Potassium tert-butoxide → 2-[4-(4,5-Dihydro-1H-pyrazol-4-ylcarbonyl)anilino]-4-(imidazo-[1,2-a]-pyridin-3-yl)pyrimidine

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Reaction Steps

The title compound was prepared from 2-amino-4-(imidazo-[1,2-a]pyridin-3-yl)pyrimidine and (4-bromophenyl)(1H-pyrazol-4-yl)methanone following the general method of Example 1 using potassium tert-butoxide as the base. The crude product was purified by column chromatography on silica gel using chloroform/ethanol, 95:5, as the eluent affording 0.020 g (8% yield) of the title compound as a yellow solid: mp (decomp.) 229-232° C.; MS (TSP) m/z 382 (M+1); 1H NMR (400 MHz, DMSO-d6) δ 10.27 (d, J=6.9 Hz, 1 H), 10.21 (s, 1 H), 8.76 (s, 1 H), 8.62 (d, J=5.4 Hz, 1 H), 8.30 (br s 2H), 8.03 (m, 5 H), 7.89 (m, 1 H), 7.62 (m, 2 H), 7.29 (m, 1 H).

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