[EN] DIFLUOROMETHYLATION OF UNSATURATED COMPOUNDS<br/>[FR] DIFLUOROMÉTHYLATION DE COMPOSÉS INSATURÉS
申请人:SCRIPPS RESEARCH INST
公开号:WO2013082028A1
公开(公告)日:2013-06-06
A reagent for carrying out a difluoromethylation reaction of unsaturated compounds and ring-nitrogen-containing aromatic compounds, a zinc difluoro-methanesulfinate, as well as a method for making the reagent and a method for its use are disclosed.
A reagent for carrying out a difluoromethylation reaction of unsaturated compounds and ring-nitrogen-containing aromatic compounds, a zinc difluoro-methanesulfinate, as well as a method for making the reagent and a method for its use are disclosed.
作者:Yuta Fujiwara、Janice A. Dixon、Rodrigo A. Rodriguez、Ryan D. Baxter、Darryl D. Dixon、Michael R. Collins、Donna G. Blackmond、Phil S. Baran
DOI:10.1021/ja211422g
日期:2012.1.25
Molecular scaffolds containing alkylfluorine substituents are desired in many areas of chemical research from materials to pharmaceuticals. Herein, we report the invention of a new reagent (Zn(SO2CF2H)(2), DFMS) for the innate difluoromethylation of organic substrates via a radical process. This mild, operationally simple, chemoselective, and scalable difluoromethylation method is compatible with a range of nitrogen-containing heteroarene substrates of varying complexity as well as select classes of conjugated pi-systems and thiols. Regiochemical comparisons suggest that the CF2H radical generated from the new reagent possesses nucleophilic character.