Sodium hydride → Phenyl p-(2-pyrrolidinoethoxy)benzoate

Participants

Reaction Conditions

Reaction Steps

To 300 ml. of DMF were added 107 grams of phenyl p-hydroxybenzoate and 26 grams of sodium hydride (50 percent in oil). The mixture was heated at 60° C. for two hours. To the mixture then were added 67 grams of 1-chloro-2-pyrrolidinoethane, and the mixture was stirred overnight at 85° C. The bulk of the DMF then was evaporated from the mixture. Water was added to the residue, and the aqueous mixture was extracted with ethyl acetate. The ethyl acetate extract was concentrated, and the residue was dissolved in a 1:1 mixture of ether and ethyl acetate. The organic solution then was extracted with 2 N hydrochloric acid, and the acid extract was added dropwise to 2 N sodium hydroxide. The resulting mixture was extracted with ethyl acetate, and the ethyl acetate extract was washed and then dried over magnesium sulfate. The ethyl acetate was concentrated to obtain 110 grams of crude phenyl p-(2-pyrrolidinoethoxy)-benzoate.

Provenance & Evidence