反应详情

To a solution of 4-cyano-1H-imidazole-2-carboxylic acid [5-acetyl-2-(4,4-dimethyl-cyclohex-1-enyl)-phenyl]-amide (as prepared in Example 31, step (d), 30.0 mg, 0.0828 mmol) in 2 mL of THF at −78° C. under Ar was added methyl magnesium chloride (58 μL, 0.17 mmol, 3.0 M in THF). The resulting mixture was warmed to RT and stirred for 0.5 h. Treated with 10 mL of saturated NH4Cl aqueous solution followed by 10 mL of brine, the mixture was extracted with EtOAc (2×20 mL). The combined organic layers were dried with Na2SO4. The solvent was evaporated under reduced pressure and the residue was purified by flash chromatography on silica gel (2-3% MeOH/DCM) to give 29.0 mg (93%) of the title compound as a white solid. 1H-NMR (DMSO-d6; 400 MHz): δ 14.22 (s, 1H), 9.76 (s, 1H), 8.32 (s, 1H), 8.12 (d, 1H, J=1.8 Hz), 7.25 (dd, 1H, J=8.1, 1.8 Hz), 7.14 (d, 1H, J=8.1 Hz), 5.65 (m, 1H), 2.16-2.29 (m, 2H), 1.87-1.98 (m, 2H), 1.47 (t, 2H, J=6.2 Hz), 1.43 (s, 6H), 0.99 (s, 6H). Mass spectrum (ESI, m/z): Calcd. for C22H26N4O2, 379.2 (M+H), found 379.0.

1. extractionthe mixture was extracted with EtOAc (2×20 mL)
2. dry with materialThe combined organic layers were dried with Na2SO4
3. customThe solvent was evaporated under reduced pressure
4. customthe residue was purified by flash chromatography on silica gel (2-3% MeOH/DCM)