Kinetic resolution of racemic halohydrins, precursors of optically active di- and trialkyl-substituted epoxides, with lipase from Pseudomonas sp.
摘要:
Asymmetric acetylation of racemic halohydrins with vinyl acetate catalyzed by lipase from Pseudomonas sp. afforded the optically active beta-halo alcohols 1 and acetates 2 in high enantiomeric excess (68 to > 98%). The enzymatic kinetic resolution was performed on the preparative scale and the halo alcohols 1 and acetates 2 led to the optically active epoxides 3 after base treatment. (C) 1997 Elsevier Science Ltd.
Metal-catalyzed Organic Photoreactions. The Photooxidation of Olefins in the Presence of Uranyl Acetate
作者:Eigoro Murayama、Tadashi Sato
DOI:10.1246/bcsj.51.3022
日期:1978.10
was confirmed by spectroscopicstudies and isotope-incorporation experiments that (1) the stereochemistry of the hydroxyl and hydroperoxyl groups in the β-hiydroxy hydroperoxides was trans, (2) the hydroxyl group was added to the less substituted carbon of the double bond, and (3) the oxygen atom in the hydroxyl group originated mainly from the water molecule, while the oxygen atoms in the hydroperoxyl
Kinetic resolution of racemic halohydrins, precursors of optically active di- and trialkyl-substituted epoxides, with lipase from Pseudomonas sp.
作者:Waldemar Adam、Lluís Blancafort、Chantu R. Saha-Möller
DOI:10.1016/s0957-4166(97)00430-8
日期:1997.10
Asymmetric acetylation of racemic halohydrins with vinyl acetate catalyzed by lipase from Pseudomonas sp. afforded the optically active beta-halo alcohols 1 and acetates 2 in high enantiomeric excess (68 to > 98%). The enzymatic kinetic resolution was performed on the preparative scale and the halo alcohols 1 and acetates 2 led to the optically active epoxides 3 after base treatment. (C) 1997 Elsevier Science Ltd.
Murayama, Eigoro; Kohda, Akira; Sato, Tadashi, Journal of the Chemical Society. Perkin transactions I, 1980, p. 947 - 949