Sodium Hydroxide → HCID 178467362, compound

Participants

Reaction Steps

A solution of ethyl 2-ethoxy-1-[[2′-(1H-tetrazol-5-yl)-biphenyl-4-yl]methyl]benzimidazole-7-carboxylate (0.24 g) and 1N NaOH (1.5 ml) in ethanol (4 ml) was stirred at 80° C for one hour. The reaction mixture was concentrated, and the concentrate was extracted with water and ethyl acetate. The aqueous layer was adjusted to pH 3-4 with 1N—HCl to give crystals. Recrystallization of the crystals from ethyl acetate-methanol afforded colorless crystals (0.15 g, 67%), m.p. 183-185° C.

Provenance & Evidence