論文 - 山本 芳彦
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Selective Synthesis of Fused Cyclooctatetraenes by [4+4] Coupling Between Two Different Diene Units 査読有り
Yoshihiko Yamamoto, Tatsuya Ohno, Kenji Itoh
Chemistry - A European Journal 8 巻 ( 20 ) 頁: 4734-4741 2002年10月
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Ruthenium(II)-Catalyzed [2+2+2] Cycloaddition of 1,6-Diynes with Tricarbonyl Compounds 査読有り
Yoshihiko Yamamoto, Hideyuki Takagishi, Kenji Itoh
Journal of the American Chemical Society 124 巻 ( 24 ) 頁: 6844-6845 2002年6月
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Ruthenium(II)-Catalyzed Cycloaddition of 1,6-Diynes with Isothiocyanates and Carbon Disulfide: First Transition-Metal Catalyzed [2+2+2] Cocyclotrimerization Involving C=S Double Bond 査読有り
Yoshihiko Yamamoto, Hideyuki Takagishi, Kenji Itoh
Journal of the American Chemical Society 124 巻 ( 1 ) 頁: 28-29 2002年1月
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Ruthenium(II)-Catalyzed Isomer-selective Cyclization of 1,6-Dienes Leading to exo-Methylenecyclopentanes. Unprecedented Cycloisomerization Mechanism Involving Ruthenacyclopentane(hydrido) Intermediate 査読有り
Yoshihiko Yamamoto, Yu-ichiro Nakagai, Naoki Ohkoshi, and Kenji Itoh
Journal of the American Chemical Society 123 巻 ( 26 ) 頁: 6372-6380 2001年7月
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Diastereoselective Inter- and Intramolecular Pinacol Coupling of Aldehydes Promoted by Monomeric Titanocene(III) Complex Cp2TiPh 査読有り
Yoshihiko Yamamoto, Reiko Hattori, Takeyuki Miwa, Yu-ichiro Nakagai, Taketeru Kubota, Chiyo Yamamoto, Yoshio Okamoto, and Kenji Itoh
The Journal of Organic Chemistry 66 巻 ( 11 ) 頁: 3865-3870 2001年6月
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Ruthenium(II)-Catalyzed Cycloaddition of 1,6-Diynes with Isocyanates Leading to Bicyclic Pyridones 査読有り
Yoshihiko Yamamoto, Hideyuki Takagishi, and Kenji Itoh
Organic Letters 3 巻 ( 13 ) 頁: 2117-2119 2001年6月
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Significant Chemo- and Regioselectivies in the Ru(II)-Catalyzed [2 + 2 + 2] Cycloaddition of 1,6-Diynes with Dicyanides 査読有り
Yoshihiko Yamamoto, Ryuji Ogawa, and Kenji Itoh
Journal of the American Chemical Society 123 巻 ( 25 ) 頁: 6189-6190 2001年6月
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Ruthenium(II)-catalyzed [2+2+2] cycloaddition of 1,6-diynes with electron-deficient nitriles 査読有り
Yoshihiko Yamamoto, Satoshi Okuda, and Kenji Itoh
Chemical Communications ( 11 ) 頁: 1102-1103 2001年6月
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The First Palladium(0) Complex of a Linear 1,6,11-Triyne. A Reactive Intermediate in the Catalytic Cyclotrimerization of a Triyne 査読有り
Yoshihiko Yamamoto, Asako Nagata, Yasuhiro Arikawa, Kazuyuki Tatsumi, and Kenji Itoh
Organometallics 19 巻 ( 13 ) 頁: 2403-2405 2000年6月
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Ru(II)-Catalyzed Cycloadditions of 1,6-Heptadiynes with Alkenes: New Synthetic Potential of Ruthenacyclopentatrienes as Biscarbenoids in Tandem Cyclopropanation of Bicycloalkenes and Heteroatom-Assisted Cyclocotrimerization of 1,6-Heptadiynes with Heterocyclic Alkenes 査読有り
Yoshihiko Yamamoto, Hideaki Kitahara, Ryuji Ogawa, Hiroyuki Kawaguchi, Kazuyuki Tatsumi, and Kenji Itoh
Journal of the American Chemical Society 122 巻 ( 18 ) 頁: 4310-4319 2000年5月
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Highly chemo- and regio-selective [2+2+2] cycloaddition of unsymmetrical 1,6-diynes with terminal alkynes catalyzed by Cp*Ru(cod)Cl under mild conditions 査読有り
Yoshihiko Yamamoto, Ryuji Ogawa, and Kenji Itoh
Chemical Communications ( 7 ) 頁: 549-550 2000年4月
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Fully substituted cyclooctatetraenes assembled by the [4+4] cross coupling of two different diene units: a shunting strategy of Wilke's metallacyclopentadiene coupling mechanism 査読有り
Yoshihiko Yamamoto, Tatsuya Ohno, and Kenji Itoh
Chemical Communications ( 16 ) 頁: 1543-1544 1999年8月
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Pd(0)-Catalyzed Selective [2+2+2] Cycloaddition of Dimethyl Nona-2,7-diyne-1,9-dioate Derivatives with Dimethyl Acetylenedicarboxylate 査読有り
Yoshihiko Yamamoto, Asako Nagata, and Kenji Itoh
Tetrahedron Letters 40 巻 ( 27 ) 頁: 5035-5038 1999年7月
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Highly trans-selective intramolecular pinacol coupling of dials catalyzed by bulky Cp2TiPh 査読有り
Yoshihiko Yamamoto, Reiko Hattori, and Kenji Itoh
Chemical Communications ( 9 ) 頁: 825-826 1999年5月
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The Cp2TiPh-Mediated Reductive Radical cyclization of Cyanoketones and Related Reactions. Efficient Trapping of Ketyl Radicals by Cp2TiPh-Coordinated Polar Multiple bonds 査読有り
Yoshihiko Yamamoto, Daisuke Matsumi, Reiko Hattori, and Kenji Itoh
the Journal of Organic Chemistry 64 巻 ( 9 ) 頁: 3224-3229 1999年4月
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Ruthenium-Catalyzed Highly Efficient Intramolecular Olefin Coupling of α,ω-Dienes. Facile and Regioselective Synthesis of exo-Methylenecyclopentanes
Ruthenium-Catalyzed Highly Efficient Intramolecular Olefin Yoshihiko Yamamoto, Naoki Ohkoshi, Mitsutosi Kameda, and Kenji Itoh
the Journal of Organic Chemistry 64 巻 ( 7 ) 頁: 2178-2179 1999年4月
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Cp*Ru(cod)Cl-Catalyzed [2+2+2] Cycloaddition of 1,6-Heptadiynes with Allylic Ethers. A Decisive Role of Coordination to the Ether Oxygen Atom 査読有り
Yoshihiko Yamamoto, Hideaki Kitahara, Ryuji Ogawa, and Kenji Itoh
the Journal of Organic Chemistry 63 巻 ( 26 ) 頁: 9610-9611 1998年12月
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Ruthenium-Catalyzed Tandem [2+2+2]/[4+2] Cycloaddition of 1,6-Heptadiyne with Norbornene 査読有り
Yoshihiko Yamamoto, Hideaki Kitahara, Reiko Hattori, and Kenji Itoh
Organometallics 17 巻 ( 10 ) 頁: 1910-1912 1998年5月
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Cp2TiPh-coordinated cyano and ester groups as efficient ketyl radical acceptors in the reductive radical cyclization of γ-and δ-cyano ketones and δ-keto esters 査読有り
Yoshihiko Yamamoto, Daisuke Matsumi, and Kenji Itoh
Chemical Communications ( 8 ) 頁: 875-876 1998年4月
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Formation of 2-[1-(Trimethylsilyl)alkylidene]-4-cyclopentene-1,3-dione from Lewis Acid-Catalyzed Reaction of Cyclobutenedione Monoacetal with Alkynylsilane: Novel Cationic 1,2-Silyl Migrative Ring Opening and Subsequent 5-Exo-Trig Ring Closure 査読有り
The Journal of Organic Chemistry 62 巻 ( 5 ) 頁: 1292-1298 1997年3月