Studies of heterocyclic compounds. Part III. A synthesis of 4H-indeno[2,1-d]thiazolium salts
作者:D. H. Reid、W. G. Salmond
DOI:10.1039/j39660000686
日期:——
N-Substituted thioamides react with 1-bromoindan-2-one to give thiolimidate ester salts which are cyclised to 4H-indeno[2,1-d]thiazolium salts by thionyl chloride in dimethylformamide or phosphorus pentachloride in nitromethane. Primary thioamides lead to 4H-indeno[2,1-d]thiazoles.
N-取代的硫代酰胺与1-溴代茚满-2-酮反应,得到硫代酰亚胺酯盐,其通过在二甲基甲酰胺中的亚硫酰氯或在硝基甲烷中的五氯化磷被环化成4 H-茚并[2,1- d ]噻唑鎓盐。伯硫酰胺可生成4 H-茚并[2,1- d ]噻唑。