Some new Compomds 1a (PMBP - tsc), 1b (PMBP - mtsc), 2a (PMAP - tsc), 2b (P
MAP mtsc), 3a (PMCP - tsc), 3b ( PMCP - mtsc) have been synthesized by the
reaction of 4 - acylpyrazolone with thiosemicarbazine or S - methyl - dithi
ocarbazate. The products were characterized by elemental analysis,IR, H-1 N
MR and MS spectroscopy. The crystal structure of two compounds(la,3b) were
determined by X - ray diffraction analysis.