Zobrazeno 1 - 10 of 25 pro vyhledávání: '"Norio Mimura"'
1
Relative Stabilities of Some Synthetically Useful 2,3-cis-Disubstituted Aziridines and Their 2,3-Trans Isomers
Autor: Yoshinori Yamamoto, Toshiro Ibuka, Yoshihisa Miwa, Norio Mimura
Publikováno v: The Journal of Organic Chemistry. 67:5796-5801
The relative stabilities of synthetically useful 2,3-cis/trans pairs of 2,3-disubstituted aziridines were investigated theoretically by performing molecular orbital calculations at the MP2/6-31G**/RHF/6-31G** level of theory. The results showed clear
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c627c6bec86d4835d9df6dce45096f42
https://doi.org/10.1021/jo025777k
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2
Regio- and stereoselectivity in reactions of 2,3-cis- and trans-3-alkyl-2-vinylaziridines with organocopper reagents: Importance of 2,3-cis-stereochemistry in controlling selectivity
Autor: Norio Mimura, Hiroshi Aoyama, Nobutaka Fujii, Ayako Toda, Akira Otaka, Kiyonori Ishii, Hiroaki Ohno, Hirokazu Tamamura, Toshiro Ibuka
Publikováno v: Tetrahedron Letters. 38:7383-7386
By treatment with organocopper reagents, N -activated 2,3- cis -3-alkyl-2-vinylaziridines produced exclusively ( E )-allyl amines in high yields, presumably via an anti -S N 2′ reaction pathway. On the other hand, under otherwise identical conditio
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9adada1e3454d4d9be27b98a0862d5a8
https://doi.org/10.1016/s0040-4039(97)01726-7
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3
Palladium-catalyzed reductive ring opening with formic acid of aziridines bearing an α,β-unsaturated ester group
Autor: Akira Otaka, Ikuo Shimizu, Hiroaki Ohno, Hirokazu Tamamura, Yoshinori Yamamoto, Norio Mimura, Toshiro Ibuka, Akiharu Satake, Nobutaka Fujii
Publikováno v: Tetrahedron. 53:12933-12946
The palladium-catalyzed reduction of various N -arenesulfonylaziridines bearing α,β-unsaturated ester groups with formic acid and the stereochemistry of the reaction products have been investigated in detail. In all cases examined, (Z)-α,β-enoate
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::54822c4eebc3e3f0bb957bd158b886e4
https://doi.org/10.1016/s0040-4020(97)00817-x
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4
Synthesis and reactivities of a novel flavoenzyme model, 5-deazaflavin with C2-symmetry
Autor: Tooru Taga, Fumio Yoneda, Reiko Yanada, Mikako Yazaki, Kazuo Yanada, Yoshiyuki Yoneda, Norio Mimura
Publikováno v: Tetrahedron: Asymmetry. 8:2319-2323
The title model compound represents a redox property of the active site of flavoenzymes and an environmental effect of the apoproteins. Its stereostructure was elucidated by 1 H-NMR spectra and energy minimum calculations. The stereoselectivity of th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5731f079c196824e6a993c5fbb16a4f4
https://doi.org/10.1016/s0957-4166(97)00269-3
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6
A thermodynamic preference of chiral cis-γ,δ-epimino-(E)-α,β-unsaturated esters over other stereoisomers: Synthetically useful Pd(0)-catalyzed equilibrated reactions of aziridines bearing an α,β-unsaturated ester group
Autor: Toshiro Ibuka, Yoshinori Yamamoto, Hirokazu Tamamura, Norio Mimura, Nobutaka Fujii, Kazuo Nakai, Masako Akaji, Hiromu Habashita
Publikováno v: Tetrahedron Letters. 37:2849-2852
A practical synthesis of chiral N -arylsulfonyl- cis - γ , δ -epimino-( E )- α , β -enoates, key intermediates for the synthesis of ( E )-alkene dipeptide isosteres via Pd(0)-catalyzed equilibrated reactions, has been successfully achieved by exp
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df017879395720115c59ca8f0c7f7760
https://doi.org/10.1016/0040-4039(96)00403-0
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8
Simulation of vibrational spectra of isotopic benzenes by an extended molecular mechanics method
Autor: Katsunosuke Machida, Tetsuo Nakagawa, Soichi Hayashi, Norio Mimura, Junzo Umemura, Yoshihisa Miwa
Publikováno v: Spectrochimica Acta Part A: Molecular Spectroscopy. 50:1629-1645
Vibrational spectra of benzene and benzene-d6 in the gas and liquid phase have been simulated by a molecular mechanics method including the calculation of equilibrium structures, thermodynamic quantities, normal frequencies and vibrational transition
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6237fae5190a46fc82d864bd7d6a85c8
https://doi.org/10.1016/0584-8539(94)e0072-i
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9
Autorecycling system for the specific 1,4-reduction of α, β-unsaturated carbonyl compounds catalysed by 1,5-dihydro-5-deazaflavin
Autor: Tomohisa Nagamatsu, Fumio Yoneda, Kazunori Kuroda, Reiko Yanada, Norio Mimura
Publikováno v: J. Chem. Soc., Perkin Trans. 1. :1125-1128
A useful autorecycling system for the specific 1,4-reduction of α,β-unsaturated carbonyl compounds to the corresponding saturated carbonyl compounds catalysed by a 10-aryl-5-deazaflavin in formic acid is reported. The specific reduction behaviour t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2464fb4e3ed7b6f432836228e1028462
https://doi.org/10.1039/p19940001125
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