反应详情

Potassium metal (1.5 g, 38.36 mmol) and anhydrous benzene (180 ml) were placed in a 500 ml three-neck round-bottomed flask equipped with a reflux condenser, dropping funnel, stir bar, and N2 atmosphere. The reaction mixture was refluxed. When the potassium metal had melted, isopropylidene glycerol (6 ml, 48.25 mmol) was added dropwise and the reaction continued to reflux an additional 2.5 hours. A solution of hexadecyl methane sulfonate (10.0 g, 32.25 mmol) in anhydrous benzene (80 ml) was added dropwise and the reaction refluxed overnight. The heat was removed and the reaction mixture was coled to 0° C. Water was added and the benzene layer was removed, washed with H2O, dried (MgSO4) and filtered. This residue was treated as in METHOD A for the hydrolysis of the acetal group to provide compound 35, rac-1-O-hexadecylglycerol (7.65 g, 75%, based on mesylate 34).

1. customequipped with a reflux condenser
2. temperatureThe reaction mixture was refluxed
3. temperatureto reflux an additional 2.5 hours
4. temperaturethe reaction refluxed overnight
5. customThe heat was removed
6. customwas coled to 0° C
7. additionWater was added
8. customthe benzene layer was removed
9. washwashed with H2O
10. dry with materialdried (MgSO4)
11. filtrationfiltered
12. additionThis residue was treated as in METHOD A for the hydrolysis of the acetal group