反应详情

To a solution of 9-(2-benzyloxy-ethyl)-6-fluoro-2,3,4,9-tetrahydro-1H-carbazole-4-carboxylic acid diethylamide (36) (600 mg, 1.4 mmol) in methanol (40 mL) was added a slurry of Pd/C (100 mg) in methanol (5 mL). The mixture was placed on the Parr hydrogenator and shaken for 24 h under a hydrogen atmosphere. The reaction was filtered through a pad of celite, washed with methanol and concentrated in vacuo to afford 460 mg (80%) of 6-fluoro-9-(2-hydroxy-ethyl)-2,3,4,9-tetrahydro-1H-carbazole-4-carboxylic acid diethylamide (37) as a yellow oil which was used in the next step without purification. The structure was confirmed by 1H NMR (300 MHz, MeOD-d3) δH 1.18 (3H, t, J=9 Hz, N(CH2CH3)2), 1.35 (3H, t, J=9 Hz, N(CH2CH3)2), 1.80-2.20 (4H, m, 2- and 3-CH2), 2.69-3.88 (2H, m, 1-CH2), 3.40-3.86 (6H, m, N(CH2CH3)2 and NCH2CH2OH), 4.03-4.22 (3H, m, NCH2CH2OH and 4-CH), 6.75-6.95 (2H, m, NCCHCHCFCH), and 7.05-7.15 (1H, m, NCCHCHCFCH.

1. filtrationThe reaction was filtered through a pad of celite
2. washwashed with methanol
3. concentrationconcentrated in vacuo