Enzymatic desymmetrisation of (2-hydroxymethyl-oxiranyl)-methanol in organic solvents
摘要:
The desymmetrisation of (2-hydroxymethyl-oxiranyl)-methanol has been achieved in excellent enantiomeric excess in organic solvents, to access (S)-(+)-(2-(hydroxymethyl)oxiran-2-yl)methyl acetate, for the first time. This work provides a complementary method to the desymmetrisation of the Corresponding diacetate in aqueous buffer which yields the (R)-enantiomer and, as such, this new method should enable sequential chemical reactions to be carried out without the need for isolation of the chiral product. (C) 2008 Elsevier Ltd, All rights reserved.
Highlyefficient, direct, and enantioselectivesynthesis of useful chiral building blocks with excellent ee was performed by the catalytic asymmetric acylation of meso-1,3-propanediols. A structurally most simple meso-1,3-propanediol, 2-methyl-1,3-propanediol, was asymmetrized in 96% ee catalyzed by 0.5 mol% of chiral 1,2-diamine.
通过内消旋 1,3-丙二醇的催化不对称酰化,高效、直接和对映选择性合成具有优异 ee 的有用手性结构单元。结构上最简单的内消旋-1,3-丙二醇,即 2-甲基-1,3-丙二醇,在 0.5 mol% 的手性 1,2-二胺催化下,其 ee 不对称化率为 96%。
Enzymatic desymmetrisation of (2-hydroxymethyl-oxiranyl)-methanol in organic solvents
作者:Andrea March Cortijos、Timothy J. Snape
DOI:10.1016/j.tetasy.2008.07.025
日期:2008.8
The desymmetrisation of (2-hydroxymethyl-oxiranyl)-methanol has been achieved in excellent enantiomeric excess in organic solvents, to access (S)-(+)-(2-(hydroxymethyl)oxiran-2-yl)methyl acetate, for the first time. This work provides a complementary method to the desymmetrisation of the Corresponding diacetate in aqueous buffer which yields the (R)-enantiomer and, as such, this new method should enable sequential chemical reactions to be carried out without the need for isolation of the chiral product. (C) 2008 Elsevier Ltd, All rights reserved.