Multi-step reaction with 2 steps 1: 1.45 g / t-butylhypochlorite / benzene / 2 h / in the dark2: 34.66 percent / AgBF4 / diethyl ether  

Multi-step reaction with 3 steps 1: 10.0 g / sodium carbonate / methanol; H2O / 1) room temperature, 2) reflux, 2 h2: 1.45 g / t-butylhypochlorite / benzene / 2 h / in the dark3: 34.66 percent / AgBF4 / diethyl ether