Hydrochloric Acid → HCID 9862020, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 1.5 g of N-(2′,6′-dichloro-4′-methylphenyl)-5-methyloxindole, 18 ml of ethanol and 1 ml of water is heated to reflux. 1.9 g of a 30% sodium hydroxide solution is slowly added and reflux is continued for 4-5 h. The solution is cooled to about 40° C. and treated slowly with a solution of 1.5 g of concentrated hydrochloric acid in 12 ml of water up to a pH of 3-4. The obtained suspension is cooled to 20° C. The crystals are collected by filtration, washed with water and dried giving 5-Methyl-2-(2′,6′-dichloro-4′-methylanilino)phenylacetic acid.

Provenance & Evidence