Fig. 5: The separate continuous-flow modules for 7 and 6.
From: Flow chemistry-enabled asymmetric synthesis of cyproterone acetate in a chemo-biocatalytic approach
a The two-step synthesis of 7 via Δ6-dehydrogenation/ketalization of 8. b The Corey-Chaykovsky cyclopropanation of 7. PTFE, Polytetrafluoroethylene; TMSOI, Trimethylsulfoxonium.
