反应详情

Combine (R)-cyclopropanecarboxylic acid[6-cyano-9-(3-fluorobenzyl)-2,3,4,9-tetrahydro-1H-carbazol-3-yl]amide (Example 194) (3.70 g, 9.55 mmol) and nickel-aluminum catalyst (10.0 g) in 90% formic acid and heat at 90-100° C. for 18 h. Dilute with methanol, filter to remove catalyst, and concentrate the filtrate in vacuo. Neutralize the filtrate by addition of solid NaHCO3 after taking up in ethyl acetate/water. Dry the ethyl acetate portion over Na2SO4, filter, and evaporate to give 3.53 g (95%) of the title compound as a foam. MS (ES): n/z 391 (M+1); 1H NMR(DMSO-d6): δ 9.90 (s, 1H), 8.19 (d, 1H), 8.04 (s, 1H), 7.61 (d, 1H), 7.57 (d, 1H), 7.37 (dd, 1H), 7.15 (m, 1H), 6.81-6.92 (m, 2H), 5.44 (s, 2H), 4.08 (m, 1H), 3.03 (dd, 1H), 2.57-2.82 (m, 4H), 2.00 (m, 1H), 1.82 (m, 1H), 1.59 (m, 1H), 0.65 (m, 4H).

1. filtrationfilter
2. customto remove catalyst
3. concentrationconcentrate the filtrate in vacuo
4. additionNeutralize the filtrate by addition of solid NaHCO3
5. dry with materialDry the ethyl acetate portion over Na2SO4
6. filtrationfilter
7. customevaporate