Preparation of saturated ketone morphinan compounds by catalytic isomerisation

US9981978B2 · kind B2 · utility

Assignee

• CAMBREX CHARLES CITY, INC. · US

Inventors

• Michael R. Tracey · Readington, US
• Pär Holmberg · Bodafors, SE
• Belén Lindberg Martín Matute · Stockholm, SE
• Antonio Bermejo Gómez · Sundbyberg, SE
• Jan-Erling Bäckvall · Stocksund, SE

Key dates

• Filing date: Jul 23, 2014
• Grant date: May 29, 2018
• Expiry date: Jan 10, 2035

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/822
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

There is provided a novel process for the preparation of a compound of formula I, wherein R1, R2 and R3 are as described in the description, by conversion of a corresponding allylic alcohol.