2,6-Dichlorobenzoyl isocyanate → 1-(2,6-Dichlorobenzoyl)-3-(5-(4-chlorophenyl)-2-pyridyl)urea

Participants

Reaction Steps

5-(4-Chlorophenyl)-2-pyridylamine (0.6 gram), 2,6-dichlorobenzoyl isocyanate (0.8 gram), in a small amount of dichloromethane were reacted at room temperature. A slight exothermic reaction was followed by an almost immediate precipitate. After 3 hours at room temperature, the reaction mixture was cooled in an ice bath and then filtered to give 770 mg of colorless crystals. The identity of the product was confirmed by NMR analysis, m.p. 230°-233° C.

Provenance & Evidence