2-Chloro-5-nitrobenzoic acid → 2-Methoxy-5-nitrobenzoic acid

참여 물질

반응 단계

To a solution of 2-chloro-5-nitrobenzoic acid (3.0 g, 0.14 mol) in methanol (500 mL) was added sodium methoxide (28.1 g, 0.520 mol). The reaction mass was refluxed for 15 h. Excess of solvent was removed under vacuum and the reaction mass was diluted with water and acidified with dilute HCl to obtain solid which was filtered off to afford 25.0 g of desired product. 1H NMR (300 MHz, DMSO d6): δ 3.96 (s, 3H), 7.36 (d, J=9.3 Hz, 1H), 8.37 (d, J=9.0 Hz, 1H), 8.45 (s, 1H), 13.32 (br s, 1H)); MS (m/z): 198.25 (M+H)+.

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