potassium carbonate in butanone 48 h; Heating;

1: 80 percent / benzene / 24 h / Heating 2: 79 percent / KOH / ethanol / 1 h / 60 °C 3: 95 percent / 12M HCl / dimethylformamide; H2O / 45 h / Heating 4: 86 percent / dimethylformamide / 1 h / Heating 5: 94 percent / H2 / 10percent Pd/C / ethanol / Ambient temperature 6: NaNO2 / 1.) aq. H2SO4, 0-3 grad C then roomtemp. 30 min; 2.) 90 grad C, 30 min 7: 88 percent / K2CO3 / butan-2-one / 48 h / Heating View Scheme

1: 95 percent / KOH / ethanol / 3 h / Ambient temperature 2: 86 percent / dimethylformamide / 1 h / Heating 3: 94 percent / H2 / 10percent Pd/C / ethanol / Ambient temperature 4: NaNO2 / 1.) aq. H2SO4, 0-3 grad C then roomtemp. 30 min; 2.) 90 grad C, 30 min 5: 88 percent / K2CO3 / butan-2-one / 48 h / Heating View Scheme

1: 79 percent / KOH / ethanol / 1 h / 60 °C 2: 95 percent / 12M HCl / dimethylformamide; H2O / 45 h / Heating 3: 86 percent / dimethylformamide / 1 h / Heating 4: 94 percent / H2 / 10percent Pd/C / ethanol / Ambient temperature 5: NaNO2 / 1.) aq. H2SO4, 0-3 grad C then roomtemp. 30 min; 2.) 90 grad C, 30 min 6: 88 percent / K2CO3 / butan-2-one / 48 h / Heating View Scheme

1: 94 percent / H2 / 10percent Pd/C / ethanol / Ambient temperature 2: NaNO2 / 1.) aq. H2SO4, 0-3 grad C then roomtemp. 30 min; 2.) 90 grad C, 30 min 3: 88 percent / K2CO3 / butan-2-one / 48 h / Heating View Scheme

1: 95 percent / 12M HCl / dimethylformamide; H2O / 45 h / Heating 2: 86 percent / dimethylformamide / 1 h / Heating 3: 94 percent / H2 / 10percent Pd/C / ethanol / Ambient temperature 4: NaNO2 / 1.) aq. H2SO4, 0-3 grad C then roomtemp. 30 min; 2.) 90 grad C, 30 min 5: 88 percent / K2CO3 / butan-2-one / 48 h / Heating View Scheme

1: 86 percent / dimethylformamide / 1 h / Heating 2: 94 percent / H2 / 10percent Pd/C / ethanol / Ambient temperature 3: NaNO2 / 1.) aq. H2SO4, 0-3 grad C then roomtemp. 30 min; 2.) 90 grad C, 30 min 4: 88 percent / K2CO3 / butan-2-one / 48 h / Heating View Scheme