Originator
Mediator,Servier,France,1976
Manufacturing Process
To a solution of 24.7 parts of 1-(m-trifluoromethylphenyl)-2-(β-
hydroxyethyl)amino propane in 140 parts of anhydrous benzene, there were
added successively 15 parts of 4.7N hydrochloric ether and a solution of 14
parts of benzoyl chloride in 24 parts of anhydrous benzene. The addition
required 10 minutes, the reaction mixture was then refluxed for 8 hours.
The solid product was collected by filtration and after recrystallization from
230 parts of ethyl acetate, there were obtained 15 parts of 1-(mtrifluoromethylphenyl)-
2-(β-benzoyloxyethyl)amino propane hydrochloride
melting at 161°C.
10 parts hydrochloride are put in suspension in 100 parts of water, 80 parts
ether are added, then 10 parts of a concentrated solution of ammonium
hydroxide. The mixture is stirred a few minutes until the salt is dissolved,
then the ethered solution is poured off and dried. After the ether is
eliminated, 9 parts of 1-(m-trifluoromethylphenyl)-2-(β-
benzoyloxyethyl)amino propane are obtained; the base is a colorless oil.
