-:University of Tokyo

1991

-:東京大学 助手

1984

-:University of Tokyo

1984

「タングステン」

有機金属反応剤ハンドブック（化学同人）  2003 

W(CO)5(L)-Catalyzed Construction of Cyclic Carbon Frameworks

Journal of the Synthetic Organic Chemistry, Japan  2002 

W(CO)5(L)-Catalyzed Construction of Cyclic Carbon Frameworks

Journal of the Synthetic Organic Chemistry, Japan  2002 

Transition Metal Promoted Ring Expansion of Alkynyl- and Propadienylcyclopropanes

Topics in Current Chemistry  2000 

Transition Metal Promoted Ring Expansion of Alkynyl- and Propadienylcyclopropanes

Topics in Current Chemistry  2000 

Cobalt Carbonyl Induced Transformations of Alkynyl- and Propadienyl-cyclopropanes

Synlett  1999 

Cobalt Carbonyl Induced Transformations of Alkynyl- and Propadienyl-cyclopropanes

Synlett  1999 

Chelation-assisted electrocyclic reactions of 3-alkenyl-2,2 '-bipyridines: an efficient method for the synthesis of 5,6-dihydro-1,10-phenanthroline and 1,10-phenanthroline derivatives

Akihiko Takahashi, Yuko Hirose, Hiroyuki Kusama, Nobuharu Iwasawa

CHEMICAL COMMUNICATIONS   ( 5 )   609 - 611   2008

Platinum (II)-catalyzed reaction of gamma,delta-ynones with alkenes for the construction of 8-oxabicyclo[3.2.1]octane skeletons: Generation of platinum-containing carbonyl ylides from acyclic precursors

Hiroyuki Kusama, Kento Ishida, Hideaki Funami, Nobttharu Iwasawa

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   47 ( 26 )   4903 - 4905   2008

New Route to N-fused Tricyclic Indoles via Tandem [1,2]-Stevens Rearrangement/1,2-Alkyl Migration of Metal-Containing Ammonium Ylide

Jun Takaya, Shuji Udagawa, Hiroyuki Kusama, Nobuharu Iwasawa

Angew. Chem. Int. Ed.   47 ( 26 )   4906 - 4909   2008

Synthesis of naphthalene derivatives through platinum(II)-catalyzed reaction of 2-alkynylbenzoates with vinyl ethers

Hiroyuki Kusama, Hideaki Funami, Nobuharu Iwasawa

SYNTHESIS-STUTTGART   Vol. ( 13 )   2014 - 2024   2007.7

Boronic esters as a system for crystallization-induced dynamic self-assembly equipped with an "on-off" switch for equilibration

Nobuharu Iwasawa, Hiroki Takahagi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   129 ( 25 )   7754 - +   2007.6

Boronic esters as a system for crystallization-induced dynamic self-assembly equipped with an "on-off" switch for equilibration

Nobuharu Iwasawa, Hiroki Takahagi

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   129 ( 25 )   7754 - +   2007.6

Intermolecular addition reaction to alkenes of acylmolybdenum complexes generated by oxidative addition of aryl or alkenyl halides with molybdenum(0) carbonyl complexes

Kenichiro Sangu, Toru Watanabe, Jun Takaya, Nobuharu Iwasawa

SYNLETT   Vol. ( 6 )   929 - 933   2007.4

Ni(0)-promoted hydroxycarboxylation of 1,2-dienes by reaction with CO2 and O-2

Masao Aoki, Sawa Izumi, Motomu Kaneko, Kazutoshi Ukai, Jun Takaya, Nobuharu Iwasawa

ORGANIC LETTERS   9 ( 7 )   1251 - 1253   2007.3

W(CO)(5)(L)-catalyzed cyclization of omega-acetylenic silyl enol ethers for the preparation of nitrogen-containing cyclic compounds

Antoine Grandmarre, Hiroyuki Kusama, Nobuharu Iwasawa

CHEMISTRY LETTERS   36 ( 1 )   66 - 67   2007.1

W(CO)(5)(L)-catalyzed 6-endo-selective cyclization and formal Cope rearrangement of allenyl silyl enol ethers

Tomoya Miura, Koichi Kiyota, Hiroyuki Kusama, Nobuharu Iwasawa

JOURNAL OF ORGANOMETALLIC CHEMISTRY   692 ( 1-3 )   562 - 568   2007.1

W(CO)(5)(L)-catalyzed cyclization of omega-acetylenic silyl enol ethers for the preparation of nitrogen-containing cyclic compounds

Antoine Grandmarre, Hiroyuki Kusama, Nobuharu Iwasawa

CHEMISTRY LETTERS   36 ( 1 )   66 - 67   2007.1

Stereoselective Synthesis of Medium-sized Cyclic Compounds through the Intramolecular Michael-type Reaction Utilizing Alkyne-Hexacarbonyldicobalt Complex Formation

Kennichi Inaba, Jun Takaya, Nobuharu Iwasawa

Chem. Lett.   36 ( 3 )   474 - 475   2007

Preparation of Substituted Cyclopentadienes through Platinum(II)-Catalyzed Cyclization of 1,2,4-Trienes: the Presence of Platinum-Carbene Complex Intermediate

Hideaki Funami, Hiroyuki Kusama, Nobuharu Iwasawa

Angew. Chem. Int. Ed.   46 ( 6 )   909 - 911   2007

Stereoselective Synthesis of Medium-sized Cyclic Compounds through the Intramolecular Michael-type Reaction Utilizing Alkyne-Hexacarbonyldicobalt Complex Formation

Kennichi Inaba, Jun Takaya, Nobuharu Iwasawa

Chem. Lett.   36 ( 3 )   474 - 475   2007

Preparation of Substituted Cyclopentadienes through Platinum(II)-Catalyzed Cyclization of 1,2,4-Trienes: the Presence of Platinum-Carbene Complex Intermediate

Hideaki Funami, Hiroyuki Kusama, Nobuharu Iwasawa

Angew. Chem. Int. Ed.   46 ( 6 )   909 - 911   2007

W(CO)(5)(L)-catalyzed tandem intramolecular cyclopropanation/cope rearrangement for the stereoselective construction of bicyclo[5.3.0]decane framework

Hiroyuki Kusama, Yuji Onizawa, Nobuharu Iwasawa

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   128 ( 51 )   16500 - 16501   2006.12

Cycloaddition reactions of transition metal-containing benzopyrylium and related zwitterionic intermediates

Hiroyuki Kusama, Nobuharu Iwasawa

Chemistry Letters   35 ( 10 )   1082 - 1087   2006.10

Rhodium(I)-catalyzed carboxylation of aryl- and alkenylboronic esters with CO2

Kazutoshi Ukai, Masao Aoki, Jun Takaya, Nobuharu Iwasawa

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   128 ( 27 )   8706 - 8707   2006.7

Synthesis of isochromene esters utilizing 1,6-addition of nucleophiles to benzopyranylidenetungsten(0) complexes

H Kusama, T Sawada, A Okita, F Shiozawa, N Iwasawa

ORGANIC LETTERS   8 ( 6 )   1077 - 1079   2006.3

Intermolecular 1,5-dipolar cycloaddition reaction of tungsten-containing vinylazomethine ylides leading to seven-membered heterocycles

H Kusama, Y Suzuki, J Takaya, N Iwasawa

ORGANIC LETTERS   8 ( 5 )   895 - 897   2006.3

Pt(II)- or Au(III)-catalyzed [3+2] cycloaddition of metal-containing azomethine ylides: Highly efficient synthesis of the mitosene skeleton

H Kusama, Y Miyashita, J Takaya, N Iwasawa

ORGANIC LETTERS   8 ( 2 )   289 - 292   2006.1

Pt(II)- or Au(III)-Catalyzed [3+2] Cycloaddition of Metal-Containing Azomethine Ylides Derived from N-(o-Alkynyl)imines Bearing an Internal Alkyne Moiety: Highly Efficient Synthesis of Mitosene Skeleton

H. Kusama, Y. Miyashita J, Takaya, N. Iwasawa

Org. Lett.   8 ( 2 )   289 - 292   2006

Intermolecular 1,5-Dipolar Cycloaddition Reaction of Tungsten-Containing Vinyl-azomethine Ylides Leading to Seven-Membered Heterocycles

H. Kusama, Y. Suzuki J, Takaya, N. Iwasawa

Org. Lett.   8 ( 5 )   895 - 897   2006

Useful reactions of silylated propargyltungsten or propargylmolybdenum species

Toshimichi Asakura, Takuto Kojima, Tomoya Miura, Nobuharu Iwasawa

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   45 ( 41 )   6874 - 6877   2006

Cycloaddition Reactions of Transition Metal-containing Benzopyrylium and Related Zwitterionic Intermediates

H. Kusama, N. Iwasawa

Chem. Lett.   35 ( 10 )   1082 - 1087   2006

W(CO)(5)(L)-catalyzed formal cope rearrangement of allenyl silyl enol ethers

T Miura, K Kiyota, H Kusama, N Iwasawa

ORGANIC LETTERS   7 ( 8 )   1445 - 1447   2005.4

Generation and reaction of tungsten-containing carbonyl ylides: [3+2]-cycloaddition reaction with electron-rich alkenes

H Kusama, H Funami, M Shido, Y Hara, J Takaya, N Iwasawa

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   127 ( 8 )   2709 - 2716   2005.3

Generation and reaction of tungsten-containing carbonyl ylides: [3+2]-cycloaddition reaction with electron-rich alkenes

H Kusama, H Funami, M Shido, Y Hara, J Takaya, N Iwasawa

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   127 ( 8 )   2709 - 2716   2005.3

Rh(I)-catalyzed cyclization of 1-arylprop-2-yn-1-ol derivatives utilizing rhodium 1,4-migration

H Yamabe, A Mizuno, H Kusama, N Iwasawa

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   127 ( 10 )   3248 - 3249   2005.3

Rhenium(I)-catalyzed intramolecular geminal carbofunctionalization of alkynes: Tandem cyclization of omega-acetylenic dienol silyl ethers

H Kusama, H Yamabe, Y Onizawa, T Hoshino, N Iwasawa

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   44 ( 3 )   468 - 470   2005

Complexation-initiated intramolemlar [4+2] cycloaddition: Construction of bridged-type cycloadducts

N Iwasawa, K Inaba, S Nakayama, M Aoki

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   44 ( 45 )   7447 - 7450   2005

Platinum(II)-Catalyzed Reaction of 2-Alkynylbenzoates or Benzothioates with Vinyl Ethers: A Concise Method for Synthesis of 1-Acyl-4-alkoxy- or 1-Acyl-4-alkylsulfanylnaphthalene Derivatives

Hiroyuki Kusama, Hideaki Funami, Jun Takaya, Nobuharu Iwasawa

Organic Letters   6 ( 4 )   605 - 608   2004.2

Platinum(II)-catalyzed reaction of 2-alkynylbenzoates or benzothioates with vinyl ethers: A concise method for synthesis of 1-acyl-4-alkoxy- or 1-acyl-4-alkylsuifanylnaphthalene derivatives

H Kusama, H Funami, J Takaya, N Iwasawa

ORGANIC LETTERS   6 ( 4 )   605 - 608   2004.2

Isolation and reaction of (indolin-3-ylidene)pentacarbonyltungsten generated from tungsten-containing azomethine ylide

Jun Takaya, Hiroyuki Kusama, Nobuharu Iwasawa

Chemistry Letters   33 ( 1 )   16 - 17   2004.1

W(CO)5(L)-Promoted Cyclization of 1-Iodo-1-alkynes via Iodovinylidene Tungsten Complexe

T. Miura, H. Murata, K. Kiyota, H. Kusama, N. Iwasawa

Journal of Molecular catalysis A   213 ( 1 )   59 - 71   2004

Isolation and Reaction of (Indolin-3-ylidene)pentacarbonyltungsten Generated from Tungsten-Containing Azomethine Ylide

J. Takaya, H, Kusama, N. Iwasawa

Chemistry Letters   33 ( 1 )   16 - 17   2004

Bidentate amidine ligands for nickel(0)-mediated coupling of carbon dioxide with unsaturated hydrocarbons

M Aoki, M Kaneko, S Izumi, K Ukai, N Iwasawa

CHEMICAL COMMUNICATIONS   ( 22 )   2568 - 2569   2004

W(CO)5(L)-Promoted Cyclization of 1-Iodo-1-alkynes via Iodovinylidene Tungsten Complexe

T. Miura, H. Murata, K. Kiyota, H. Kusama, N. Iwasawa

Journal of Molecular catalysis A   213 ( 1 )   59 - 71   2004

W(CO)(5)(L)-catalyzed endo-cyclization of allenyl silyl enol ethers: An efficient method for the cyclopentene annulation onto alpha,beta-unsaturated ketones

T Miura, K Kiyota, H Kusama, K Lee, H Kim, S Kim, PH Lee, N Iwasawa

ORGANIC LETTERS   5 ( 10 )   1725 - 1728   2003.5

Generation of Reactive Species by One-Electron Reduction of Fischer-Type Carbene Complexes of Group 6 Metals and Their Use for Carbon-Carbon Bond Formations

K. Fuchibe, N. Iwasawa

Chemistry: A European Journal   9 ( 4 )   905 - 914   2003

Indium-Mediated b-Allylation, b-Propargylation, and b-Allenylation onto a,b-Unsaturated Ketones: Reactions of in-Situ-Generated 3-tert-Butyldimethylsillyloxyalk-2-enylsulfonium Salts with in-Situ-Generated Organoindium Reagents

K. Lee, H. Kim, T. Miura, K. Kiyota, H. Kusama, S. Kim, N.Iwasawa, P, H. Lee

Journal of the American Chemical Society   125 ( 32 )   9682 - 9688   2003

Generation of Reactive Species by One-Electron Reduction of Fischer-Type Carbene Complexes of Group 6 Metals and Their Use for Carbon-Carbon Bond Formations

K. Fuchibe, N. Iwasawa

Chemistry: A European Journal   9 ( 4 )   905 - 914   2003

Indium-Mediated b-Allylation, b-Propargylation, and b-Allenylation onto a,b-Unsaturated Ketones: Reactions of in-Situ-Generated 3-tert-Butyldimethylsillyloxyalk-2-enylsulfonium Salts with in-Situ-Generated Organoindium Reagents

K. Lee, H. Kim, T. Miura, K. Kiyota, H. Kusama, S. Kim, N.Iwasawa, P, H. Lee

Journal of the American Chemical Society   125 ( 32 )   9682 - 9688   2003

An efficient method for cyclopentene annulation onto alpha,beta-unsaturated ketones: W(CO)(5)(L))-catalyzed 5-endo-dig cyclization of 6-siloxy-5-en-1-ynes

N Iwasawa, T Miura, K Kiyota, H Kusama, K Lee, PH Lee

ORGANIC LETTERS   4 ( 25 )   4463 - 4466   2002.12

A facile method for the synthesis of polycyclic indole derivatives: The generation and reaction of tungsten-containing azomethine ylides

H Kusama, J Takaya, N Iwasawa

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   124 ( 39 )   11592 - 11593   2002.10

W(CO)(5)-amine catalyzed exo- and endo-selective cyclizations of omega-alkynyl silyl enol ethers: A highly useful method for the construction of polycyclic compounds

H Kusama, H Yamabe, N Iwasawa

ORGANIC LETTERS   4 ( 15 )   2569 - 2571   2002.7

Reactions of iodinated vinylidene complexes generated from 1-Iodo-1-alkynes and W(CO)5(thf)

Tomoya Miura, Nobuharu Iwasawa

Journal of the American Chemical Society   124 ( 4 )   518 - 519   2002.1

Reactions of iodinated vinylidene complexes generated from 1-iodo-1-alkynes and W(CO)(5)(thf)

T Miura, N Iwasawa

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   124 ( 4 )   518 - 519   2002.1

A Facile Method for the Synthesis of Polycyclic Indole Derivatives: The Generation and Reaction of Tungsten-Containing Azomethine Ylides

H. Kusama, J. Takaya, N. Iwasawa

Journal of the American Chemical Society   124 ( 39 )   11592 - 11593   2002

Generation and reaction of metal-containing carbonyl ylides: Tandem [3+2]-cycloaddition-carbene insertion leading to novel polycyclic compounds

N Iwasawa, M Shido, H Kusama

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   123 ( 24 )   5814 - 5815   2001.6

Reactions of silyl-substituted Fischer-type carbene complexes with silanes

N Iwasawa, M Saitou, H Kusama

JOURNAL OF ORGANOMETALLIC CHEMISTRY   617 ( 1 )   741 - 743   2001.1

A Novel Reaction for Annulation onto a,b-Unsaturated Ketones : W(CO)5･L Promoted Exo and Endo Selective Cyclizations of w-Acetylenic Silyl Enol Ethers Prepared by 1,4-Addition of Propargyl Malonate to Enones

N. Iwasawa, K. Maeyama, H. Kusama

Organic Letters   3 ( 24 )   3871 - 3873   2001

A Novel Reaction for Annulation onto a,b-Unsaturated Ketones : W(CO)5･L Promoted Exo and Endo Selective Cyclizations of w-Acetylenic Silyl Enol Ethers Prepared by 1,4-Addition of Propargyl Malonate to Enones

N. Iwasawa, K. Maeyama, H. Kusama

Organic Letters   3 ( 24 )   3871 - 3873   2001

Novel synthesis of pentacarbonylbenzopyranylidenetungsten(0) complexes and their Diels-Alder reaction with electron-rich alkenes

N Iwasawa, M Shido, K Maeyama, H Kusama

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   122 ( 41 )   10226 - 10227   2000.10

Reactions of novel reactive species generated by samarium(II)-mediated one-electron reduction of Fischer-type carbene complexes

K Fuchibe, N Iwasawa

ORGANIC LETTERS   2 ( 21 )   3297 - 3299   2000.10

A novel use of the anions of Fischer-type carbene complexes as alkenyl metallic species

K Fuchibe, N Iwasawa

TETRAHEDRON   56 ( 28 )   4907 - 4915   2000.7

Complexation-initiated intramolecular Diels-Alder reaction

N Iwasawa, F Sakurada, M Iwamoto

ORGANIC LETTERS   2 ( 6 )   871 - 873   2000.3

A novel synthesis of 4,5-cidehydrotropone-Co-2(CO)(4)center dot dppm complexes

N Iwasawa, H Satoh

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   121 ( 34 )   7951 - 7952   1999.9

A novel synthesis of 4,5-cidehydrotropone-Co-2(CO)(4)center dot dppm complexes

N Iwasawa, H Satoh

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   121 ( 34 )   7951 - 7952   1999.9

W(CO)(5)center dot THF-catalyzed electrocyclizations of aromatic enynes via vinylidene intermediates

K Maeyama, N Iwasawa

JOURNAL OF ORGANIC CHEMISTRY   64 ( 4 )   1344 - 1346   1999.2

W(CO)(5)center dot THF-catalyzed electrocyclizations of aromatic enynes via vinylidene intermediates

K Maeyama, N Iwasawa

JOURNAL OF ORGANIC CHEMISTRY   64 ( 4 )   1344 - 1346   1999.2

Synthesis of medium-sized bicyclic compounds by intramolecular cyclization of cyclic beta-keto radicals generated from cyclopropanols using manganese(III) tris(pyridine-2-carboxylate) and its application to total synthesis of 10-isothiocyanatoguaia-6-ene

N Iwasawa, M Funahashi, S Hayakawa, T Ikeno, K Narasaka

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   72 ( 1 )   85 - 97   1999.1

Rearrangement of 1-(1-alkynyl)cyclopropanols to 2-cyclopentenones via their hexacarbonyldicobalt complexes. A new use of alkyne-Co-2(CO)(6) complexes in organic synthesis

N Iwasawa, T Matsuo, M Iwamoto, T Ikeno

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   120 ( 16 )   3903 - 3914   1998.4

W(CO)5･THF-Catalyzed Endo Selective Cyclization of w-Acetylenic Silyl Enol Ethers

K. Maeyama, N. Iwasawa

Journal of the American Chemical Society   120 ( 8 )   1928 - 1929   1998

W(CO)5･THF-Catalyzed Endo Selective Cyclization of w-Acetylenic Silyl Enol Ethers

K. Maeyama, N. Iwasawa

Journal of the American Chemical Society   120 ( 8 )   1928 - 1929   1998

Generation of Propargyl Metallic Species by the Addition Reactions of Alkynyllithiums to Fischer-type Carbene Complexes

N. Iwasawa, K. Maeyama, M. Saitou

Journal of the American Chemical Society   119   1486   1997

Generation of Propargyl Metallic Species by the Addition Reactions of Alkynyllithiums to Fischer-type Carbene Complexes

N. Iwasawa, K. Maeyama, M. Saitou

Journal of the American Chemical Society   119   1486   1997