Ethyl 4-(5-bromopyridin-2-yl)-2-methyl-2-(methylsulfonyl)butanoate → 4-(5-Bromopyridin-2-yl)-2-methyl-2-(methylsulfonyl)butanoic acid

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The title compound (1740 mg, 93%) was prepared from ethyl 4-(5-bromopyridin-2-yl)-2-methyl-2-(methylsulfonyl)butanoate (2025 mg, 5.6 mmol) by a procedure analogous to that described for the preparation of compound (II) 4-(6-bromophenyl-3-yl)-2-methyl-2-(methylsulfonyl)butanoic acid, Preparation 2, step 3. MS (LCMS) m/z 336.1 (M+1). 1H NMR (400 MHz, METHANOL-d4) δ ppm 1.63 (s, 3H) 2.25 (ddd, J=13.27, 11.71, 5.07 Hz, 1H) 2.58 (ddd, J=13.27, 11.32, 5.07 Hz, 1H) 2.70-2.81 (m, 1H) 2.88-2.99 (m, 1H) 3.10 (s, 3H) 7.27 (d, J=8.20 Hz, 1H) 7.86-7.92 (m, 1H) 8.53 (d, J=1.95 Hz, 1H).

Provenance & Evidence