HCID 21528841, compound → Benzenesulfonamide, 3-chloro-4-(2,5-dioxo-3-phenyl-1-imidazolidinyl)-

Participants

Reaction Steps

2-(N-carboxy-phenylamino)-N-(2-chloro-4-sulphamoylphenyl)-acetamide (5.0 g) was heated in acetic anhydride (20 ml) 2 hr at 80°. The anhydride was then distilled off and the residue digested with water, filtered off and further washed with water to yield 3.5 g, m.p. 241°-243° on recrystallisation from ethyl acetate.

Provenance & Evidence