OLANZAPINE SALTS AND THEIR CONVERSION TO OLANZAPINE FREE BASE

摘要

The present invention provides salts olanzapine useful as intermediates in the isolation of olanzapine from complex reaction mixtures. These salts can be used for the production of olanzapine base which has a suitable purity for pharmaceutical use and can easily be converted to anhydrous olanzapine polymorphic form I, in high yields.