Regioselective Functionalization of 4-Methyl-1<i>H</i>-indole for Scalable Synthesis of 2-Cyano-5-formyl-4-methyl-1<i>H</i>-indole
作者:Jun Zhang、Yun Hu、Haiyu Wang、Aixin Guo、Jianshe Kong、Rujian Ma、Tao Wu、Yi Wang、Lian-Sheng Li、Wanping Mai、Pingda Ren、Xiaohu Deng
DOI:10.1021/acs.oprd.7b00370
日期:2018.1.19
We report a five-step synthesis of 2-cyano-5-formyl-4-methyl-1H-indole through sequential functionalization of readily available 4-methyl-1H-indole. Cyano and aldehyde functionalities are regioselectively installed at the 2 and 5 position, respectively. The sequence is concise and high-yielding, amenable for kilogram scale production.
我们通过容易获得的4-甲基-1 H-吲哚的顺序官能化报告了2-氰基-5-甲酰基-4-甲基-1 H-吲哚的五步合成法。氰基和醛官能团分别区域选择性地安装在2和5位。序列简洁,高产,适合公斤级生产。