期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 55, 期 1, 页码 273-277出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201509711
关键词
carbenes; diazo compounds; difluorocarbene; fluorine; hydrazones
资金
- National Basic Research Program of China (973 Program) [2012CB821600]
- NSFC [21472004, 21332002]
A transition-metal-free difluoromethylenation of diazo compounds that proceeds under mild conditions has been developed and is based on the use of TMSCF2Br as the difluoromethylene source and tetrabutylammonium bromide (TBAB) as the promoter. The chemoselective formal carbene dimerization reaction is achieved owing to the electronic properties and the relative stability of the difluorocarbene intermediate.
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