Sodium Hydroxide → 3-chloro-4-(2-methylpropyl)Benzoic acid

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A solution of ethyl 3-chloro-4-(2-methylpropyl)benzoate (D17) (1.76 g, 7.33 mmol), and aqueous sodium hydroxide (2M, 3.70 mL, 7.4 mmol) in ethanol (30 mL) was heated at 40° C. for 3 h. The reaction mixture was concentrated in vacuo and the residue partitioned between ethyl acetate (100 mL) and water (100 mL), the latter acidified with 2M HCl (4 mL). The aqueous layer was extracted with ethyl acetate (100 mL) and the combined organic extracts dried (phase separator) and concentrated in vacuo to give the title compound as a white solid (1.35 g, 6.36 mmol). MS (ES): C11H1335ClO2 requires 212; found 211 (M−H+).

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