2,3-Dihydro-1,4-benzodioxin-5-carboxylic acid → 4-[(2,3-dihydro-benzo[1,4]dioxine-5-carbonyl)-amino]-1H-pyrazole-3-carboxylic acid

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The compound was prepared in a manner analogous to 4-(2,6-difluoro-benzoylamino)-1H-pyrazole-3-carboxylic acid (Example 16D), but using 2,3-dihydro-benzo[1,4]dioxine-5-carboxylic acid as the starting acid to give 4-[(2,3-dihydro-benzo[1,4]dioxine-5-carbonyl)-amino]-1H-pyrazole-3-carboxylic acid (340 mg) as a white solid. (1H NMR (300 MHz, DMSO-d6) δ 13.5 (s, 2H), 11.2 (s, 1H), 8.4 (s, 1H), 7.7 (d, 1H), 7.1 (d, 1H), 7.0 (t, 1H), 4.5 (s, 2H), 4.4 (s, 2H)).

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