反应详情

A solution of 4-bromo-2-trifluoromethylpyridine (1.76 g, 7.80 mmol) in THF (2 mL) was added dropwise at −100° C. to t-butyllithium (9.17 mL, 15.59 mmol) in THF (15 mL) followed by the addition of (E)-N-((3-bromo-4-methoxyphenyl)(2-cyano-3-fluorophenyl)methylene)-2-methylpropane-2-sulfinamide (3.1 g, 7.09 mmol) in THF (10 mL). The reaction mixture was left on a thawing cooling bath for 1 hour and then allowed to reach room temperature and stirred for 2.5 hours. Hydrochloric acid in methanol (1.25 M, 28.4 mL, 35.4 mmol) was added and the reaction was stirred for 1 hour. Silica powder was added and the mixture was concentrated under reduced pressure. The residue was purified by flash column chromatography (0-10% 0.1M NH3 in methanol in DCM) to afford the title compound (3.04 g, 89%).

1. waitThe reaction mixture was left on a thawing
2. temperaturecooling bath for 1 hour
3. customto reach room temperature
4. stirringthe reaction was stirred for 1 hour
5. additionSilica powder was added
6. concentrationthe mixture was concentrated under reduced pressure
7. customThe residue was purified by flash column chromatography (0-10% 0.1M NH3 in methanol in DCM)