Sodium triacetoxyborohydride → HCID 178450548, compound

Participants

Reaction Conditions

Reaction Steps

In 1,2-dichloroethane (14 ml)/acetic acid (7 ml) was dissolved methyl 7-[4-(2-butoxyethoxy)phenyl]-2,3-dihydro-1-benzazepine-4-carboxylate (0.70 g). To the solution were added tetrazole-5-carbaldehyde (0.31 g) and sodium triacetoxyborohydride (1.5 g), and the mixture was stirred at 40° C. for 18 hours. The mixture was cooled to room temperature, and the solvent was removed under reduced pressure. The resulting residue was added to water, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried with magnesium sulfate. The solvent was removed under reduced pressure, and the resulting residue was purified with silica gel column chromatography (ethyl acetate/ethanol=15:1) to give methyl 7-[4-(2-butoxyethoxy)phenyl]-1-(tetrazol-5-ylmethyl)-2,3-dihydro-1-benzazepine-4-carboxylate (0.67 g).

Provenance & Evidence