Reaction of an activated form of carboxylic acids with a stoichiometric amount of zinc dimethyl imidodicarbonimidate (in CH2Cl2-pyridine with molecular sieves), led to 4,6-dimethoxy-1,3,5-triazines in high yields. This method has been applied to N-benzylpyroglutamic acids, in the preparation of potential antifungal products.