Difluoromethylation of Phenols and Thiophenols with the <i>S</i>-(Difluo-romethyl)sulfonium Salt: Reaction, Scope, and Mechanistic Study
作者:Guo-Kai Liu、Wen-Bing Qin、Xin Li、Li-Ting Lin、Henry N. C. Wong
DOI:10.1021/acs.joc.9b02424
日期:2019.12.20
A facile and practical approach for the difluoromethylation of phenols and thiophenols was described. Making use of the recently developed bench-stable S-(difluoromethyl)sulfonium salt as the difluorocarbene precursor, a wide variety of diversely functionalized phenols and thiophenols were readily converted to their corresponding aryl difluoromethyl ethers in good to excellent yields in the presence
Novel Compounds and Compositions as Cathepsin Inhibitors
申请人:Patterson W. John
公开号:US20070232654A1
公开(公告)日:2007-10-04
The present invention relates to novel selective cathepsin S inhibitors, the pharmaceutically acceptable salts and N-oxides thereof, their uses as therapeutic agents and the methods of their making.
Novel compounds and compositions as cathepsin inhibitors
申请人:Graupe Michael
公开号:US20070049594A1
公开(公告)日:2007-03-01
The present invention relates to novel selective cathepsin S inhibitors, the pharmaceutically acceptable salts and N-oxides thereof, their uses as therapeutic agents and the methods of their making.
The synthesis of difluoromethyl ethers and sulfides with a simple, non-ozone-depleting reagent is described. The difluoromethylation of phenols with this reagent occurs at room temperature within minutes with exceptional functional group tolerance. The mild conditions makes possible tandem processes for the conversion of aryl boronic acids, aryl halides and arenes to difluoromethyl ethers. Mechanistic studies support a reaction pathway involving nucleophilic attack of the phenolate to difluorocarbene.
[EN] SYNTHESIS OF DIFLUOROMETHYL ETHERS AND SULFIDES<br/>[FR] SYNTHÈSE DE DIFLUOROMÉTHYLÉTHERS ET DE DIFLUOROMÉTHYLSULFURES
申请人:UNIV CALIFORNIA
公开号:WO2014107380A1
公开(公告)日:2014-07-10
The synthesis of difluoromethyl ethers and sulfides with a simple, non-ozone- depleting reagent is described. The difluoromethylation of phenols with this reagent occurs at room temperature within minutes with exceptional functional group tolerance. The mild conditions makes possible tandem processes for the conversion of aryl boronic acids, aryl halides and arenes to difluoromethyl ethers. Mechanistic studies support a reaction pathway involving nucleophilic attack of the phenolate to difluorocarbene.