Oxonereg; in N,N-dimethyl-formamide T=20°C; 2 h;

1: 2-nitro-4,5-dimethylaniline With 5 palladium on charcoal; ammonium formate in toluene T=120°C; 1 h; 2: 2-nitro-benzaldehyde in toluene T=4 - 20°C; 16 h;

1: H2 / methanol / 2 h / 20 °C / 1551.49 Torr 2: 87 percent / oxone (R) / dimethylformamide / 2 h / 20 °C View Scheme