TEA in acetonitrile 4 h; Ambient temperature;

1: 54.5 percent / TEA / acetonitrile / 4 h / Ambient temperature 2: 83.1 percent / hydrogen, 1 N aq.HCl / 10percent Pd-C / methanol / 5 h / 40 °C 3: 64.9 percent / TEA / methanol / Ambient temperature 4: 63.4 percent / NaBH4 / methanol / 5 h / Ambient temperature View Scheme

1: 54.5 percent / TEA / acetonitrile / 4 h / Ambient temperature 2: 83.1 percent / hydrogen, 1 N aq.HCl / 10percent Pd-C / methanol / 5 h / 40 °C 3: 55.8 percent / TEA / methanol / Ambient temperature 4: 58.9 percent / NaBH4 / methanol / 5 h / Ambient temperature View Scheme

1: 54.5 percent / TEA / acetonitrile / 4 h / Ambient temperature 2: 83.1 percent / hydrogen, 1 N aq.HCl / 10percent Pd-C / methanol / 5 h / 40 °C 3: 66.5 percent / TEA / methanol / Ambient temperature 4: 52 percent / NaBH4 / methanol / 5 h / Ambient temperature View Scheme

1: 54.5 percent / TEA / acetonitrile / 4 h / Ambient temperature 2: 83.1 percent / hydrogen, 1 N aq.HCl / 10percent Pd-C / methanol / 5 h / 40 °C 3: 48 percent / TEA / methanol / Ambient temperature 4: 56.6 percent / NaBH4 / methanol / 5 h / Ambient temperature View Scheme