Methanol → HCID 118108777, compound

16.4 mL of a 1.5 mol/L diisobutylaluminum hydride/toluene solution was added dropwise to a solution of 4.3 g of 5-methyl-3-(pyridin-2-ylsulfanyl)oxolane-2-one in 100 mL of tetrahydrofuran at −78° C., and the obtained mixture was then stirred for 7.5 hours. Thereafter, 15 mL of methanol was added to the reaction mixture, and 100 mL of a saturated potassium sodium tartrate aqueous solution was then added to the mixture at room temperature. The thus obtained mixture was stirred for 30 minutes, and the water layer was then removed. The water layer was extracted with 100 mL of ethyl acetate. The organic layer was combined with the extract, and the obtained mixture was then washed with a saturated sodium chloride aqueous solution and was then dried over anhydrous magnesium sulfate. After that, the solvent was distilled away under reduced pressure. The obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate=4/1), so as to obtain 2.8 g of 5-methyl-3-(pyridin-2-ylsulfanyl)oxolan-2-ol in the form of a colorless oily product.

1. additionwas then added to the mixture at room temperature
2. stirringThe thus obtained mixture was stirred for 30 minutes
3. customthe water layer was then removed
4. extractionThe water layer was extracted with 100 mL of ethyl acetate
5. washthe obtained mixture was then washed with a saturated sodium chloride aqueous solution
6. dry with materialwas then dried over anhydrous magnesium sulfate
7. distillationAfter that, the solvent was distilled away under reduced pressure
8. customThe obtained residue was purified by silica gel column chromatography (hexane/ethyl acetate=4/1)

ORD record

ord-9dd825a674f244b0ab942ba5b6a5fb8a

Source dataset

uspto-grants-2015_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09221865B2