Efficient synthesis of substituted thieno[3,2-e]indoles
作者:Wim Van Snick、Wim Dehaen
DOI:10.1016/j.tet.2009.08.031
日期:2009.10
giving 7- and 8-substituted thieno[3,2-e]indoles, are described. The reaction of 4-iodo-5-(methylsulfonamido)benzothiophene with terminal alkynes gave 7-substituted thienoindoles using general Sonogashira reaction conditions. Reaction of 5-amino-4-iodobenzothiophene with internal acetylenes, using Larock's heterocyclization reaction conditions, gave 7,8-disubstituted thieno[3,2-e]indoles.
描述了5-氨基苯并噻吩衍生物与内部和末端乙炔的有效环化反应,得到7-和8-取代的噻吩并[3,2- e ]吲哚。使用常规的Sonogashira反应条件,4-碘-5-(甲基磺酰胺基)苯并噻吩与末端炔烃的反应得到7-取代的噻吩并吲哚。5-氨基-4-碘苯并噻吩与内部乙炔的反应,使用Larock的杂环反应条件,得到7,8-二取代的噻吩并[3,2- e ]吲哚。