Ammonia → 2-(4-Fluorophenyl)-4-(4-methylpentyloxy)-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone

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The title compound was prepared according to the method of Example 335, starting with 2-(4-fluorophenyl)-4-tosyloxy-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone in place of 2-(3-chlorophenyl)-4-tosyloxy-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone and substituting 4-methyl-1-pentanol in place of isobutanol (yield: 0.128 g, 85%). mp 123-125° C. 1H NMR (300 MHz, DMSO d6) δ 0.74 (d, J=6 Hz, 6H), 1.03 (m, 2H), 1.39 (m, 1H), 1.54 (m, 2H), 3.28 (s, 3H), 4.39 (t, J=6 Hz, 2H), 7.37 (m, 2H), 7.66 (m, 2H), 7.91 (m, 2H), 8.07 (m, 2H), 8.18 (s, 1H). MS (DCI/NH3) m/z 445 (M+H)+. Anal. calc. for C23H25FN2O4S: C, 62.14; H, 5.67; N, 6.30. Found: C, 62.28; H, 5.59; N, 6.25.

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