Methyl 2-bromo-3-nitrobenzoate → Methyl 3-amino-2-bromobenzoate

関与物質

反応手順

Hydrogen gas was passed through a solution of methyl 2-bromo-3-nitrobenzoate (0.20 g, 0.77 mM) and 0.1 g of 3% sulfided platinum on carbon in 25 mL ethyl acetate for 24 hours at room temperature. The catalyst was removed by filtration through celite. Concentration of the filtrate afforded 0.175 g (99%) of methyl 2-bromo-3-aminobenzoate as a yellow oil. 1H NMR (CDCl3) δ7.15 (t, 1H, J=8 Hz), 7.1 (dd, 1H, J=1 and 8 Hz), 6.8 (dd, 1H, J=1 and 8 Hz), and 3.95 (s, 3H). IR (CHCl3, cm−1) 3550, 3380, 2980, 2900, 1729, 1613, 1465, 1451, 1434, 1324, 1266, and 1025. MS (FD) m/e 230, 232.

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