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ChemicalBook CAS DataBase List N,N-dimethyl-2-oxo-1,3-dihydroindole-5-sulfonamide
170565-89-6

N,N-dimethyl-2-oxo-1,3-dihydroindole-5-sulfonamide synthesis

3synthesis methods
-

Yield:170565-89-6 79%

Reaction Conditions:

with hydrogenchloride;sodium hydroxide in methanol;dimethyl amine;

Steps:

5-Dimethylaminosulfonyl-2-oxindole

5-Dimethylaminosulfonyl-2-oxindole A suspension of 2.3 g 5-chlorosulfonyl-2-oxindole in 10 mL 2M dimethylamine in methanol was stirred at room temperature for 4 hours at which time a white solid formed. The precipitate was collected by vacuum filtration, washed with 5 mL of 1N sodium hydroxide and 5 mL of 1N hydrochloric acid and dried under vacuum at 40° C. overnight to give 1.9 g (79% yield) of 5-dimethylamino-sulfonyl-2-oxindole.

References:

US2003/69421,2003,A1