Ethyl Acetate → HCID 178424523, compound

Participants

Reaction Steps

A solution of 4-cyano-1-(2-trimethylsilanyl-ethoxymethyl)-1H-imidazole-2-carboxylic acid [4-(2-carbamoyl-ethyl)-2-(4,4-dimethyl-cyclohex-1-enyl)-phenyl]-amide (as prepared in the previous step, 160 mg, 0.307 mmol) and tetrabutylammonium fluoride (357 μL, 0.357 mmol, 1.0 M in THF) in 4.5 mL of THF was stirred at reflux for 1.5 h under Ar. After cooling to RT, the mixture was treated with EtOAc (40 mL), washed with saturated aq NaHCO3 (5 mL), brine (10 mL) and dried (Na2SO4). The organic layer was concentrated in vacuo and the residue was purified by flash chromatography on silica gel (5% MeOH/DCM) to give 29.2 mg (24%) of the title compound as a white solid. 1H-NMR (CD3OD; 400 MHz): δ 8.09 (d, 1H, J=8.3 Hz), 7.98 (s, 1H), 7.14 (dd, 1H, J=8.3, 2.1 Hz), 7.07 (d, 1H, J=2.1 Hz), 5.71 (m, 1H), 2.89 (t, 2H, J=7.7 Hz), 2.50 (t, 2H, J=7.7 Hz), 2.29 (m, 2H), 2.06 (m, 2H), 1.57 (t, 2H, J=6.3 Hz), 1.07 (s, 6H). Mass spectrum (ESI, m/z): Calcd. for C22H25N5O2, 392.2 (M+H). found 392.2.

Provenance & Evidence