Lithium borohydride → HCID 57786392, compound

Participants

Reaction Steps

To a solution of methyl 9-chloro-1-(2-chloro-4-methoxyphenyl)-1,2,3,4-tetrahydropyrimido[1,2-a]benzimidazole-6-carboxylate (694.5 mg, 1.50 mmol) in is tetrahydrofuran (4.0 mL) was added lithium tetrahydroborate (35.7 mg, 1.641 mmol) at 0° C. The reaction mixture was stirred at room temperature for 17 hrs. The starting material wasn't consumed completely. To the reaction mixture was added lithium tetrahydroborate (35.7 mg, 1.641 mmol) at 0° C. The reaction mixture was stirred at room temperature for 7 hrs. The solvent was removed by concentration. The precipitate was collected by filtration and washed with water to give the title compound as a colorless solid (144.0 mg, 0.381 mmol, 93%).

Provenance & Evidence