Hydrochloric Acid → HCID 86737998, compound

Participants

Reaction Steps

A solution of 0.083 g of NaOH in 30 ml of water is added to a solution of 1.0 g of 3-benzylamino-4-phenylthio-5-pyrrol-1-yl-sulfonyl-benzoic acid methyl ester in 70 ml of ethanol, and the mixture is stirred first for 4 hours at room temperature and then for 1 hour at 40° C. to complete the reaction. After stripping off the ethanol under reduced pressure, the aqueous phase is acidified with dilute hydrochloric acid and the product is filtered off and recrystallized from ethyl acetate. 3-Benzylamino-4-phenylthio-5-pyrrol-1-yl-sulfonylbenzoic acid of melting point 218°-220° C. is obtained. Yield: 60%.

Provenance & Evidence