反应详情

温度

0 °C

A solution of LiAlH4 (Aldrich, 10.5 mL, 10.5 mmol, 1.0 M) in THF was added dropwise into a yellow solution of 5-(azidomethyl)-1-(2-tetrahydropyranyl)indazole (compound 109, 2.6 g, 10.1 mmol) in THF (30 mL) at 0° C. After stirring at 0° C. for 1 hour, NaOH (1.0M, 1.5 mL) was added. The reaction mixture was allowed to warm to room temperature. Ethyl acetate (100 mL) was added, and the suspension was filtered (Celite). The filter cake was washed with an addition portion of ethyl acetate (40 mL). Combined organic layers were evaporated under vacuum to give free amine 110 (2.14 g, 92%). MS (electrospray) 232.5 (M+1); 1H NMR (CDCl3) δ 1.61 (m, 3H), 2.02 (m, 2H), 2.50 (m, 1H), 2.83 (br s, 2H), 3.68 (m, 1H), 3.85 (s, 2H), 3.95 (m, 1H), 5.62 (d, 1H, J=9.2 Hz), 7.29 (d, 1H, J=8.8 Hz), 7.48 (d, 1H, J=8.8 Hz), 7.53 (s, 1H), 7.92 (s, 1H).

1. temperatureto warm to room temperature
2. filtrationthe suspension was filtered (Celite)
3. washThe filter cake was washed with an addition portion of ethyl acetate (40 mL)
4. customCombined organic layers were evaporated under vacuum