Ethanol → Benzenesulfonamide, 3-chloro-4-(3-(4-methoxyphenyl)-5-oxo-1-imidazolidinyl)-

Participants

Reaction Steps

The product of stage a) (15g) was dissolved in ethanol (200 ml) and treated with paraformaldehyde (2.5g) in water (400 ml). The mixture was refluxed for 3 hours, cooled in ice/water and filtered to yield the title product (5 g), m.p. 221°-223°

Provenance & Evidence