oxycodone -> oxymorphone with hydrobromic acid

[taig]

I haven't found that method mentioned on rhodium or elsewhere, but there is a US patent 2806033 that describes how to demethylate oxycodone by boiling with concd hydrobromic acid. I couldn't find the full patent text, does anyone know how that method works and at what yields?

Thanks,
_{Slow your speech and lower the pitch of your voice.}

[carboxyl]

http://l2.espacenet.com/espacenet/bnsviewer?CY=gb&LG=en&DB=EPD&PN=US2806033&ID=US+++2806033A1+I+

The above post is purely fictional. Any resemblance to "real-life" is purely coincidental.

[taig]

Thanks. Well, it looks like Epikur's mthod at rhodium has a much better yield.
_{Slow your speech and lower the pitch of your voice.}