反应详情

6.5 g (18 mmol) of 3,6-dichloro-2-(4-chloro-3-methoxyphenyl)-5-trifluoromethylpyridine and 6.1 g (109 mmol) of potassium hydroxide in 100 ml of ethanol were stirred at 23° C. for 41 h. The solvent was then removed by distillation and the residue was taken up in 100 ml of dilute hydrochloric acid. Extraction was carried out three times with 100 ml of methylene chloride each time. The combined extracts were dried over sodium sulfate and then concentrated. Yield: 6.3 g (85%) of a colorless oil (purity about 90%).

1. customThe solvent was then removed by distillation
2. extractionExtraction
3. dry with materialThe combined extracts were dried over sodium sulfate
4. concentrationconcentrated