反应详情

A Teflon-coated magnetic stirring rod was placed in a 10 mL two-necked flask which was then equipped with a reflux condenser. The reflux condenser was connected to a pressure reduced/nitrogen line and the whole apparatus was dried with heating under reduced pressure. Thereafter, N2 gas was charged in the reaction apparatus and the whole reaction apparatus was purged with nitrogen. The reaction vessel was left to cool to room temperature, then, Ru(cod)(cot) complex (0.05 mmol, 15.8 mg), 2-m-tolylpyridine (1 mmol, 169.2 mg), styryl acetate (3 mmol, 486.6 mg) and toluene (1.5 mL) were added. The mixture was heated by an oil bath and reacted under reflux condition for 50 hours. 50 hours after, the reaction solution was left to cool to room temperature, then, triethylamine (0.3 mL) was added. Isolation of the product was carried out by silica gel column chromatography (i.d.=30 mm; length=170-250 mm; hexane:EtOAc:Et3N=9:1:0.1; 25 mL each). A subject substance 2-(5-methyl-2-styrylphenyl)-pyridine was obtained with a yield of 98%.

1. customwhich was then equipped with a reflux condenser
2. customthe whole apparatus was dried
3. temperaturewith heating under reduced pressure
4. additionThereafter, N2 gas was charged in the reaction apparatus
5. customthe whole reaction apparatus was purged with nitrogen
6. waitThe reaction vessel was left
7. temperatureThe mixture was heated by an oil bath
8. customreacted
9. temperatureunder reflux condition for 50 hours
10. temperatureto cool to room temperature