Cesium carbonate → Ethyl 2-(6-(4-Cyclopentyl-3-(trifluoromethyl)benzyloxy)-2,3-dihydro-1H-benzo[d]pyrrolo[1,2-a]imidazol-3-yl)acetate

Participants

Reaction Steps

Ethyl 2-(6-hydroxy-2,3-dihydro-1H-benzo[d]pyrrolo[1,2-a]imidazol-3-yl)acetate (0.1 g, 0.384 mmol) was dissolved in DMF (1.0 mL) and cesium carbonate (0.150 g, 0.461 mmol) and 4-(chloromethyl)-1-cyclopentyl-2-(trifluoromethyl)benzene (0.111 g, 0.423 mmol) were added. The reaction mixture was stirred at room temperature for 1.5 h and then warmed to 40° C. After stirring for 1 h, the reaction mixture was diluted with water and extracted three times with EtOAc. The combined extracts were dried over sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by column chromatography to provide the title compound (126 mg). LCMS m/z=487.4 [M+H]+; 1H NMR (400 MHz, CDCl3) δ ppm 1.26 (t, J=7.2 Hz, 3H), 1.55-1.65 (m, 2H), 1.67-1.78 (m, 2H), 1.81-1.91 (m, 2H), 2.04-2.14 (m, 2H), 2.36-2.47 (m, 1H), 2.62 (dd, J=16.4, 9.7 Hz, 1H), 2.97-3.07 (m, 1H), 3.16 (dd, J=16.8, 3.8 Hz, 1H), 3.33-3.43 (m, 1H), 3.64-3.74 (m, 1H), 3.97-4.05 (m, 1H), 4.09-4.21 (m, 3H), 5.09 (s, 2H), 6.87 (d, J=2.4 Hz, 1H), 6.93 (dd, J=8.6, 2.4 Hz, 1H), 7.49 (d, J=8.3 Hz, 1H), 7.56-7.61 (m, 2H), 7.68 (s, 1H).

Provenance & Evidence