Yield of the crude reaction mixture on 0.03 mmol scale, was determined by 1 H NMR using 1,3,5-trimethoxybenzene as an internal standard. Conversion of 3-1 in parenthesis. The reaction mixture was heated to 80 °C. The reaction mixture was heated to 85°C. The reaction mixture was stirred at 23 °C. e 5.0 equiv of anhydrous TBHP in decane.