(4-Methanesulfonamidophenyl)boronic acid → N-[4-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-5-yl)-phenyl]-methanesulfonamide

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Reaktionsschritte

N-[4-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-5-yl)-phenyl]-methanesulfonamide was prepared from 5-bromo-[1,2,4]triazolo[1,5-a]pyridin-2-ylamine (1.80 g, 8.45 mmol) and 4-methylsulfonylaminophenyl boronic acid (2.0 g, 9.30 mmol), in a manner analogous to Step 73c. The residue was purified on a 40 g Isco silica gel column using a gradient of 0-15% methanol in dichloromethane as an eluent. N-[4-(2-Amino-[1,2,4]triazolo[1,5-a]pyridin-5-yl)-phenyl]-methanesulfonamide (389 mg, 15%) was isolated as a beige powder. 1H NMR (400 MHz, (D3C)2SO, δ, ppm): 10.06 (s, 1H), 7.96 (d, J=10.7 Hz, 2H), 7.49 (t, J=17.1 Hz, 7.5 Hz, 1H), 7.34 (d, J=8.6 Hz, 3H), 7.00 (d, J=7.5 Hz, 1H), 6.01 (s, 2H), 3.09 (s, 3H). MS=304 (MH)+.

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