METHOD OF MANUFACTURE OF ALANZAPINE, NEW DERIVATIVE OF N-DEMETHYL OLANZAPINE AND METHOD OF MANUFACTURE OF NEW DERIVATIVE OF N-DEMETHYL OLANZAPINE

摘要

The invention relates to a process for the preparation of olanzapine and to a new intermediate compound, 2-methyl-4-(4-formyl-1-piperazinyl)-10H-thieno[2,3-b][1,5]-benzodiazepine of formula III and a process for the preparation thereof.