Reaction #469080

Reaction equation

4-(4-fluorophenylmethyl)-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone

1-bromo-3,4-difluorobenzene

NH3

→

title compound

3,4-Difluorophenyl-4-(4-fluorobenzyl)-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone

Solvents

H2O

Conditions

Procedure

The title compound was prepared according to the method of Example 62 substituting 4-(4-fluorophenylmethyl)-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone in place of 4-(4-fluorophenyl)-5-[4-(methylsulfonyl)phenyl]-3(2H)-pyridazinone and substituting 1-bromo-3,4-difluorobenzene in place of 4-iodo-1-fluorobenzene (yield: 0.085 g, 54%). mp 157-159° C. 1H NMR (300 MHz, DMSO d6) δ 3.30 (s, 3H), 3.88 (bs, 2H), 7.04 (m, 4H), 7.49-7.66 (m, 2H), 7.70 (m, 2H), 7.81 (m, 1H), 8.12 (s, 1H). MS (DCI/NH3) m/z 471 (M+H)+, 488 (M+NH4)+. Anal. calc. for C24H17F3N2O3S.0.25 H2O: C, 60.69; H, 3.71; N, 5.84. Found: C, 6.39; H, 3.76; N, 5.81.

Source