a powdery solid vacuum drying afforded 1 7 grams of light tan solid confirmed by nmr analysis as the desired product to a chloroform solution of 2 equivalents of the sulfamoyl urea prepared as described in example i were added with stirring 2 equivalents of triethylamine and 2 equivalents of acetic anhydride the reaction mixture was allowed to stand quiescent for 24 hours and was then poured into dilute aqueous hydrochloric acid and phase separated the organic layer was washed with water and extracted with saturated aqueous sodium carbonate the basic extract was filtered and the filtrate acidified with cold dilute aqueous hydrochloric acid resulting in formation of a white precipitate after suction drying the precipitate was dried in a vacuum oven affording 1 0 gram of material confirmed by nmr analysis as the desired product to 75 milliliters of methylene chloride maintained at 0 u00b0 5 u00b0 c via an ice bath were added 1 4 grams of 4 methyl 6 methoxy 2 amino 1 3 5 triazine and 1 55 grams of chlorosulfonyl isocyanate after stirring for 3 hours at ice bath temperature a methylene chloride solution containing 1 0 gram of triethylamine and 1 4 grams of 2 1 methoxyethyl aniline was added dropwise the reaction mixture was removed from the ice bath allowed to stir an additional one half hour and then extracted with aqueous sodium carbonate solution acidification with cold dilute aqueous hydrochloric acid solution afforded a white precipitate which was suction filtered and vacuum dried affording 2 2 grams of material confirmed by.