Perfluoro- and polyfluorosulfonic acids. 21. Synthesis of difluoromethyl esters using fluorosulfonyldifluoroacetic acid as a difluorocarbene precursor
作者:Qingyun Chen、Shengwen Wu
DOI:10.1021/jo00274a012
日期:1989.6
CHEN, QING-YUN;WU, SHENG-WEN, J. ORG. CHEM., 54,(1989) N3, C. 3023-3027
作者:CHEN, QING-YUN、WU, SHENG-WEN
DOI:——
日期:——
New Electrophilic Difluoromethylating Reagent
作者:G. K. Surya Prakash、Csaba Weber、Sujith Chacko、George A. Olah
DOI:10.1021/ol070195g
日期:2007.5.1
A new electrophilic difluoromethylating reagent has been developed. The S-(difluoromethyl)diarylsulfonium tetrafluoroborate has been shown to be effective for the introduction of an electrophilic difluoromethyl group into the following nucleophiles: sulfonic acids, tertiary amines, imidazole derivatives, and phosphines. The reagent failed to transfer the difluoromethyl group to phenols, carbon nucleophiles