Sodium Hydroxide → HCID 178458915, compound

Participants

Reaction Conditions

Reaction Steps

A solution of ethyl 2-propoxy-1-[[2'-(1H-tetrazol-5-yl)-biphenyl-4-yl]methyl]benzimidazole-7-carboxylate (0.23 g) in ethanol (4 ml) containing 1N-NaOH (1.5 ml) was heated at 80° C. for 2 hours. The reaction mixture was concentrated to dryness and the residue was extracted with water and ethyl acetate. The aqueous layer was adjusted to pH 3-4 with 1N-HCl to give crystals. Recrystallization from ethyl acetate--methanol afforded colorless crystals (0.15 g, 69%), m.p. 174-175° C.

Provenance & Evidence