反应详情

A solution of 7.6 g of 1-[[8-([1,1'-biphenyl]-4-yloxy)octyl]oxy]-3-[(4-methoxyphenyl)diphenylmethoxy]-2-propanol in 20 ml of dimethylformamide and 20 ml of tetrahydrofuran was added dropwise to a solution of 849 mg of hexane washed 50% sodium hydride in 50 ml of dimethylformamide containing 5.02 g of methyl iodide over 35 minutes under argon. The mixture was stirred overnight then ice was cautiously added followed by 300 ml of iced water. This mixture was extracted three times with ether, the extracts combined, washed with water, dried and evaporated. The residue was taken up in 65 ml of chloroform and 130 ml of methanol, heated to boiling, 8 g of Amberlite® IR-4B ion exchange resin added, stirred for 2 hours, filtered and evaporated. The residue was purified by chromatography, giving 1.27 g of 3-[[8-([1,1'-biphenyl]-4-yloxy]octyl]oxy]-2-methoxy- 1-propanol.

1. washwashed 50% sodium hydride in 50 ml of dimethylformamide containing 5.02 g of methyl iodide over 35 minutes under argon
2. additionice was cautiously added
3. extractionThis mixture was extracted three times with ether
4. washwashed with water
5. customdried
6. customevaporated
7. temperature130 ml of methanol, heated
8. addition8 g of Amberlite® IR-4B ion exchange resin added
9. stirringstirred for 2 hours
10. filtrationfiltered
11. customevaporated
12. customThe residue was purified by chromatography