4-Fluorophenylboronic acid → HCID 21933850, Verbindung

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The 2-phenyl-4-chloro-5-methoxy-3(2H)-pyridazinone product was coupled with 4-fluorophenylboronic acid according to the method of Example 6 to provide 2-phenyl-4-(4-fluorophenyl)-5-methoxy-3(2H)-pyridazinone (yield: 1.1 g; 96%). 1H NMR (300 MHz, CDCl3) δ 4.00 (s, 3H), 7.10 (t, J=9 Hz, 2H), 7.45 (m, 3H), 7.60 (m, 4H), 8.06 (s, 1H). MS (DCI/NH3) m/z 297 (M+H)+.

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