反应详情

A mixture of 2-nitro-3-(piperidin-1-yl)aniline (CXXII) (1.64 g, 6.9 mmol, 1 eq) and Pd/C (0.50 g) in MeOH (20 mL) was stiffed at room temperature under 30 psi H2 overnight. After the starting material was consumed completely, the mixture was filtered through a Celite pad and the filtrate was concentrated in vacuo to give the 3-(piperidin-1-yl)benzene-1,2-diamine (CXXIII) (1.1 g, 5.75 mmol, 76% yield) as a yellow solid. 1H NMR (CDCl3, 400 MHz) δ ppm 1.59 (brs, 2H), 1.73 (quin, J=5.6 Hz, 4H), 2.84 (brs, 4H), 3.50 (brs, 4H), 6.52 (dd, J=6.4 Hz, J=1.6 Hz, 1H), 6.59-6.75 (m, 2H); ESIMS found for C11H17N3 m/z 192 (M+H).

1. customwas stiffed at room temperature under 30 psi H2 overnight
2. customAfter the starting material was consumed completely
3. filtrationthe mixture was filtered through a Celite pad
4. concentrationthe filtrate was concentrated in vacuo