Morfinonderivat og fremgangsmate for fremstilling av slike samt mellomprodukter

The present invention relates to process for the preparation of a 14-hydroxynormorphinone derivative of formula IV comprising reacting the compound of formula III, with a cobalt (II) oxidant in the presence of a mild base and air or oxygen as the cooxidant; wherein R1 is (1C-7C)alkyl optionally subs...

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Hauptverfasser: VRIJHOF, LINDERS JOANNES THEODORUS MARIA
Format: Patent
Sprache:nor
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Beschreibung
Zusammenfassung:The present invention relates to process for the preparation of a 14-hydroxynormorphinone derivative of formula IV comprising reacting the compound of formula III, with a cobalt (II) oxidant in the presence of a mild base and air or oxygen as the cooxidant; wherein R1 is (1C-7C)alkyl optionally substituted with one or more chlorines, butenyl, vinyl, benzyl, phenyl or naphthyl; and R2 is benzyl or benzyl substituted with one or more (1C-6C)alkoxy group or benzyl substituted with one or more halogen. The process is very suitable in the production of noroxymorphone.