反应详情

A cooled (0° C.) mixture comprising 4-benzylamino-3-methyl-cyclohexanecarboxylic acid ethyl ester (0.90 g, 3.27 mmol) in THF (50 mL) is treated with LiAlH4 (4.09 mL, 8.08 mmol of a 2M solution in THF) and the reaction mixture is stirred at RT for 2 hours. The reaction is quenched with water (5 mL), NaOH (5 mL) followed by water (20 mL). The resulting precipitate is removed by filtration and washed with EtOAc. The organic phase is washed with water, brine, dried (MgSO4) and concentrated in vacuo to afford the title compound which is used in the next step without further purification. 1H NMR (400 MHz, DMSO-d6) δ 7.30 (4H, m), 7.19 (1H, m) 4.31 (1H, t), 3.68 (2H, m), 3.29 (0.4H, t), 3.15 (1.6H, t), 2.45 (1H, m), 2.18 (0.2H, m), 2.06 (0.8H, m), 1.69 (2H, m), 1.52 (3H, m), 1.27 (2H, m), 1.03 (1H, m), 0.90 (0.6H, d), 0.88 (2.4H, d), 0.80 (1H, m).

1. customThe reaction is quenched with water (5 mL), NaOH (5 mL)
2. customThe resulting precipitate is removed by filtration
3. washwashed with EtOAc
4. washThe organic phase is washed with water, brine
5. dry with materialdried (MgSO4)
6. concentrationconcentrated in vacuo