sodium carbonate in methanol; water 12 h; Ambient temperature;

1: 28 percent / Na2CO3 / methanol; H2O / 12 h / Ambient temperature 2: 64 percent / NaBH4 / methanol; tetrahydrofuran / 1.) 3 d, room temperature, 2.) 2 h, reflux View Scheme

1: 5 percent / Na2CO3 / methanol; H2O / 12 h / Ambient temperature 2: 65 percent / m-chloroperbenzoic acid (MCPBA) / CH2Cl2 / 12 h / Ambient temperature View Scheme