2,2'-Bipyridine → (E)-2-((3-chloro-5-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-en-1-yl)pyridin-2-yl)methyl)isoindoline-1,3-dione

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 2-((3-chloro-5-vinylpyridin-2-yl)methyl)isoindoline-1,3-dione (0.35 g, 1.17 mmol) in 1,2-dichlorobenzene (10 mL) were added 5-(1-bromo-2,2,2-trifluoroethyl)-1,2,3-trichlorobenzene (0.8 g, 2.3 mmol), CuCl (23 mg, 0.12 mmol), 2,2-bipyridyl (0.073 g, 0.234 mmol), and the reaction mixture was heated at 180° C. for 16 h. The reaction mixture was concentrated under reduced pressure and purified by column chromatography (20-30% EtOAc in hexane) to afford the title compound as a liquid (0.4 g, 50%): mp 79-82° C.; 1H NMR (400 MHz, CDCl3) δ 8.27 (s, 1H), 7.91 (m, 2H), 7.77 (m, 3H), 7.36 (s, 2H), 6.51 (d, J=15.6 Hz, 1H), 6.32 (dd, J=15.6, 8.0 Hz, 1H), 5.30 (s, 2H), 4.13 (m, 1H); ESIMS m/z 559 ([M+H]+).

Provenance & Evidence