PPA 4 h; Ambient temperature;

1: (COCl)2 / CH2Cl2; dimethylformamide / Ambient temperature 2: triethylamine / CH2Cl2 / Ambient temperature 3: 97 percent / 37 percent HCl, water, H2 / 10 percent Pd/C / methanol / 2585.7 Torr / Ambient temperature; Parr hydrogenator 4: 91 percent / diethyl ether / 24 h / Ambient temperature 5: 94 percent / PPA / 4 h / Ambient temperature View Scheme

1: 97 percent / 37 percent HCl, water, H2 / 10 percent Pd/C / methanol / 2585.7 Torr / Ambient temperature; Parr hydrogenator 2: 91 percent / diethyl ether / 24 h / Ambient temperature 3: 94 percent / PPA / 4 h / Ambient temperature View Scheme

1: AlCl3 / 1,2-dichloro-ethane / 24 h / Ambient temperature 2: (COCl)2 / CH2Cl2; dimethylformamide / Ambient temperature 3: triethylamine / CH2Cl2 / Ambient temperature 4: 97 percent / 37 percent HCl, water, H2 / 10 percent Pd/C / methanol / 2585.7 Torr / Ambient temperature; Parr hydrogenator 5: 91 percent / diethyl ether / 24 h / Ambient temperature 6: 94 percent / PPA / 4 h / Ambient temperature View Scheme

1: 91 percent / diethyl ether / 24 h / Ambient temperature 2: 94 percent / PPA / 4 h / Ambient temperature View Scheme