反应详情

2-[(1S,4S)-5-Methyl-2,5-diazabicyclo[2.2.1]hept-2-yl]-5-nitrotoluene (14.2 g), as prepared above in Paragraph D, was dissolved in EtOH (50 mL), transferred to a Parr hydrogenation flask. Pd/C (1.5 g) was introduced to above flask and subjected to hydrogenation at 30 psi for 2 h. The reaction mixture was filtered through Celite and the filter cake was washed further with EtOH (300 mL). Concentration of the filtrate provided 3-Methyl-4-[(1S,4S)-5-methyl-2,5-diazabicyclo[2.2.1]hept-2-yl]aniline as a white-tan solid (11.7 g, 86%); 1H NMR (DMSO-d6): δ 6.58 (d, 1H, J=8.8 Hz), 6.34 (s, 1H), 6.27 (d, 1H, J=8.8 Hz), 4.46 (s, 2H), 3.61 (s, 1H), 3.24 (s, 1H), 3.16 (d, 1H, J=9.3 Hz), 2.93 (dd, 1H, J=1.8 and 9.3 Hz), 2.61 (qt, 2H, J=9.3 Hz), 2.26 (s, 3H), 2.05 (s, 3H), 1.70 (d, 1H, J=9.1 Hz), 1.63 (d, 1H, J=9.1 Hz). LCMS: purity: 97%; MS (m/e): 218 (MH+).

1. filtrationThe reaction mixture was filtered through Celite
2. washthe filter cake was washed further with EtOH (300 mL)