反应详情

To a solution of 4-cyano-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carboxylic acid[4-bromo-2-(4,4-dimethyl-cyclohex-1-enyl)-phenyl]-amide (as prepared in the previous step, 350 mg, 0.661 mmol) in 5 mL of DCM (CH2Cl2) was added 0.15 mL of EtOH followed by 2.5 mL of TFA. After stirring at RT for 3 h, the mixture was treated with 10 mL of n-propanol and concentrated in vacuo. The residue was triturated with DCM to afford 253 mg (96%) of the title compound as a white solid. 1H-NMR (DMSO-d6; 400 MHz): δ 14.3 (s, 1H), 9.78 (s, 1H), 8.31 (s, 1H), 7.95 (d, 2H, J=8.6 Hz), 7.50 (dd, 2H, J=8.6, 2.3 Hz), 7.41 (d, 1H, J=2.3 Hz), 5.71 (m, 1H), 2.24 (m, 2H), 1.95 (m, 2H), 1.47 (m, 2H), 0.98 (s, 6H). Mass spectrum (ESI, m/z): Calcd. for C19H19BrN4O, 399.1 (M+H), found 399.1.

1. concentrationconcentrated in vacuo
2. customThe residue was triturated with DCM