反应详情

To a stirred solution of cycloheptanamine (8.62 g) in methanol (20 mL) was added 2,2-dimethoxyacetaldehyde (11.49 mL) and the mixture stirred at room temperature for 5 h. Palladium on carbon 10% (1 g) was added and the mixture hydrogenated at 5 bar for 16 h. It was filtered and concentrated under vacuum to give N-(2,2-dimethoxyethyl)cycloheptanamine as an oil (15.26 g). 1H NMR (300 MHz, CDCl3) δ 4.47 (t, J=5.6 Hz, 1H), 3.39 (s, 6H), 2.73 (d, J=5.6 Hz, 2H), 2.67-2.55 (m, 1H), 1.90-1.25 (m, 12H).

1. waitthe mixture hydrogenated at 5 bar for 16 h
2. filtrationIt was filtered
3. concentrationconcentrated under vacuum