1: 88 percent / LiAlH4 / tetrahydrofuran / 0.5 h / 0 °C 2: 90 percent / CF3COOH / CH2Cl2 / 0.5 h / Ambient temperature 3: 1) HgCl2, CaCO3 2) Na2S*9H2O / 1) CH3CN, H2O, r.t., 1 h, 2) CHCl3, r.t., 1 h View Scheme