Ammonia → 2-(4-Fluorophenyl)-4-(2-cyclopropyl-1-ethoxy)-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone

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The title compound was prepared according to the method of Example 335, substituting 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 2-cyclopropane ethanol in place of isobutanol (yield: 0.1472 g, 100%). mp 111-117° C. 1H NMR (300 MHz, DMSO d6) δ −0.01 (m, 2H), 0.31 (m, 2H), 0.60 (m, 1H), 1.49 (q, J=6 Hz, 2H), 3.29 (s, 3H), 4.48 (t, J=6 Hz, 2H), 7.37 (m, 2H), 7.65 (m, 2H), 7.91 (m, 2H), 8.06 (m, 2H), 8.17 (s, 1H). MS (DCI/NH3) m/z 429 (M+H)+, 446 (M+NH4)+. Anal. calc. for C22H21FN2O4S: C, 61.67; H, 4.94; N, 6.54. Found: C, 61.59; H, 5.02; N, 6.45.

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