1: 81.5 percent / (COCl)2, DMSO, Et3N / CH2Cl2 / 0.33 h / -60 - -50 °C 2: H2 / 10percent Pd-C / aq. ethanol / Ambient temperature 3: 87 percent Chromat. / 700 °C View Scheme

1: H2 / 10percent Pd-C / aq. ethanol / Ambient temperature 2: 87 percent Chromat. / 700 °C View Scheme

T=700°C;

T=500°C;