1-(Bromomethyl)-2,4-difluorobenzene → HCID 10162323, compound

Participants

Reaction Steps

2-Benzyl-4-(4-fluorophenyl)-5-[4-(aminosulfonyl)phenyl]-3(2H)-pyridazinone, prepared according to the method of Example 68, was N-debenzylated according to the method of Example 11. The intermediate was N-alkylated according to the method of Example 20, substituting 2,4-difluorobenzylbromide in place of 4-fluorobenzyl bromide to provide the title compound (yield: 65 mg, 24%). mp 236-238° C. 1H NMR (300 MHz, CDCl3) δ 4.78 (s, 2H), 5.43 (s, 2H), 6.88 (m, 2H), 6.97 (t, J=9 Hz, 2H), 7.18 (dd, J=9 Hz, 6 Hz, 2H), 7.38 (d, J=9 Hz, 2H), 7.55 (m, 1H), 7.85 (s, 1H), 7.86 (d, J=9 Hz, 2H). MS (DCI/NH3) m/z 472 (M+H)+. Anal. calc. for C23H16F3N3O3S: C, 58.59; H, 3.42; N, 8.91. Found: C, 58.44; H, 3.47; N, 8.72.

Provenance & Evidence