copper pyrolysis;

1: 85 percent / sulfuric acid / benzene / 40 h / Heating 2: 83 percent / C2H5ONa / ethanol; CHCl3 / 1) C2H5ONa, C2H5OH, 0 deg C, 30 min, 2) chloroform, room temperature, 15 h 3: 1) C2H5ONa 2) hydrochloric acid / 1) reflux, 14 h, 2) reflux, 3 h 4: 50 percent / 48percent aq. HBr / 19 h / Heating 5: 81 percent / K2CO3 / acetone / 2 h / Heating 6: 47 percent / C2H5ONa / toluene / 14 h / Heating 7: 90 percent / Cu powder / pyrolysis View Scheme

1: 83 percent / C2H5ONa / ethanol; CHCl3 / 1) C2H5ONa, C2H5OH, 0 deg C, 30 min, 2) chloroform, room temperature, 15 h 2: 1) C2H5ONa 2) hydrochloric acid / 1) reflux, 14 h, 2) reflux, 3 h 3: 50 percent / 48percent aq. HBr / 19 h / Heating 4: 81 percent / K2CO3 / acetone / 2 h / Heating 5: 47 percent / C2H5ONa / toluene / 14 h / Heating 6: 90 percent / Cu powder / pyrolysis View Scheme

1: 81 percent / K2CO3 / acetone / 2 h / Heating 2: 47 percent / C2H5ONa / toluene / 14 h / Heating 3: 90 percent / Cu powder / pyrolysis View Scheme

1: 1) C2H5ONa 2) hydrochloric acid / 1) reflux, 14 h, 2) reflux, 3 h 2: 50 percent / 48percent aq. HBr / 19 h / Heating 3: 81 percent / K2CO3 / acetone / 2 h / Heating 4: 47 percent / C2H5ONa / toluene / 14 h / Heating 5: 90 percent / Cu powder / pyrolysis View Scheme

1: 47 percent / C2H5ONa / toluene / 14 h / Heating 2: 90 percent / Cu powder / pyrolysis View Scheme

1: 50 percent / 48percent aq. HBr / 19 h / Heating 2: 81 percent / K2CO3 / acetone / 2 h / Heating 3: 47 percent / C2H5ONa / toluene / 14 h / Heating 4: 90 percent / Cu powder / pyrolysis View Scheme

1: 79 percent / KOH / ethanol / 3 h / Heating 2: 90 percent / Cu powder / pyrolysis View Scheme

copper Heating;