Ochiai Masahito, Tada Norihiro
Faculty of Pharmaceutical Sciences, University of Tokushima, 1-78 Shomachi, Tokushima 770-8505, Japan.
Chem Commun (Camb). 2005 Oct 28(40):5083-5. doi: 10.1039/b509269h. Epub 2005 Sep 14.
Exposure of 1-alkynylp-(trifluoromethyl)phenyl-lambda3-bromanes to 2-mercaptobenzimidazole or benzothiazole in dichloromethane at 0 degrees C under argon resulted in a domino Michael addition-carbene rearrangement-cyclization reaction to produce directly tricyclic heterocycles in high yields, whereas the reaction with 2-mercaptobenzoxazole afforded 1-alkynyl sulfides.
在氩气氛围下,于0℃将1-炔基p-(三氟甲基)苯基-λ³-溴烷与2-巯基苯并咪唑或苯并噻唑在二氯甲烷中反应,会引发多米诺迈克尔加成-卡宾重排-环化反应,直接高产率地生成三环杂环化合物,而与2-巯基苯并恶唑反应则得到1-炔基硫醚。