1: 82 percent / lithium 1,1-dimethylethanethiolate / hexamethylphosphoric acid triamide / 2 h / 70 °C 2: 85 percent / H2 / 5percent Pd-C / ethyl acetate / Ambient temperature 3: 33 percent / sodium borohydride / methanol / 3 h View Scheme

1: 82 percent / lithium 1,1-dimethylethanethiolate / hexamethylphosphoric acid triamide / 2 h / 70 °C 2: 85 percent / H2 / 5percent Pd-C / ethyl acetate / Ambient temperature View Scheme

1: 82 percent / lithium 1,1-dimethylethanethiolate / hexamethylphosphoric acid triamide / 2 h / 70 °C 2: 85 percent / H2 / 5percent Pd-C / ethyl acetate / Ambient temperature 3: 7 percent / sodium borohydride / methanol / 3 h View Scheme