反应详情

To a solution of (2-nitrophenyl)-pyrimidin-2-yl-amine (13.2 g, 61.1 mmol) in a mixture of EtOAc (450 mL) and CH3OH (350 mL) was added Raney Nickle (16 g (water wet)) and the reaction mixture hydrogenated under 1 atm hydrogen at ambient temperature for 3 h. The catalyst was separated by filtration and the filtrate concentrated in vacuo to a red-brown solid which upon trituration with cold CH3OH (250 mL) gave the title compound (8.21 g, 44.1 mmol) as a grey solid: 1H NMR (CDCl3, 400 MHz): 8.38 (d, 2H, J=4.9 Hz), 7.37 (d, 1H, J=7.9 Hz), 7.08 (t, 1H), 7.00 (br s, 1H), 6.83 (m, 2H), 6.67 (t, 1H), 3.60 (br s, 2H); TLC (EtOAc/Hexanes(2:1)): Rf =0.33.

1. customThe catalyst was separated by filtration
2. concentrationthe filtrate concentrated in vacuo to a red-brown solid which upon trituration with cold CH3OH (250 mL)