反应详情

A mixture of 2-chloro-4-iodopyridine (10.0 g, 41.8 mmol), p-tolylphenylboronic acid (5.68 g, 41.8 mmol), Pd(Ph3P)4 (1.45 g 1.25 mmol), sodium carbonate (13.3 g, 125 mmol), DME (300 mL) and water (75 mL) was degassed with nitrogen and then refluxed overnight. The mixture was concentrated and the extracted with ethyl acetate. The the ethyl acetate layer was dried on Na2SO4, vacuum distilled and recrystalized to give 2-chloro-4-(p-tolyl)pyridine (3.75 g, 18.4 mmol, 44% yield).

1. customwas degassed with nitrogen
2. temperaturerefluxed overnight
3. concentrationThe mixture was concentrated
4. extractionthe extracted with ethyl acetate
5. dry with materialThe the ethyl acetate layer was dried on Na2SO4, vacuum
6. distillationdistilled
7. customrecrystalized