HCID 21528841, compound → Benzenesulfonamide, 3-chloro-4-(2,5-dioxo-3-phenyl-1-imidazolidinyl)-
Reaction equation
[C:1]([N:4]([C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1)[CH2:5][C:6]([NH:8][C:9]1[CH:14]=[CH:13][C:12]([S:15](=[O:18])(=[O:17])[NH2:16])=[CH:11][C:10]=1[Cl:19])=[O:7])(O)=[O:2]>C(OC(=O)C)(=O)C>[C:20]1([N:4]2[CH2:5][C:6](=[O:7])[N:8]([C:9]3[CH:14]=[CH:13][C:12]([S:15](=[O:18])(=[O:17])[NH2:16])=[CH:11][C:10]=3[Cl:19])[C:1]2=[O:2])[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1Participants
3
Reactant 1
Product 1
Reagents, catalysts & solvents 1
Procedure
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.
Workup
- distillationThe anhydride was then distilled off
- filtrationthe residue digested with water, filtered off