Direct Carboxylation of Thiophenes and Benzothiophenes with the Aid of EtAlCl<sub>2</sub>
作者:Koji Nemoto、Satoru Onozawa、Megumi Konno、Naoya Morohashi、Tetsutaro Hattori
DOI:10.1246/bcsj.20110335
日期:2012.3.15
Thiophenes and benzothiophenes bearing alkyl or aryl substituents at the 2- or 3-positions are successfully carboxylated with CO2 with aid of EtAlCl2 to give the corresponding 2- or 3-carboxylic acids in up to 90% yield.
含有在2位或3位具有烷基或芳基取代基的噻吩和苯并噻吩,经过乙基铝氯的辅助,成功地与二氧化碳进行羧化反应,得到相应的2位或3位羧酸,产率高达90%。