HCID 23453038, compound → HCID 23453030, compound

Participants

Reaction Steps

13.5 g ethyl 4-[2-(4-chlorobenzamido)-ethyl]-phenylacetate, dissolved in 110 ml methanol and 39 ml 2 N aqueous potassium hydroxide solution, are maintained at reflux temperature for 12 hours. The solution is then evaporated in a vacuum. After dilution with water, it is extracted with diethyl ether, the aqueous phase is filtered, with the addition of active charcoal, and the filtrate is acidified. There are obtained 11.7 g (95% of theory) of acid which is recrystallized from 25 ml glacial acetic acid. There are obtained 8.2 g (66% of theory) 4-[2-(4-chlorobenzamido)-ethyl]-phenylacetic acid; m.p. 186°-187° C. From the mother liquor, there is obtained a further 1.9 g (15% of theory) of this acid, which has a melting point of 182°-183° C.

Provenance & Evidence