反应详情

To a cooled (0° C.) solution of sodium borohydride (12 mg, 0.32 mmol) in 2 ml of dry EtOH was added (S)-3-acetyl-N-(1-(3-(3-chloro-4-cyanophenyl)-1H-pyrazol-1-yl)butan-2-yl)-1H-pyrazole-5-carboxamide of Example 99 (66 mg, 0.16 mmol) as a solution in 3 ml of dry EtOH. Reaction mixture was stirred at RT overnight before being quenched by adding some water and 0.5 M HCl until pH was acidic. Solvents were evaporated and the evaporation residual was taken up in 5% MeOH in DCM, washed with 1 M NaHCO3 solution and water. Organic phase was dried over Na2SO4, filtered and evaporated to yield 64 mg (96%) of the title compound. 1H-NMR (400 MHz; CDCl3/MeOD): δ 1.00 (t, 3H), 1.48-1.65 (m, 5H), 4.29-4.43 (m, 3H), 4.94 (q, 1H), 6.59-6.62 (m, 2H), 7.52 (d, 1H), 7.67-7.72 (m, 1H), 7.78-7.82 (m, 1H), 7.99-8.01 (m, 1H).

1. customReaction mixture
2. custombefore being quenched
3. additionby adding some water and 0.5 M HCl until pH
4. customSolvents were evaporated
5. washwashed with 1 M NaHCO3 solution and water
6. dry with materialOrganic phase was dried over Na2SO4
7. filtrationfiltered
8. customevaporated