反应详情

To a 25 mL round bottom flask containing (S)-(4-(trifluoromethyl)-phenyl)(3-(trifluoromethyl)pyridin-2-yl)methanamine hydrochloride (Intermediate 1) (120 mg, 0.336 mmol) was added toluene (3 mL). The resulting mixture was stirred at rt for 2 min. At this time, sodium carbonate (143 mg, 1.346 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (3.89 mg, 6.73 μmol), palladium (II) acetate (1.5 mg, 6.7 μmol) and 6-bromo-2,3-dihydro-isoindol-1-one (71.3 mg, 0.336 mmol) were added to the flask. The reaction vessel was flushed with argon and then left under 1.0 atm of carbon monoxide gas (from a lecture bottle, in hood). The flask was heated to 85° C. overnight, filtered though Celite® brand filter agent, and eluted with EtOAc. Purification by reverse phase HPLC, and concentration of the containing fractions gave (S)-3-oxo-N-((4-(trifluoromethyl)-phenyl)(3-(trifluoromethyl)pyridin-2-yl)methyl)isoindoline-5-carboxamide as a yellow foamy solid. 1H NMR (300 MHz, CDCl3): δ ppm 8.92 (d, J=4.5 Hz, 1H), 8.40 (d, J=7.7 Hz, 1H), 7.60-7.56 (m, 5H), 7.46-7.48 (m, 2H), 6.90 (d, J=7.6 Hz, 1H), 4.54 (s, 2H). MS (ESI pos. ion) m/z: 480.1 (M+H).

1. customThe reaction vessel was flushed with argon
2. waitleft under 1.0 atm of carbon monoxide gas (from a lecture bottle
3. temperatureThe flask was heated to 85° C. overnight
4. filtrationfiltered though Celite® brand
5. filtrationfilter agent
6. washeluted with EtOAc
7. customPurification by reverse phase HPLC, and concentration of the containing fractions