triethylsilane; CoP; oxygen in dichloromethane; isopropyl alcohol 3 h; Ambient temperature;

pyridine in benzene

triethylsilane; 4-(N,N-dimethlyamino)pyridine; CoP; oxygen; acetic anhydride 1.) isopropanol, CH2Cl2, RT, 3 h, 2.) CH2Cl2, RT, 6 h; Yield given. Multistep reaction;