996-97-4Relevant articles and documents
PROCESS FOR PREPARATION OF N,N-DI SUBSTITUTED CARBOXAMIDES
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Paragraph 0099-0100, (2015/05/13)
The present disclosure relates to a single pot process for preparation of a N,N-di substituted carboxamide compounds of formula (I), said process comprising: reacting a carboxylic acid with a di-substituted carbamoyl chloride in presence of an organic tertiary base to obtain the N,N-di substituted carboxamide compounds of formula (I). The process of the present disclosure involves a simple step, and it is energy and time saving process for preparation of N,N-di substituted carboxamides.
XtalFluor-E, an efficient coupling reagent for amidation of carboxylic acids
Orliac, Aurélie,Gomez Pardo, Domingo,Bombrun, Agnès,Cossy, Janine
, p. 902 - 905 (2013/03/29)
Amides were produced from carboxylic acids and amines by using XtalFluor-E as an activator. Even poorly reactive carboxylic acids can be transformed to amides. In addition, optically active amines and/or carboxylic acids were not epimerized/racemized during the process.
Niobium pentachloride promoted conversion of carboxylic acids to carboxamides: Synthesis of the 4-aryl-1,2,3,4-tetrahydroisoquinoline alkaloid structures
Nery, Marcelo S.,Ribeiro, Renata P.,Lopes, Claudio C.,Lopes, Rosangela S. C.
, p. 272 - 276 (2007/10/03)
A practical method for the conversion of carboxylic acids to the corresponding carboxamides mediated by niobium pentachloride under mild conditions is described. The synthesis of the 4-aryl-1,2,3,4-tetrahydroisoquinoline alkaloid structures was accomplished via benzylic lithiation of N-methyl-3,4-dimethoxy-2-(4′-methoxybenzyl)benzamide.