Phenyl Isothiocyanate → Thiourea, N-[4-(2-formylhydrazinyl)phenyl]-N'-phenyl-

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Reaction Steps

1-Formyl-2-(4-aminophenyl)hydrazine (30 g, 0.20 mole) was dissolved in acetonitrile (550 ml) with heat. Phenyl isothiocyanate (28 g, 0.22 mole) was added in one portion. The mixture was refluxed for 5 minutes and then chilled. The solid was filtered off, washed with acetonitrile and dried at 75° C. Yield 52 g (91%), m.p. 188°-188.5° C.

Provenance & Evidence