1: 29 percent / 3,5-di-tert-butyl-1,2-benzoquinone / methanol / 18 h / 40 °C 2: 36 percent / CAN, pyridine-2,6-dicarboxylic acid N-oxide / H2O; acetonitrile / 0.5 h View Scheme

With  hydrogen; palladium on activated charcoal in  methanol P=760 Torr; 2 h;   

Multi-step reaction with 4 steps 1: 96 percent / benzoyl chloride / H2O / 0.5 h / Ambient temperature2: 100 percent / cc. HCl, hydrogen / 10percent palladium on carbon / methanol / 2 h / 760 Torr3: 75 percent / triethylamine, DCC / CHCl3 / 0.25 h / 0 °C4: 100 percent / hydrogen / 10percent palladium on carbon / methanol / 2 h / 760 Torr  

Multi-step reaction with 3 steps 1: 29 percent / 3,5-di-tert-butyl-1,2-benzoquinone / methanol / 18 h / 40 °C2: 52 percent / CAN, pyridine-2,6-dicarboxylic acid N-oxide / H2O; acetonitrile / 0.5 h3: 65 percent / 15percent H2SO4 / dioxane; acetone / 0.83 h / 60 °C