1: 75 percent / H2 / 10percent Pd/C / ethanol / 2 h / 1292.9 Torr 2: 75 percent / 2,4-bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane 2,4-disulfide / toluene / 12 h / 80 °C 3: 70 percent / 1 N aq. NaOH / 6 h / Ambient temperature View Scheme

sodium methylate in methanol Ambient temperature;