反应详情

To a stirred solution of 3.4 g of 2-bromotoluene in 100 ml of dry tetrahydrofuran at -78° C. is slowly added 8 ml of 2.5M butyl lithium in hexane. The reaction mixture is stirred for 30 minutes and 6.5 g of tri-n-butyl tin chloride in 25 ml of tetrahydrofuran added. The reaction mixture is stirred an additional 1 hour, quenched with water and extracted with ether. The ether extract is dried over Na2SO4, filtered and the filtrate evaporated in vacuo to give 7.0 g of a residue. Mass spectrum: M+H:381.

1. customat -78° C.
2. stirringThe reaction mixture is stirred an additional 1 hour
3. customquenched with water
4. extractionextracted with ether
5. extractionThe ether extract
6. dry with materialis dried over Na2SO4
7. filtrationfiltered
8. customthe filtrate evaporated in vacuo