Líquidos iônicos (ILs) baseados em 1,3-dialquilimidazólio e amônea têm sido usados como meio de reação eficiente para amidação de diversos ácidos carboxílicos com isocianatos. Esse método tem larga aplicação e o procedimento é suave e eficiente quando comparado aos métodos existentes, baseados em solventes convencionais. O "projeto" adequado do (ILs) permite a obtenção de amidas com resultados de bom a excelente. Nessa reação, tanto pode ser usado um isocianato aromático, quanto um alifático.Ionic liquids (ILs) based on 1,3-dialkylimidazolium and ammonium have been used as an efficient reaction media in the amidation of several carboxylic acids with isocyanates. The method has wide applicability, and the protocol is mild and efficient compared to the existing methods based on conventional solvents. Proper 'design' of the ILs allows us to obtain amides in good to excellent yields. In this reaction, both aromatic and aliphatic isocyanates could be used.
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