Cyanide-Free and Broadly Applicable Enantioselective Synthetic Platform for Chiral Nitriles through a Biocatalytic Approach
作者:Tobias Betke、Philipp Rommelmann、Keiko Oike、Yasuhisa Asano、Harald Gröger
DOI:10.1002/anie.201702952
日期:2017.9.25
A cyanide‐free platform technology for the synthesis of chiral nitriles by biocatalytic enantioselective dehydration of a wide range of aldoximes is reported. The nitriles were obtained with high enantiomeric excess of >90 % ee (and up to 99 % ee) in many cases, and a “privileged substrate structure” with respect to high enantioselectivity was identified. Furthermore, a surprising phenomenon was observed
报道了通过多种醛糖肟的生物催化对映选择性脱水合成手性腈的无氰化平台技术。具有高对映体过量> 90%的得到的腈EE(和高达99%ee值)在许多情况下,和“特权基板结构”相对于高对映选择性鉴定。此外,观察到令人惊讶的对映体特异性现象,通常在酶催化中没有观察到。取决于是否使用 外消旋醛肟肟底物的E或Z异构体,优选用相同的酶形成相应腈的一种或另一种对映体。