Potassium Carbonate → 1-(5-Aminopyridin-2-yl)piperidin-4-ol

Participants

Reaction Steps

To a solution of 2-chloro-5-nitropyridine (LXV) (5.0 g, 31.5 mmol) in DMF (50 mL) was added piperidin-4-ol (LXXXIX) (3.5 g, 34.65 mmol) and K2CO3 (8.7 g, 63.0 mmol). The reaction was headed at 85° C. overnight. The solution was poured into ice water, stirred for 15 min and then filtered. The solid was washed with cold water and dried under vacuum to produce 1-(5-aminopyridin-2-yl)piperidin-4-ol (XC) as a yellow solid (6.62 g, 29.67 mmol, 94.2% yield). 1H NMR (DMSO-d6) δ ppm 1.34-1.42 (m, 2H), 1.77-1.83 (m, 2H), 3.40-3.56 (m, 2H), 3.76-3.83 (m, 1H), 4.12 (brd, 2H), 4.81 (d, J=4 Hz, 1H), 6.94 (d, J=10 Hz, 1H), 8.17 (dd, J=10 Hz, J=3 Hz, 1H), 8.94 (d, J=3 Hz, 1H); ESIMS found for C10H13N3O3 m/z 224.1 (M+H).

Provenance & Evidence