basic copper carbonate powder T=200 - 220°C; 2 h;

1: 1.) sodium ethoxide / 1.) ethanol, reflux, 0.5 h, 2.) reflux, 3 h 2: 73 percent / 12 h / 210 - 230 °C 3: 71 percent / sodium chloride, dimethyl sulfoxide / H2O / 9 h / 155 °C 4: 54 percent / 20percent aq. KOH / ethanol / 4 h / Heating 5: 62 percent / copper carbonate / 2 h / 200 - 220 °C View Scheme

1: 73 percent / 12 h / 210 - 230 °C 2: 71 percent / sodium chloride, dimethyl sulfoxide / H2O / 9 h / 155 °C 3: 54 percent / 20percent aq. KOH / ethanol / 4 h / Heating 4: 62 percent / copper carbonate / 2 h / 200 - 220 °C View Scheme

1: 20 percent / NaH, cuprous bromide / pyridine; paraffin 2: 71 percent / sodium chloride, dimethyl sulfoxide / H2O / 9 h / 155 °C 3: 54 percent / 20percent aq. KOH / ethanol / 4 h / Heating 4: 62 percent / copper carbonate / 2 h / 200 - 220 °C View Scheme

1: 54 percent / 20percent aq. KOH / ethanol / 4 h / Heating 2: 62 percent / copper carbonate / 2 h / 200 - 220 °C View Scheme

1: 71 percent / sodium chloride, dimethyl sulfoxide / H2O / 9 h / 155 °C 2: 54 percent / 20percent aq. KOH / ethanol / 4 h / Heating 3: 62 percent / copper carbonate / 2 h / 200 - 220 °C View Scheme

n-butyllithium 1.) ether, -70 deg C, 45 min, 2.) 0.5 h; Yield given. Multistep reaction;

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