Hydrochloric Acid → 1-(6-Methoxypyridazin-3-yl)piperidin-4-amine

Participants

Reaction Conditions

Reaction Steps

[1-(6-Methoxy-pyridazin-3-yl)-piperidin-4-yl]-carbamic acid tert-butyl ester (0.37, 1.2 mmol) was dissolved in THF:MeOH 9:1 (15 ml) and HCl in 1,4-dioxane (4M, 1.2 ml, 4.8 mmol) was added. The reaction mixture was heated to 60° C. with for 3 h. The solvent was evaporated to yield the title compound (0.35 g, 100%) as the dihydrochloric salt. 1H-NMR (CD3OD, 500 MHz): δ 8.04 (d, 1H), 7.57 (d, 1H), 4.34-4.26 (m, 2H), 4.00 (s, 3H), 3.62-3.55 (m, 1H), 3.50-3.40 (m, 2H), 2.30-2.23 (m, 2H), 1.90-1.79 (m, 2H); 13C-NMR (CD3OD, 125 MHz): δ 159.7, 152.1, 129.8, 127.0, 62.1, 55.9, 46.2, 45.9, 45.7, 30.9, 30.3, 30.1.

Provenance & Evidence