Potassium trimethylsilanolate → 3-{3-(4-tert-Butylphenyl)-3-[4-(2H-tetrazol-5-ylcarbamoyl)benzyl]ureido}benzoic acid

Beteiligte Stoffe

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Reaktionsschritte

To the above resin bound 3-{3-(4-tert-butylphenyl)-3-[4-(2H-tetrazol-5-ylcarbamoyl)benzyl]ureido}benzoic acid methyl ester was added a solution of potassium trimethylsilanolate in THF (1M, 5 mL). The mixture was shaken 4 hours at 25° C., filtered and allowed to react with a solution of acetic acid in THF (20%, 5 mL) at 25° C. overnight. Filtration followed by washing of the resin with dichloromethane (2×10 mL) afforded the resin bound title compound.

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