Allyl Alcohol → HCID 67157178, compound

α-D-cellobiose octaacetate (48.59 g, 71.6 mmol) was dissolved in methylene chloride (600 mL), and allyl alcohol (29 ml, 0.43 mol) and trimethylsilyl trifluoromethanesulfonate (16 mL, 86.0 mmol) were added thereto under ice-cooling, followed by stirring of the mixture at room temperature for 1.5 hours. Water (200 mL) was added to the reaction mixture and the mixture was extracted with methylene chloride (200 mL). The extract was washed with a saturated aqueous NaCl solution (100 mL) and after it was dried with anhydrous sodium sulfate, the solvent was distilled off under reduced pressure. The residue was dissolved in methanol (300 mL) and sodium methoxide (28 mL, 0.14 mol) was added thereto under ice-cooling, followed by stirring of the mixture at room temperature for 2 hours. Dowex 50w×8 was added to the reaction mixture until the reaction mixture became neutral and after it was filtered, the solvent was distilled off under reduced pressure. The residue was purified using silica gel flash column chromatography (ethyl acetate:methanol:water, 8:2:1, V/V) to obtain the desired title compound (24.8 g, yield: 91%) as a pale yellow amorphous substance.

1. temperatureunder ice-cooling
2. extractionthe mixture was extracted with methylene chloride (200 mL)
3. washThe extract was washed with a saturated aqueous NaCl solution (100 mL)
4. dry with materialafter it was dried with anhydrous sodium sulfate
5. distillationthe solvent was distilled off under reduced pressure
6. dissolutionThe residue was dissolved in methanol (300 mL)
7. temperatureunder ice-cooling
8. stirringby stirring of the mixture at room temperature for 2 hours
9. filtrationafter it was filtered
10. distillationthe solvent was distilled off under reduced pressure
11. customThe residue was purified

ORD record

ord-981fb77af59c4009bfc118677cd954fc

Source dataset

uspto-grants-2011_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07943584B2