Lithium Hydroxide → 3-Chloro-4-[2-(2-chloro-pyridin-4-yl)-3,3,3-trifluoro-2-hydroxy-1-methyl-propyl]-benzoic acid

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Reaction Conditions

Reaction Steps

3-Chloro-4-[2-(2-chloro-pyridin-4-yl)-3,3,3-trifluoro-2-hydroxy-1-methyl-propyl]-benzoic acid methyl ester (Example 135, 62 mg) in THF (1.5 mL) and MeOH (0.3 mL) was treated with 1M aqueous LiOH (0.228 mL) and stirred for 2 h at 65° C. (bath-temperature). The organic solvents were evaporated in vacuo and the residue was diluted with water (2 mL) and acidified with 1M aqueous HCl (0.3 mL). The precipitate was filtered and dried under high vacuum, leading to the title compound as white solid (54 mg). MS (m/e)=392.2 (M−H).

Provenance & Evidence