41135-98-2Relevant articles and documents
Direct and simple O-demethylation of thebaine to oripavine
Coop, Andrew,Lewis, John W.,Rice, Kenner C.
, p. 6774 - 6774 (1996)
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PROCESS FOR OBTAINING 3,14-DIACETYLOXYMORPHONE FROM ORIPAVINE
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Page/Page column 20; 21, (2018/01/17)
The present invention relates to a new process for obtaining 3,14-diacetyloxymorphone from oripavine, a process to transform the obtained 3,14-diacetyloxymorphone into a noroxymorphone and a process to transform said noroxymorphone into naloxone, naltrexone, nalbuphine, nalfurafine or nalmefene.
PROCESS FOR IMPROVED OXYMORPHONE SYNTHESIS
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Paragraph 0644-0655; 0703-0717, (2017/02/24)
Processes for preparing oxymorphone are provided. Said processes encompass a step which is a hydrogenation of an 14-hydroxymorphinone salt in the presence of trifluoroacetic acid and/or a glycol.