1: 1.) ClC(S)OPh, NaHCO3, 2.) Et3N / 1.) THF, H2O, room temperature, 15 h, 2.) MeOH, room temperature, 22 h 2: 1.) LiOH*H2O, 2.) HCl / 1.) THF, H2O, room temperature, 18 h, 5.) CH2Cl2, room temperature, 15 min View Scheme

sodium carbonate in tetrahydrofuran; water 1.5 h; Ambient temperature;

1: hydrogenchloride 2: sodium hydrogencarbonate / tetrahydrofuran; water View Scheme

sodium hydrogencarbonate in tetrahydrofuran; water