Journal
CHEMICAL COMMUNICATIONS
Volume -, Issue 40, Pages 5083-5085Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b509269h
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Exposure of 1-alkynyl[p-(trifluoromethyl)phenyl](tetrafluoroborato)-lambda(3)-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.
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