PROCESSES FOR PREPARING MORPHINAN-6-ONE PRODUCTS WITH LOW LEVELS OF ALPHA BETA-UNSATURATED COMPOUNDS

摘要

The present invention generally relates to processes for preparing highly pure morphinan-6-one products. The processes involve reducing the concentration ofα,β-unsaturated ketone compounds present as impurities in morphinan 6 one products or reaction mixtures including morphinan 6 one compounds by treatment with a sulfur-containing compound. (A)