反应详情

温度

-78 °C

n-Butyl lithium (1.6M in hexane, 8.6 mL, 13.8 mmol) was added under nitrogen to a stirred solution of (benzyloxymethoxy)methyl-tri-(n-butyl) tin (6.1 g, 13.8 mmol) in THF (56 mL) at -78° C. The resulting mixture was stirred at -78° C. for 10 min, then added a solution of (E,E)-3,7,11-trimethyl-2,6,10-dodecatrienylbromide (3.5 g, 12.3 mmol) in THF (4 mL) via a dropping funnel. The resulting mixture was stirred at -78° C. for 0.5 hours, then poured into cold water and extracted with ether. The ethereal extract was dried, filtered and evaporated to afford a residue, which was purified by flash chromatography on a silica gel column. Elution of the column with hexane:ether (25:1, v:v) provided the title compound as a colorless oil (2.39 g, 6.7 mmol, 54.5%).

1. stirringThe resulting mixture was stirred at -78° C. for 0.5 hours
2. extractionextracted with ether
3. extractionThe ethereal extract
4. customwas dried
5. filtrationfiltered
6. customevaporated
7. customto afford a residue, which
8. customwas purified by flash chromatography on a silica gel column
9. washElution of the column with hexane:ether (25:1, v:v)