Lithium Hydroxide → 3-(5-Chloro-pyridin-2-yl)-5-(5-isopropyl-tetrazol-1-yl)-benzoic acid

Participants

Reaction Steps

3-(5-Chloro-pyridin-2-yl)-5-(5-isopropyl-tetrazol-1-yl)-benzoic acid methyl ester (1.84 g, 5.14 mmol) was dissolved in a mixture of MeOH (15 mL), water (2 mL) and THF (2 mL), and LiOH 308 mg, 12.86 mmol) was added. The reaction mixture was stirred at room temperature for 18 hours and then partitioned between water and 1N aqueous HCl. The combined organic layers were dried (MgSO4), filtered and concentrated under reduced pressure to give 1.70 g of 3-(5-chloro-pyridin-2-yl)-5-(5-isopropyl-tetrazol-1-yl)-benzoic acid, Mp=179.5-181.2° C., MS (M+H)=344.

Provenance & Evidence