0.166667 h;

1: TEBA / 1.) 30 min, room temp., 2.) CH2Cl2, H2O, 2 h 2: 96 percent / NaH / dimethylformamide / 2 h / 0 °C 3: NaOH / ethanol; H2O / 2 h / Heating 4: 98 percent / 0.17 h View Scheme

1: NaOH / ethanol; H2O / 2 h / Heating 2: 98 percent / 0.17 h View Scheme

1: 96 percent / NaH / dimethylformamide / 2 h / 0 °C 2: NaOH / ethanol; H2O / 2 h / Heating 3: 98 percent / 0.17 h View Scheme