2,2'-Bipyridine → (E)-N-(2-chloro-4-(4,4,4-trifluoro-3-(3,4,5-trichlorophenyl)but-1-en-1-yl)benzyl)pyridin-2-amine

温度

180 °C

To a stirred solution of N-(2-chloro-4-vinylbenzyl)pyridin-2-amine (0.3 g, 1.22 mmol) in 1,2-dichlorobenzene (5 mL) were added 5-(1-bromo-2,2,2-trifluoroethyl)-1,2,3-trichlorobenzene (0.83 g, 2.44 mmol), CuCl (24 mg, 0.24 mmol) and 2,2-bipyridyl (76 mg, 0.48 mmol). The resultant reaction mixture was degassed with argon for 30 min and then stirred at 180° C. for 24 h. After the reaction was deemed complete by TLC, the reaction mixture was cooled to ambient temperature and filtered, and the filtrate was concentrated under reduced pressure. Purification by flash chromatography (SiO2, 100-200 mesh; 15% EtOAc in n-hexane) afforded the title compound as an off-white solid (0.2 g, 35%): mp 140-142° C.; 1H NMR (400 MHz, CDCl3) δ 8.11 (d, J=4.0 Hz, 1H), 7.40 (m, 5H), 7.22 (m, 1H), 6.61 (m, 2H), 6.35 (m, 2H), 4.94 (br s, 1H), 4.61 (d, J=6.4 Hz, 2H), 4.11 (m, 1H); ESIMS m/z 505.39 ([M+H]+).

1. customThe resultant reaction mixture
2. customwas degassed with argon for 30 min
3. temperaturethe reaction mixture was cooled to ambient temperature
4. filtrationfiltered
5. concentrationthe filtrate was concentrated under reduced pressure
6. customPurification by flash chromatography (SiO2, 100-200 mesh; 15% EtOAc in n-hexane)

ORDレコード

ord-5fbac451d178403b94ec7add9fa54a4f

出典データセット

uspto-grants-2015_12

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US09212163B2