Lithium borohydride → {9-Chloro-1-[6-(dimethylamino)-4-methylpyridin-3-yl]-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazol-6-yl}methanol

Participants

Reaction Conditions

Reaction Steps

Lithium borohydride (265 mg, 12.2 mmol) was added to a stirred solution of methyl 9-chloro-1-[6-(dimethylamino)-4-methylpyridin-3-yl]-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carboxylate (1.22 g, 3.05 mmol) in tetrahydrofuran (20 ml) at room temperature, and the mixture was stirred at 40° C. for 24 hr. The reaction was quenched by aqueous saturated ammonium chloride at 0° C., concentrated in vacuo and the precipitate was collected by filtration, washed with water, diisopropyl ether to give the title compound as a colorless powder (1.13 g, 3.04 mmol, 99%).

Provenance & Evidence