Convenient Processes for the Synthesis of Aromatic Ketones from Aryl Bromides and Carboxylic Anhydrides Using a Cobalt Catalysis
作者:Igor Kazmierski、Mylène Bastienne、Corinne Gosmini、Jean-Marc Paris、Jacques Périchon
DOI:10.1021/jo0352169
日期:2004.2.1
various para- and meta-substituted aromatic bromides, mostly bearing sensitive moieties, with several carboxylic acid anhydrides is reported. This reaction can be carried out in two steps, by forming an aromatic organozinc reagent via cobalt catalysis in the first step, or even more interestingly in a single step, also by using a cobalt-based catalyst. The aromatic ketones are obtained by these new, mild
据报道,大多数具有敏感部分的各种对位和间位取代的芳族溴化物与几种羧酸酐的交叉偶联。该反应可以通过两步进行,通过在第一步中通过钴催化形成芳族有机锌试剂,或者甚至更有趣地是在一步中,也可以通过使用钴基催化剂来进行。通过这些新的,温和且方便的方法,与起始的芳基溴化物相比,芳族酮的收率为30-79%。还公开了结果,表明钴物种在有机锌试剂与亲电试剂的偶联中所起的作用可能与更常见的过渡金属配合物相似。