N,N-dimethyl-aniline; trichlorophosphate 1.) 30 min, 2.) reflux, 1 h;

1: 83 percent / conc. H2SO4, fuming HNO3 (d 1.5) / 0 °C 2: 91 percent / fuming HNO3 (d 1.5) / 4 h / 100 °C 3: 97 percent / conc. H2SO4 / 9 h / Heating 4: 74 percent / POCl3, PhNMe2 / 1.) 30 min, 2.) reflux, 1 h View Scheme

1: 91 percent / fuming HNO3 (d 1.5) / 4 h / 100 °C 2: 97 percent / conc. H2SO4 / 9 h / Heating 3: 74 percent / POCl3, PhNMe2 / 1.) 30 min, 2.) reflux, 1 h View Scheme

1: 97 percent / conc. H2SO4 / 9 h / Heating 2: 74 percent / POCl3, PhNMe2 / 1.) 30 min, 2.) reflux, 1 h View Scheme

hydrogen; magnesium oxide; 5-palladium/activated carbon in 1,4-dioxane T=20°C; P=2812.78 Torr; 5 h;