sodium hydroxide; dihydrogen peroxide; lithium triethylborohydride 1.) THF, RT, 30 min; Yield given. Multistep reaction;

1: NaH / dimethylformamide / 2 h / 25 °C 2: 1.) HCl, 2.) t-BuOH/t-BuOK / 2.) 10 h, 25 degC View Scheme