Hydrochloric Acid → HCID 19004374, compound

Participants

Reaction Steps

A mixture of 4-[[2-[4-(aminosulfonyl)phenoxy]ethyl]oxy]-alpha-oxobenzeneacetic acid methyl ester (0.3 g) and 0.5N sodium hydroxide (6 mL) was warmed on the steam bath for 5 minutes and allowed to cool over 10 minutes. The clear solution was acidified with 1N hydrochloric acid (4 mL) and the resulting mixture chilled, filtered, and the solids washed with water. The solids were dried over phosphorus pentoxide at 70° C. and 0.1 mm to give 0.27 g of colorless 4-[[2-[4- (aminosulfonyl)phenoxy]ethyl]oxy]-alpha-oxobenzeneacetic acid as a 4:1 molar hydrate, mp 178°-179° C. with decomposition.

Provenance & Evidence