Aqueous Base Promoted O-Difluoromethylation of Carboxylic Acids with TMSCF2Br: Bench-Top Access to Difluoromethyl Esters
摘要:
A method for the O-difluoromethylation of carboxylic acids using commercially available TMSCF2Br is disclosed. The devised benchtop reaction system is air-stable and offers mild reaction conditions while using readily available reagents and solvents. The method is applicable to both aliphatic and aromatic carboxylic acids while demonstrating compatibility with a range of commonly encountered functional groups. The difluoromethyl esters of FDA approved drugs and pharmaceutically relevant molecules are also presented, demonstrating the potential for late-stage functionalization.
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:——
METALLOENZYME INHIBITOR COMPOUNDS
申请人:Viamet Pharmaceuticals, Inc.
公开号:EP2721023A1
公开(公告)日:2014-04-23
[EN] METALLOENZYME INHIBITOR COMPOUNDS<br/>[FR] COMPOSÉS INHIBITEURS DE MÉTALLOENZYMES
申请人:VIAMET PHARMACEUTICALS INC
公开号:WO2012177635A1
公开(公告)日:2012-12-27
The instant invention describes compounds having metalloenzyme modulating activity, and methods of treating diseases, disorders or symptoms thereof mediated by such metalloenzymes.
Aqueous Base Promoted <i>O</i>-Difluoromethylation of Carboxylic Acids with TMSCF<sub>2</sub>Br: Bench-Top Access to Difluoromethyl Esters
作者:Vinayak Krishnamurti、Colby Barrett、Xanath Ispizua-Rodriguez、Matthew Coe、G. K. Surya Prakash
DOI:10.1021/acs.orglett.9b03604
日期:2019.12.6
A method for the O-difluoromethylation of carboxylic acids using commercially available TMSCF2Br is disclosed. The devised benchtop reaction system is air-stable and offers mild reaction conditions while using readily available reagents and solvents. The method is applicable to both aliphatic and aromatic carboxylic acids while demonstrating compatibility with a range of commonly encountered functional groups. The difluoromethyl esters of FDA approved drugs and pharmaceutically relevant molecules are also presented, demonstrating the potential for late-stage functionalization.