反应详情

To a solution of N-(3-aminobenzoyl)methanesulfonamide (400 mg) in dioxane (4 ml) and 1N sodium hydroxide solution (3.73 ml) was added phenyl chloroformate (351 mg) under ice-cooling, and the mixture was stirred for 2.5 hours at ambient temperature. Water was added thereto, the mixture was adjusted pH 3 with hydrochloric acid. The mixture was extracted with chloroform-methanol, and the extract was dried over magnesium sulfate and concentrated in vacuo to give phenyl 3-(methanesulfonylaminocarbonyl)phenylcarbamate (600 mg) as colorless crystals.

1. temperaturecooling
2. extractionThe mixture was extracted with chloroform-methanol
3. dry with materialthe extract was dried over magnesium sulfate
4. concentrationconcentrated in vacuo