A convenient synthesis of 2-acyl benzothiazoles/thiazoles from benzothiazole/thiazole and N,N'-carbonyldiimidazole activated carboxylic acids
作者:Tonghui Huang、Xin Wu、Yongbo Yu、Lin An、Xiaoxing Yin
DOI:10.1016/j.tetlet.2019.05.043
日期:2019.6
A convenient and efficient strategy for the synthesis of 2-acyl benzothiazoles/thiazoles has been developed. The treatment of benzothiazole/thiazole with allylic Grignard reagents readily generates the corresponding 2-Grignard reagents, which is followed by a reaction with N,N'-carbonyldiimidazole activated carboxylic acids to afford various 2-acyl benzothiazoles/thiazoles products. The synthetic method
已经开发了一种方便有效的合成2-酰基苯并噻唑/噻唑的策略。用烯丙基格利雅试剂处理苯并噻唑/噻唑容易产生相应的2-格利雅试剂,然后与N,N′-羰基二咪唑活化的羧酸反应,得到各种2-酰基苯并噻唑/噻唑产物。该合成方法适用于多种羧酸,并且在温和的反应条件下,可以很容易地获得2-酰基苯并噻唑/噻唑。