Allylation and Crotylation of Ketones and Aldehydes Using Potassium Organotrifluoroborate Salts under Lewis Acid and Montmorillonite K10 Catalyzed Conditions
作者:Farhad Nowrouzi、Avinash N. Thadani、Robert A. Batey
DOI:10.1021/ol900599q
日期:2009.6.18
Two convenient highly diastereoselective protocols for the allylation and crotylation of ketones using practical, air- and water-stable potassium allyl and crotyltrifluoroborate salts have been developed. BF3·OEt2 and montmorillonite clay are used as catalysts to promote additions. The montmorillonite-catalyzed method in particular is very robust, providing a straightforward and scalable method for
已经开发了两种方便的高度非对映选择性方案,用于使用实用的,对空气和水稳定的烯丙基钾盐和巴豆基三氟硼酸盐进行烯丙基化和丁酰化。BF 3 ·OEt 2和蒙脱土用作促进添加的催化剂。蒙脱石催化的方法尤其非常健壮,它为多种酮和醛的烯丙基化和丁烯酰化提供了一种简单易行的方法。