Benzoic acid, 2-(isocyanatosulfonyl)-, methyl ester → N-(4-cyclopropyl-6-methoxy-1,3,5-triazin-2-yl)-N'-(2-methoxycarbonylbenzenesulfonyl)urea

Participants

Reaction Steps

2.1 g of 2-methoxycarbonylbenzenesulfonylisocyanate are added with stirring, under a nitrogen atmosphere, to a solution of 1.3 g of 2-amino-4-cyclopropyl-6-methoxy-1,3,5-triazine in 10 ml of CH2Cl2. A slight exothermic reaction occurs, which soon however subsides. Stirring is maintained for 14 hours at room temperature, and the solution is then caused to crystallise by the addition of ether. The precipitate is filtered off and dried. The yield is 2.3 g of the above urea, which melts at 166°-168° C.

Provenance & Evidence