4-Hydroxy-3-thiosemicarbazid

摘要

The synthesis of 4-hydroxy-3-thiosemicarbazide (3) by hydrazinolysis of O-p-chlorophenyl-N-hydroxy-thiocarbamate (2) is described. A mechanism for the decomposition of2to O-p-chlorophenyl-carbamate (6) and sulfur is discussed.