One-pot synthesis of N-phenyl-N′-(arylcarbonothioyl)-N-arylhydrazide derivatives from hydrazonoyl chlorides with sodium sulfide and aryldiazonium salts

The one-pot synthesis of N-phenyl-N′-(arylcarbonothioyl)-N-arylhydrazides is described by the reaction between two equiv. of hydrazonoyl chloride and sodium sulfide in the presence of aryldiazonium fluoroborates in DMF at room temperature.