Machara, A.; D. Cox, P.; Hudlicky, T. Direct Synthesis of Naltrexone by Palladium-Catalyzed N -Demethylation/Acylation of Oxymorphone: The Benefit of CH Activation and the Intramolecular Acyl Transfer from C-14 Hydroxy. Advanced Synthesis & Catalysis 2012, 354 (14-15), 2713-2718 DOI: 10.1002/adsc.201200677.