Novel palladium catalyzed dehydrogenation of alpha-hydrazinonitriles to hydrazonoyl cyanides using cyclopentene. Synthesis of 1H-pyrazole-4-carboxylate
Palladium charcoal catalyzed dehydrogenation of alpha-hydrazinonitriles has been found to give hydrazonoyl cyanides in the presence of cyclopentene in high yields, which was applied to the synthesis of 1H-pyrazole-4-carboxylates. Copyright (C) 1996 Elsevier Science Ltd