Base-Catalyzed Conjugate Addition of Thiols to Indolyl Acrylic Acids and in situ Decarboxylation: An Expedient Synthesis of Functionalized 3-(1-Thio)ethyl-1H-indoles
作者:Ching-Fa Yao、Shijay Gao、Chi Tseng、B. Raju、Chen Tsai
DOI:10.1055/s-0029-1218294
日期:2009.12
thio)ethyl-1H-indoles is described herein. This simple procedure in- volves the Michael addition of thiols to 3-indoleacrylic acids fol- lowed by in situ decarboxylation of the Michael adduct in the presence of a catalytic amount of K2CO3 in DMF at 100 °C. The method was found to be fairly general with various thiols and dif- ferent 3-indoleacrylic acids.
本文描述了用于合成 3-(1-硫代)乙基-1H-吲哚的一锅两步法。这个简单的过程包括硫醇与 3-吲哚丙烯酸的迈克尔加成,然后在 100 °C 下在 DMF 中存在催化量的 K2CO3 的情况下,迈克尔加合物的原位脱羧。发现该方法对于各种硫醇和不同的 3-吲哚丙烯酸相当通用。