Synfacts, Table of Contents Synfacts 2025; 21(01): 18DOI: 10.1055/a-2467-4746 Synthesis of Heterocycles Modular Access to Oxymorphinan Derivatives Contributor(s): Paul Richardson (Pfizer) Recommend Article Abstract Buy Article Keywords KeywordsHeck reaction - Noyori reduction - epoxide opening - Birch reduction Full Text