3-step synthesis of pyrazolotriazole couplers and coupler intermediates

摘要

A process and intermediate useful for forming a 1H-Pyrazolo[1,5-b][1,2,4]triazole compounds comprise the step of reacting a 1,5-diaminopyrazole bearing a substituent, bonded to one and only one of the amine nitrogens by an acyl or thioacyl group, with a dehydrating agent in the presence of an aprotic solvent.