Gold-Catalyzed Cycloaromatization of 2,4-Dien-6-yne Carboxylic Acids: Synthesis of 2,3-Disubstituted Phenols and Unsymmetrical Bi- and Terphenyls
作者:Patricia García-García、Manuel A. Fernández-Rodríguez、Enrique Aguilar
DOI:10.1002/anie.200901269
日期:2009.7.13
Round numbers: A gold‐catalyzed 2,7‐cycloaromatization of captodative dienyne carboxylic acids has been developed that occurs at room temperature with low catalyst loading and total regioselective control (see scheme). The reaction is totally dependent on the electronic properties of the dienyne acid: if a strong electron‐donating group is not directly linked to the triple bond, a 1,6‐cyclization/decarboxylation
四舍五入数字:已开发出一种金催化的capddative dienyne羧酸的2,7-环芳香化反应,该反应在室温下以低催化剂负载和完全区域选择性控制进行(见方案)。该反应完全取决于二烯炔酸的电子性质:如果强供电子基团未直接与三键连接,则会发生1,6-环化/脱羧序列。