Sodium Hydroxide → 2-Chloro-N-[(2-chlorophenyl)(hydroxy)methylidene]benzene-1-carbohydrazonic acid

Participants

Reaction Steps

A stirred solution of hydrazine hydrate (25 g) in water (500 ml) was treated dropwise and simultaneously with sodium hydroxide (43.6 g) in water (150 ml) and 2-chlorobenzoyl chloride (180.25 g). The addition over the mixture was stirred at room temperature for 2 hours. The solid was filtered off, washed with acetone/water 1:1 and recrystallised from acetic acid. Yield 97.5 g, m.p. 217°-219°.

Provenance & Evidence