An optical resolution of pyridyl and bipyridylethanols and a facile preparation of optically pure oligopyridines
作者:Jun'ichi Uenishi、Kenji Nishiwaki、Shinichiro Hata、Kaoru Nakamura
DOI:10.1016/0040-4039(94)80025-1
日期:1994.10
A kinetic resolution of racemic pyridyl and bipyridylethanols was performed by Candida antarctica lipase with vinyl acetate in diisopropyl ether, in which (R)-alcohol was acetylated stereoselectively, and both the acetate 2 and the remaining (S)-alcohol 1 were obtained with high enantiomeric excesses. (S0-Oligopyridylethanols, 7 and 8 were prepared by a coupling reaction of (S)-1b and (S)-1e with ethyl
南极假丝酵母脂肪酶和乙酸乙烯酯在二异丙醚中进行消旋吡啶基和联吡啶乙醇的动力学拆分,其中(R)-醇被立体选择性乙酰化,乙酸酯2和剩余的(S)-醇1均获得了较高的收率。对映体过量。通过(S)-1b和(S)-1e与乙基联吡啶亚砜的偶联反应制备了(S 0-低级吡啶基乙醇,7和8。