2,2'-Bipyridine → (E)-tert-butyl-5-(3-(3,5-dichloro-4-fluorophenyl)-4,4,4-trifluorobut-1-enyl)indoline-1-carboxylate

온도

150 °C

To a stirred solution of tert-butyl-5-vinylindoline-1-carboxylate (1.28 g, 5.23 mmol) in 1,2-dichlorobenzene (10.0 mL), was added 5-(1-bromo-2,2,2-trifluoroethyl)-1,3-dichloro-2-fluorobenzene (3.4 g, 10 mmol), CuCl (103 mg, 1.05 mmol) and 2,2-bipyridyl (0.326 g, 2.092 mmol) and the resultant reaction mixture was degassed with argon for 30 min and heated to 150° C. for 1 h. The reaction mixture was cooled to ambient temperature and filtered and the filtrate was concentrated under reduced pressure. The crude compound was purified by column chromatography (SiO2, 100-200 mesh; 2% ethyl acetate/petroleum ether) to afford the title compound as a pale yellow gummy solid (0.3 g, 61%): 1H NMR (400 MHz, CDCl3) δ 7.34 (d, J=6.0 Hz, 2H), 7.22 (s, 2H), 7.16 (d, J=8.4 Hz, 1H), 6.52 (d, J=16.0 Hz, 1H), 6.21 (dd, J=16.0, 7.6 Hz, 1H), 4.07 (m, 3H), 3.10 (t, J=8.4 Hz, 2H), 1.55 (s, 9H); ESIMS m/z 433.79 ([M−H]−); IR (thin film) 1168, 858 cm−1.

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. customThe crude compound was purified by column chromatography (SiO2, 100-200 mesh; 2% ethyl acetate/petroleum ether)

ORD 기록

ord-a3c3bfb2603841eb8177ac991e0a7469

출처 데이터셋

uspto-grants-2015_12

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US09211281B2