methanol; disodium hydrogenphosphate; sodium amalgam 2 h; Heating;

1: 96 percent / n-BuLi / tetrahydrofuran; hexane / 1.) -78 deg C, 20 min, 2.) -78 deg C to room temperature, room temperature, 12 h 2: 93 percent / methanol, 5 percent Na(Hg), dibasic sodium phosphate / 2 h / Heating View Scheme

1: n-BuLi / 1.) -78 deg C, 1 h, 2.) 0 deg C, 2 h 2: Na-Hg / ethanol / 1 h / Heating View Scheme