Potassium trimethylsilanolate → HCID 178440179, compound

Participants

Reaction Steps

A solution of methyl (E)-3-[4-(2,5-dimethyl-1H-pyrrol-1-yl)-2-propyl-1-[[2'-(1H-tetrazol-5-yl) 1,1'-biphenyl-4-yl]methyl]-1H-imidazol-5-yl]-2-propenoate (Example 52, 1.55 g, 3 mmol), and potassium trimethylsilanolate (0.96 g, 7.5 mmol) in dry THF (80 mL) was stirred at room temperature for 3 hours under an atmosphere of dry nitrogen. The resulting precipitate was collected by filtration, air dried, and then dissolved in water (50 mL). The free acid was precipitated out by the addition of 1N HCl and collected by filtration giving (E)-3-[4-(2,5-dimethyl-1H-pyrrol-1-yl)-2-propyl-1-[[2'-(1H-tetrazol-5-yl)-1,1'-biphenyl-4-yl]methyl]-1H-imidazol-5-yl]-2-propenoic acid (1.3 g, 83%) as a partial hydrate, mp 144 150° C.

Provenance & Evidence