Formamide, a novel challenging reagent for the direct synthesis of non-N-substituted cyclic imides
CI Chiriac, M Nechifor, F Tanasa, N Marioara
Index: Chiriac, Constantin I.; Nechifor, Marioara; Tanasa, Fulga Revue Roumaine de Chimie, 2007 , vol. 52, # 8-9 p. 883 - 886
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Citation Number: 9
Abstract
Aliphatic and aromatic cyclic imides have been prepared in high to moderate yields from cyclic carboxylic anhydrides or corresponding dicarboxylic acids, using formamide as reagent at 170-180 C for 5-6 hours. In the case of aromatic products with lower solubility in formamide, we used N-methyl-2-pyrrolidinone (NMP) as supplementary solvent, which facilitates the reaction.
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