121734-80-3Relevant articles and documents
BORONIC ACID CATALYSTS AND METHODS OF USE THEREOF FOR ACTIVATION AND TRANSFORMATION OF CARBOXYLIC ACIDS
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Page/Page column 61, (2012/09/10)
The present application provides methods and catalysts for activation of carboxylic acids for organic reactions. In particular, methods are disclosed for direct nucleophilic addition reactions, such as, amidation reactions with amines, cycloadditions, and conjugate additions, using boronic acid catalysts of formula I, II or III: Also included are novel boronic acid catalysts of formula IV, V and III:
N-Acyltrifluoromethanesulfonamides as new chemoselective acylating agents for aliphatic and aromatic amines
Guillard, Sophie,Aramini, Andrea,Cesta, Maria C.,Colagioia, Sandro,Coniglio, Silvia,Genovese, Filippo,Nano, Giuseppe,Nuzzo, Emanuela,Orlando, Valerie,Allegretti, Marcello
, p. 5608 - 5616 (2007/10/03)
This work describes advances in the study of the internal condensation of ammonium salts of N-acylsulfonamides. N-Acyltrifluoromethanesulfonamides show considerable advantages over the non fluorinated analogues by virtue of their higher reactivity and aci