Assembly of indole-2-carboxylic acid esters through a ligand-free copper-catalysed cascade process
作者:Qian Cai、Zhengqiu Li、Jiajia Wei、Chengyong Ha、Duanqing Pei、Ke Ding
DOI:10.1039/b918345k
日期:——
A straightforward synthesis of indole-2-carboxylic esters was developed through a ligand-free copper-catalysed condensation/coupling/deformylation cascade process from 2-halo aryl aldehydes or ketones with ethyl isocyanoacetate. The reactions proceeded well for most of the 2-iodo-, bromo-, and chloro-substrates under room temperature or mild conditions.
通过无配体的铜催化的2-卤代芳基醛或酮与异氰基乙酸乙酯的合成,开发了吲哚-2-羧酸酯的直接合成方法。在室温或温和条件下,大多数2-碘,溴和氯底物的反应进展顺利。