Methyl 2-chloro-4-nitrobenzoate → 8-Amino-5-oxo-2-(4-phenoxyphenyl)-4,5-dihydropyrazolo[1,5-a]quinazoline-3-carboxamide

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The desired product was prepared from methyl 2-chloro-4-nitrobenzoate and 5-amino-3-(4-phenoxyphenyl)-1H-pyrazole-4-carboxamide using the procedures similar to those for compound 76 and 77. 1H NMR (400 MHz, DMSO-d6) δ 10.61 (s, 1H), 7.77 (d, J=8.4 Hz, 1H), 7.71 (d, J=8.0 Hz, 2H), 7.44-7.36 (m, 2H), 7.19-7.02 (m, 6H), 6.64 (d, J=8.4 Hz, 1H), 6.55 (br s, 2H). MS (ESI, m/e) [M+1]+ 412.1.

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