Zobrazeno 1 - 5
of 5
pro vyhledávání: '"Kiyoshi Inoguchi"'
Publikováno v:
Chemical and Pharmaceutical Bulletin. 40:2921-2926
A new chiral 1, 3-bisphosphine, (1R, 2R)-1-diphenylphosphino-2-(diphenylphosphinomethyl)cyclopentane, which was designed to form the favorable skew conformation of the six-membered chelate with rhodium, was developed. Its rhodium complex was found to
Publikováno v:
Chemical and Pharmaceutical Bulletin. 40:224-226
The N-substituent effect on the enantioselectivity and the catalytic activity of the rhodium complexes of pyrrolidinebisphosphine ligands, PPMs and CPMs, was examined by means of hydrogenation studies and 31P-nuclear magnetic resonance spectral analy
Publikováno v:
Chemical and Pharmaceutical Bulletin. 40:1072-1074
Using our chiral atropisomeric bisphosphines ruthenium(II) complexes, asymmetric hydrogenations of tiglic acid and its isomer were carried out. A possible enantioselective mechanism was considered on the basis of their different results on hydrogenat
Autor:
Masakazu Aburatani, Takeshi Tachinami, Kazuo Achiwa, Shigeki Hosokawa, Hideo Takeda, Kiyoshi Inoguchi
Publikováno v:
Chemical and Pharmaceutical Bulletin. 39:2706-2708
(S)-(-)-2-Methyl succinamic acid, which is a good precursor of (S)-(-)-3-methyl-γ-butyrolactone, can be prepared by homogeneous asymmetric hydrogenation of 2-methylene succinamic acid catalyzed by (2S, 4S)-N-substituted-4-(diphenylphosphino)-2-[(dip
Autor:
Kiyoshi Inoguchi, Kazuo Achiwa
Publikováno v:
Chemical and Pharmaceutical Bulletin. 38:818-820
Modified Degphoses ((R,R)-MOD-, XYL-Degphos) have been prepared and catalytic asymmetric hydrogenation of (Z)-2-acetamidocinnamic acid was carried out with their rhodium(I) cationic complexes. The catalytic activities of the modified Degphoses were e