反应详情

A solution of 1.3 g of 2-(N,N-dimethylsulfamoyl)-benzenesulfonyl isocyanate in 25 ml of dry acetonitrile was treated at room temperature with 0.58 g of the product from Example 4. The resulting suspension was heated to 50°-55° C. for 11/2 hours and was then stirred at room temperature for an additional 15 hours. The solution was filtered and the collected solid washed well with 1-chlorobutane and then dried to yield 0.96 g of N'-[(4,6-dimethoxy-1,3,5-triazin-2-yl)methylaminocarbonyl]-N,N-dimethyl-1,2-benzenedisulfonamide as a light yellow powder, m.p. 183°-189° C., contaminated with some of the unreacted heterocyclic amine. Stirring the crude product with 5% hydrochloric acid at room temperature for 15 minutes followed by filtration gave the pure product as a white powder, m.p. 199°-201° C.

1. temperatureThe resulting suspension was heated to 50°-55° C. for 11/2 hours
2. filtrationThe solution was filtered
3. washthe collected solid washed well with 1-chlorobutane
4. customdried