1: 92 percent / DIBAL / diethyl ether / 3.5 h / Ambient temperature 2: 1.) NCS; 2.) alumina / 1.) methylene chloride, room temp., 6h; 2.) 0.33h View Scheme

1: 92 percent / DIBAL / diethyl ether / 3.5 h / Ambient temperature 2: 91 percent / H2 / Pd/C / ethanol / 6 h / 2585.7 Torr / Ambient temperature View Scheme