Carbamoylimidazolium and thiocarbamoylimidazolium salts: novel reagents for the synthesis of ureas, thioureas, carbamates, thiocarbamates and amides
作者:Justyna A. Grzyb、Ming Shen、Chiaki Yoshina-Ishii、W. Chi、R.Stanley Brown、Robert A. Batey
DOI:10.1016/j.tet.2005.05.056
日期:2005.7
Carbamoylimidazolium salts act as efficient N,N-disubstituted carbamoylating reagents. These salts are readily prepared by the sequential treatment of secondary amines with N,N′-carbonyldiimidazole (CDI) and iodomethane. The carbamoylimidazolium salts are more efficient carbamoyl transfer reagents than the intermediate carbamoylimidazoles, as a result of the ‘imidazolium’ effect. Kinetic studies on
Carbamoylimidazolium salts as diversification reagents: an application to the synthesis of tertiary amides from carboxylic acids
作者:Justyna A. Grzyb、Robert A. Batey
DOI:10.1016/j.tetlet.2003.08.026
日期:2003.9
preparation of tertiaryamides from carbamoylimidazolium salts and carboxylic acids is described. The transformation occurs at room temperature and under relatively mild conditions. The carbamoylimidazolium salts are obtained from the reaction of secondary amines with N,N′-carbonyldiimidazole, followed by methylation with methyl iodide. The utility of this reaction was demonstrated in the formation of Weinreb
[EN] MODULATORS OF CYSTIC FIBROSIS TRANSMEMBRANE CONDUCTANCE REGULATOR<br/>[FR] MODULATEURS DU RÉGULATEUR DE LA CONDUCTANCE TRANSMEMBRANAIRE DE LA MUCOVISCIDOSE
申请人:VERTEX PHARMA
公开号:WO2022076625A1
公开(公告)日:2022-04-14
This disclosure provides modulators of Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) having core structure (I), pharmaceutical compositions containing at least one such modulator, methods of treatment of CFTR mediated diseases, including cystic fibrosis, using such modulators and pharmaceutical compositions, combination pharmaceutical compositions and combination therapies, and processes and intermediates for making such modulators.