Microwave-Assisted Copper-Catalyzed Preparation of Diaryl Chalcogenides
作者:Sangit Kumar、Lars Engman
DOI:10.1021/jo060690a
日期:2006.7.1
Diaryl chalcogenide synthesis employing diaryl dichalcogenides and aryl halides as starting materials in the presence of excess magnesium and a catalytic amount of CuI/bipyridyl is significantly improved by microwave heating. Reaction times can be reduced from 2 to 3 days to 6−8 h. Both arylbromides and aryl chlorides can be used as substrates in the substitution reaction. The procedure is useful