1: indium trifluoromethanesulfonate; O-benzoylquinine; triethylamine / toluene / 16.33 h / -78 - 20 °C / Inert atmosphere 2: samarium diiodide; samarium; isopropyl alcohol 3: 10 palladium on activated charcoal; hydrogen / tetrahydrofuran 4: lead(IV) tetraacetate / N,N-dimethyl-formamide View Scheme

Multi-step reaction with 3 steps 1: indium trifluoromethanesulfonate; O-benzoylquinine; triethylamine / toluene / 16.33 h / -78 - 20 °C / Inert atmosphere2: samarium diiodide; samarium; isopropyl alcohol3: 10 palladium on activated charcoal; hydrogen / tetrahydrofuran