作者:Vivek Rauniyar、Huimin Zhai、Dennis G. Hall
DOI:10.1080/00397910802245762
日期:2008.10.28
Abstract A practical method for the preparation of cycloalkenyl boronic acid pinacol esters is described. These important synthetic intermediates are typically made using more expensive methods like transition metal-catalyzed borylation of alkenyl halides or triflates. In this work, they are obtained from the simple corresponding cycloalkanones, which are subjected to Shapiro reaction conditions followed
摘要 描述了一种制备环烯基硼酸频哪醇酯的实用方法。这些重要的合成中间体通常使用更昂贵的方法制备,例如过渡金属催化的烯基卤化物或三氟甲磺酸酯的硼化。在这项工作中,它们是从简单的相应环烷酮中获得的,这些环烷酮经过夏皮罗反应条件,然后用硼酸酯捕获。以非常好的到极好的收率获得了必需的产物,并且反应可以放大到数克的量。通过为使用昂贵的过渡金属催化剂和形成敏感中间体的常用方法提供简单的替代方法,