Direct Transformation of Ethylarenes into Primary Aromatic Amides with <i>N</i>-Bromosuccinimide and I<sub>2</sub>–Aqueous NH<sub>3</sub>
作者:Shohei Shimokawa、Yuhsuke Kawagoe、Katsuhiko Moriyama、Hideo Togo
DOI:10.1021/acs.orglett.6b00048
日期:2016.2.19
α-bromomethyl ketones and/or aryl methyl ketones were formed at the first reaction step and their iodoform-type reaction occurred at the second reaction step to provide primary aromatic amides. The present reaction is a useful and practical transition-metal-free method for the preparation of primary aromatic amides from ethylarenes.
通过在乙酸乙酯和水,乙腈和水的混合物中催化量的2,2'-偶氮二(异丁腈)存在下用N-溴琥珀酰亚胺处理,将各种乙基芳烃高收率转化为相应的伯芳族酰胺。,或氯仿和水,然后在一个锅中与分子碘和NH 3水溶液反应。发现在第一反应步骤中形成芳基α-溴甲基酮和/或芳基甲基酮,并且在第二反应步骤中发生它们的碘仿型反应以提供伯芳族酰胺。本反应是用于从乙基芳烃制备伯芳族酰胺的有用且实用的无过渡金属的方法。