反应详情

温度

-78 °C

2-Chloro-4-(trifluoromethyl)benzonitrile (500 mg, 2.43 mmol) was diluted with toluene (3 mL), placed under nitrogen and cooled to −78° C. DIBAL-H (4865 μL, 4.86 mmol) was added dropwise and the reaction was stirred for 1 hour. The reaction was warmed to 0° C. and acetic acid (2 mL) was added followed by 10 mL of water. After stirring for 2 hours, the reaction was extracted twice with ethyl acetate, washed with Rochelle's salt, dried over MgSO4, filtered and concentrated. The material was purified using a biotage 25 cartridge running a gradient, 100% hexanes to 20% DCM/hexanes to yield 2-chloro-4-(trifluoromethyl)benzaldehyde (400 mg, 1.92 mmol, 78.8% yield) as a clear oil.

1. temperatureThe reaction was warmed to 0° C.
2. stirringAfter stirring for 2 hours
3. extractionthe reaction was extracted twice with ethyl acetate
4. washwashed with Rochelle's salt
5. dry with materialdried over MgSO4
6. filtrationfiltered
7. concentrationconcentrated
8. customThe material was purified