Ammonia → Sertraline Hydrochloride

Participants

Reaction Steps

8.75 g of ammonium chloride are dissolved in 100 ml of n-propanol and 35 ml of water at T=50° C. 50 g of free sertraline base dissolved in 100 ml of n-propanol are added dropwise to the solution thus obtained. It Is heated under reflux and is maintained under agitation under a light nitrogen flow until ammonia is no longer evolved and the pH of the solution becomes slightly acidic. It is cooled to room temperature and is seed crystallized with 0.5 g of sertraline hydrochloride form II. A crystalline solid begins to precipitate and agitation is maintained for 1.5 hours. The solid is filtered, washed and dried under vacuum. 49.3 g of sertraline hydrochloride form II (yield 88%) are obtained.

Provenance & Evidence