The present invention provides methods for the conversion of thebaine to a morphine derivative, such as hydrocodone. Novel ketal intermediates of the conversion are provided. A one-pot procedure for the conversion comprises treating thebaine with an acid in the presence of a metal catalyst.
[EN] O-DEMETHYLATING PROCESS OF METHOXY SUBSTITUTED MORPHINAN-6-ONE DERIVATIVES<br/>[FR] PROCÉDÉ D'O-DÉMÉTHYLATION DE DÉRIVÉS DE MORPHINAN-6-ONE MÉTHOXY-SUBSTITUÉS
申请人:CILAG AG
公开号:WO2015155181A1
公开(公告)日:2015-10-15
The present invention relates to an improved process for O-demethylating methoxy substituted morphinan-6-one derivatives using AlCl3 as a demethylating agent in a reaction-inert solvent having a water content ranging from 0.1 %wt to 0.8 %wt.10
O-demethylating process of methoxy substituted morphinan-6-one derivatives
申请人:CILAG AG
公开号:US10005791B2
公开(公告)日:2018-06-26
The present invention relates to an improved process for O-demethylating methoxy substituted morphinan-6-one derivatives using AlCl3 as a demethylating agent in a reaction-inert solvent having a water content ranging from 0.1% wt to 0.8% wt. 10.