ChemInform Abstract: Synthesis of ent‐Ketorfanol via a C—H Alkenylation/Torquoselective 6π Electrocyclization Cascade. Issue 7 (January 2016) - Phillips, Eric M.; Mesganaw, Tehetena; Patel, Ashay; Duttwyler, Simon; Mercado, Brandon Q.; Houk, Kendall N.; Ellman, Jonathan A.