An isolated Atomoxetine impurity, method of producing Atomoxetine impurities and their use as reference standards

摘要

The present invention provides improved processes for the preparation of atomoxetine hydrochloride under reaction conditions that improve reaction yields and facilitate commercial synthesis. In particular, the invention is directed to the synthesis of atomoxetine HCl by adding HCl to a mixture of (R)-(-)-tomoxetine (S)-(+)-mandelate with an organic solvent, with or without a base and water.