi, M Hiraoka, S Ikeda, T Minami, S Ito, M Yoshifuji

CHEMISTRY LETTERS   ( 10 )   972 - 973   2001.10

1,3,6-Triphosphafulvene Bearing Three Low-Coordinated Phosphorus Atoms

Phosphorus Sulfur Silicon Relat. Elem.   168 ( 1 )   315 - 319   2001

1,3,6-triphosphafulvene bearing three low-coordinated phosphorus atoms

M Yoshifuji, S Ito, H Sugiyama

PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS   168 ( 1 )   315 - 319   2001

Preparation of carbonyltungsten(0) complexes of 2-chloro-3,3-diphenyl-1-(2,4,6-tri-tert-butylphenyl)-1,3-diphosphapropene

Shigekazu Ito, Masaaki Yoshifuji

Chemical Communications   1 ( 13 )   1208 - 1209   2001

Transmetallation reaction of 1-phenylthio- or 1-tolylthio-2-(2,4,6-tri-t-butylphenyl)-2-phosphaethenyllithium with copper(II) and mercury(II)

S Ito, M Yoshifuji

CHEMISTRY LETTERS   ( 12 )   1390 - 1391   2000.12

Reactions of a sterically protected 2,3-dichloro-1,4-diphospha-1,3-butadiene with some alkyl and hydrido lithium reagents

Shigekazu Ito, Kozo Toyota, Masaaki Yoshifuji

Heteroatom Chemistry   11 ( 3 )   171 - 176   2000

Reactions of a sterically protected 2,3-dichloro-1,4-diphospha-1,3-butadiene with some alkyl and hydride lithium reagents

S Ito, K Toyota, M Yoshifuji

HETEROATOM CHEMISTRY   11 ( 3 )   171 - 176   2000

Isolation of a kinetically stabilized 1,3,6-triphosphafulvene

S Ito, H Sugiyama, M Yoshifuji

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   39 ( 15 )   2781 - 2783   2000

Reactions of Sterically Protected 1-Halo-and 1-Pseudohalo-2-Phosphaethenyl-lithiums

Phosphorus, Sulfur' and Silicon   147   441   1999

Reactions of Sterically Protected 1-Halo-and 1-Pseudohalo-2-Phosphaethenyl-lithiums

Phosphorus, Sulfur' and Silicon   147   441   1999

The phenylthio group as a new substituent on the 2-position of sterically protected 1-phosphaethenes

S Ito, M Yoshifuji

CHEMISTRY LETTERS   ( 7 )   651 - 652   1998.7

A convenient synthesis of a sterically protected 1,4-diphosphabutatriene and its pentacarbonyltungsten complexes

S Ito, K Toyota, M Yoshifuji

JOURNAL OF ORGANOMETALLIC CHEMISTRY   553 ( 1-2 )   135 - 140   1998.2

The Phenylthio Group as a New Substituent on the 2-Position of Sterically Protected 1-Phosphaethenes

Chemistry Letters   ( 7 )   651 - 652   1998

A Convenient Synthesis of a Sterically Protected 1,4-Diphospha butatriene and Its Pentacarbonyltungsten Complexes

Journal of Organometallic Chemistry   553 ( 1 )   135 - 140   1998

Formation of 6,8-di-tert-butyl-3,4-dihydro-4,4-dimethyl-1-phosphanaphthalene by the reaction of 2,2-dibromo-1-(2,4,6-tri-tert-butylphenyl)-1-phosphaethene with butyllithium

S Ito, K Toyota, M Yoshifuji

CHEMICAL COMMUNICATIONS   ( 17 )   1637 - 1638   1997.9

Reaction of 2,4-di-t-butyl-6-methylphenylphosphonous dichloride with chloroform in the presence of lithium diisopropylamide

M Yoshifuji, S Ito, K Toyota, M Yasunami

HETEROATOM CHEMISTRY   7 ( 1 )   23 - 27   1996

Reaction of 2,4-Di-t-butyl-6-methylphenylphosphonous Dichloride with Chloroform in the Presence of Lithium Diisopropylamide

Heteroatom Chemistry   7 ( 1 )   23 - 27   1996

PREPARATION AND STRUCTURE OF 2,3-DICHLORO-1,4-BIS(2,4,6-TRI-T-BUTYLPHENYL)-1,4-DIPHOSPHA-1,3-BUTADIENE

S ITO, K TOYOTA, M YOSHIFUJI

CHEMISTRY LETTERS   ( 8 )   747 - 748   1995.8

Preparation and Structure of 2,3-Dichloro-1,4-bis(2,4,6-tri-t-butylphenyl)-1,4-diphospha-1,3-butadiene

Chemistry Letters   ( 8 )   747 - 748   1995

PREPARATION OF SOME MULTIFUNCTIONALIZED METHYLENEPHOSPHINES BY REACTIONS OF CHLORO[(2,4,6-TRI-T-BUTYLPHENYL)PHOSPHINIDENE]METHYLLITHIUMS WITH CARBONYL-COMPOUNDS

M YOSHIFUJI, S ITO, K TOYOTA, M YASUNAMI

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   68 ( 4 )   1206 - 1212   1995

配位感応型キラリティの効率的制御に基づく低配位ホスフィン錯体の高性能触媒化

2015 - 2016

文部科学省  科学研究費補助金 新学術領域研究 

伊藤 繁和

局在型ビラジカルの高密度配列化による低電圧駆動有機半導体の創製

2013 - 2015

日本学術振興会  科学研究費補助金 基盤研究（Ｂ） 

伊藤 繁和

配位感応型キラリティを示す低配位ホスフィンの立体制御と高活性不斉触媒の開発

2013 - 2014

文部科学省  科学研究費補助金 新学術領域研究 

伊藤 繁和

対称性の低減を利用するNMR多量子ビット分子の創製と検証

2011 - 2013

日本学術振興会  科学研究費補助金 挑戦的萌芽研究 

伊藤 繁和

非平面型一重項ビラジカルユニットの集積化による特異な伝導性ナノリボンの創製

2010 - 2012

日本学術振興会  科学研究費補助金 基盤研究（Ｂ） 

伊藤 繁和

マルチ化された一重項ビラジカルの合成と構造・物性解析

2008 - 2009

日本学術振興会  科学研究費補助金 若手研究（Ｂ） 

伊藤 繁和

核磁気共鳴量子コンピューティングに適した31P核多キュービット分子のデザインと合成

2007

カシオ科学振興財団  研究助成 

伊藤 繁和

Synthesis, Properties, and Application of Extremely Stable Organic Radicals

2005

Design and Synthesis of the NMR Qubit Molecules

2005

Novel Organic Synthesis based on Unique Catalysts

2004

Synthesis, Isolation, and Structures of Multiple Bonded Compounds Containing Heavier Main-Group Elements

Grant number：13304049  2001 - 2004

Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)

YOSHIFUJI Masaaki, ITO Shigekazu