Hydrochloric Acid → 4-{1-[(S)-4-(2,3-Dihydro-benzo[1,4]dioxin-2-yl)-benzyl]-azetidin-3-yl}-benzoic acid

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Reaction Steps

A solution of 4-{1-[(S)-4-(2,3-Dihydro-benzo[1,4]dioxin-2-yl)-benzyl]-azetidin-3-yl}-benzoic acid methyl ester (prepared from Intermediate A and 4-Azetidin-3-yl-benzoic acid methyl ester according to General Method G) (504 mg, 1.21 mmol) and lithium hydroxide monohydrate (210 mg, 5.0 mmol) in 1,4-dioxane (10 mL) and water (1.0 mL) is stirred at 50° C. for 16 h. The mixture is neutralized with 1M HCl and concentrated. The residue is triturated with water to give the title compound 254 as a solid. (LC/MS method 16: ES+ m/z 402.5 [M+H]+, Rt=2.70 min)

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