ammonia in benzene Ambient temperature;

1: 87 percent / K2CO3 / 0.08 h / 125 °C 2: 81 percent / P2O5, 85percent aq H3PO4 / toluene / 2 h / 100 °C / Heating 3: 92 percent / NaBH4 / ethanol / 4 h / Heating 4: 94 percent / HCl,CaCl2 / CCl4 / 1.5 h / Ambient temperature 5: 72 percent / NaH / benzene / 1. 3 h reflux; 2. room temp., overnight 6: 79 percent / KOH / ethanol; H2O / 6 h / Heating 7: 95 percent / Piperidine / pyridine / 2.5 h / Heating 8: 88 percent / SOCl2 / benzene / 1. 60-70 deg C, 2.5 h; 2. 0.5 h reflux 9: 99 percent / NH3 / benzene / Ambient temperature View Scheme

1: 87 percent / K2CO3 / 0.08 h / 125 °C 2: 81 percent / P2O5, 85percent aq H3PO4 / toluene / 2 h / 100 °C / Heating 3: 92 percent / NaBH4 / ethanol / 4 h / Heating 4: 94 percent / HCl,CaCl2 / CCl4 / 1.5 h / Ambient temperature 5: 72 percent / NaH / benzene / 1. 3 h reflux; 2. room temp., overnight 6: 79 percent / KOH / ethanol; H2O / 6 h / Heating 7: 95 percent / Piperidine / pyridine / 2.5 h / Heating 8: 88 percent / SOCl2 / benzene / 1. 60-70 deg C, 2.5 h; 2. 0.5 h reflux 9: 99 percent / NH3 / benzene / Ambient temperature View Scheme

1: 94 percent / HCl,CaCl2 / CCl4 / 1.5 h / Ambient temperature 2: 72 percent / NaH / benzene / 1. 3 h reflux; 2. room temp., overnight 3: 79 percent / KOH / ethanol; H2O / 6 h / Heating 4: 95 percent / Piperidine / pyridine / 2.5 h / Heating 5: 88 percent / SOCl2 / benzene / 1. 60-70 deg C, 2.5 h; 2. 0.5 h reflux 6: 99 percent / NH3 / benzene / Ambient temperature View Scheme

1: 72 percent / NaH / benzene / 1. 3 h reflux; 2. room temp., overnight 2: 79 percent / KOH / ethanol; H2O / 6 h / Heating 3: 95 percent / Piperidine / pyridine / 2.5 h / Heating 4: 88 percent / SOCl2 / benzene / 1. 60-70 deg C, 2.5 h; 2. 0.5 h reflux 5: 99 percent / NH3 / benzene / Ambient temperature View Scheme

1: 81 percent / P2O5, 85percent aq H3PO4 / toluene / 2 h / 100 °C / Heating 2: 92 percent / NaBH4 / ethanol / 4 h / Heating 3: 94 percent / HCl,CaCl2 / CCl4 / 1.5 h / Ambient temperature 4: 72 percent / NaH / benzene / 1. 3 h reflux; 2. room temp., overnight 5: 79 percent / KOH / ethanol; H2O / 6 h / Heating 6: 95 percent / Piperidine / pyridine / 2.5 h / Heating 7: 88 percent / SOCl2 / benzene / 1. 60-70 deg C, 2.5 h; 2. 0.5 h reflux 8: 99 percent / NH3 / benzene / Ambient temperature View Scheme

1: 88 percent / SOCl2 / benzene / 1. 60-70 deg C, 2.5 h; 2. 0.5 h reflux 2: 99 percent / NH3 / benzene / Ambient temperature View Scheme

1: 95 percent / Piperidine / pyridine / 2.5 h / Heating 2: 88 percent / SOCl2 / benzene / 1. 60-70 deg C, 2.5 h; 2. 0.5 h reflux 3: 99 percent / NH3 / benzene / Ambient temperature View Scheme

1: 79 percent / KOH / ethanol; H2O / 6 h / Heating 2: 95 percent / Piperidine / pyridine / 2.5 h / Heating 3: 88 percent / SOCl2 / benzene / 1. 60-70 deg C, 2.5 h; 2. 0.5 h reflux 4: 99 percent / NH3 / benzene / Ambient temperature View Scheme

1: 92 percent / NaBH4 / ethanol / 4 h / Heating 2: 94 percent / HCl,CaCl2 / CCl4 / 1.5 h / Ambient temperature 3: 72 percent / NaH / benzene / 1. 3 h reflux; 2. room temp., overnight 4: 79 percent / KOH / ethanol; H2O / 6 h / Heating 5: 95 percent / Piperidine / pyridine / 2.5 h / Heating 6: 88 percent / SOCl2 / benzene / 1. 60-70 deg C, 2.5 h; 2. 0.5 h reflux 7: 99 percent / NH3 / benzene / Ambient temperature View Scheme