HCID 57786062, compound → HCID 57786359, compound

Participants

Reaction Steps

To a solution of 1-(4-bromo-2-chlorophenyl)-9-chloro-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carbaldehyde (1.00 g, 2.352 mmol) in tetrahydrofuran (12.0 mL) was added ethylmagnesium bromide (3.0 M solution in diethyl ether, 1.18 mL, 3.528 mmol) at 0° C. The reaction mixture was stirred at room temperature for 5 hrs. The mixture was quenched with aqueous saturated ammonium chloride and extracted with ethyl acetate (×3). The combined organic layer was washed with brine, dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo. The resulting solid was washed with diisopropyl ether/ethyl acetate to give the title compound as a colorless solid (925.8 mg, 2.034 mmol, 87%).

Provenance & Evidence