反应详情

To a solution of 2,4-dichloro-5-methyl-pyridine (337 mg, 2.08 mmol) in methanol (10 mL), NaOH (93 mg, 2.33 mmol) is added. The mixture is refluxed for 5 days before it is cooled to rt, diluted with water and extracted with EA. The org. extract is dried over MgSO4, filtered and concentrated to give 2-chloro-4-methoxy-5-methyl-pyridine (240 mg) as a white solid; 1H NMR (CDCl3): δ 2.15 (s, 3H), 3.90 (s, 3H), 6.77 (s, 1H), 8.02 (s, 1H); 13C NMR (CDCl): δ 12.67, 55.60, 105.77, 121.77, 149.50, 150.29, 165.41.

1. temperatureThe mixture is refluxed for 5 days before it
2. extractionextracted with EA
3. extractionextract
4. dry with materialis dried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated