Chemistry Letters, Vol.37, No.5, 528-529, 2008
Tetrabenzylpyrophosphate: An efficient catalyst for the synthesis of carboxamides from carboxylic acids and amines
An efficient method for the synthesis of simple and sterically hindered carboxamides from various carboxylic acids and amines using tetrabenzylpyrophosphate (TBPP) as a coupling agent in the presence of 4-(dimethylamino)pyridine, (DMAP) is described. The reaction is operationally straightforward, proceeds under mild conditions at room temperature, and affords the desired product in high yield.