Production of opioid analgesics

Details Production of opioid analgesics Production of opioid analgesics

2005-01-21

2008-03-25

Dentz, Bernard (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C546S045000

Reexamination Certificate

active

07348430

ABSTRACT:
The present invention includes a process for the manufacture of dihydrothebaine, dihydrocodeinone enol acetate, hydrocodone, and analogs thereof by reacting dihydrocodeine or analogs thereof with benzophenone in the presence of potassium tert-alkylate in a hydrocarbon solvent to generate a reaction mixture containing an enolate of the corresponding ketone, followed by addition of the reaction mixture to the electrophilic agent and isolation of the product.

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