Enantioselective Catalysts for the Synthesis of α-Substituted Allylboronates-An Accelerated Approach towards Isomerically Pure Homoallylic Alcohols
作者:Marcus Brauns、Frédéric Muller、Daniel Gülden、Dietrich Böse、Wolfgang Frey、Martin Breugst、Jörg Pietruszka
DOI:10.1002/anie.201509198
日期:2016.1.22
use of a convenient protecting group for boronates allows a selective, catalyzed SN2′ reaction to generate allylboronates which are applied for the synthesis of enantiomerically pure homoallylic alcohols. Depending on the configuration of both catalyst and the protecting group any of the four possible stereoisomers can be formed. The rationale behind the selective addition is supported by density functional
对硼酸酯使用方便的保护基可以选择性地催化S N 2'反应生成烯丙基硼酸酯,该烯丙基硼酸酯可用于合成对映体纯的均烯丙基醇。取决于催化剂和保护基的构型,可以形成四种可能的立体异构体中的任何一种。选择性加法背后的基本原理得到密度泛函理论计算的支持。