Dynamic kinetic asymmetric transformation of 1,4-diols and the preparation of trans-2,5-disubstituted pyrrolidines
作者:Linnéa Borén、Karin Leijondahl、Jan-E. Bäckvall
DOI:10.1016/j.tetlet.2009.02.079
日期:2009.7
Dynamic kinetic asymmetric transformation (DYKAT) of a series of 1,4-diols is carried out with Candida antarctica lipase B (CALB), Pseudomonas cepacia lipase II (PS-C II), and a ruthenium catalyst. A β-chloro-substituted 1,4-diol is successfully transformed into an optically pure 1,4-diacetate, which is a highly useful synthetic intermediate. The usefulness of the optically pure 1,4-diacetates is demonstrated
用南极假丝酵母脂肪酶B(CALB),洋葱假单胞菌脂肪酶II(PS-C II)和钌催化剂进行一系列1,4-二醇的动态动力学不对称转化(DYKAT)。β-氯取代的1,4-二醇成功转化为光学纯的1,4-二乙酸酯,这是一种非常有用的合成中间体。光学纯的1,4-二乙酸酯的有用性通过对映体纯的2,5-二取代的吡咯烷的合成证明。