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ChemicalBook CAS DataBase List 3-hydroxy-3-methyltetrahydro-4H-pyran-4-one
693248-64-5

3-hydroxy-3-methyltetrahydro-4H-pyran-4-one synthesis

4synthesis methods
4,4-dimethoxy-3-methyltetrahydro-2H-pyran-3-ol

693248-63-4
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3-hydroxy-3-methyltetrahydro-4H-pyran-4-one

693248-64-5
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Yield:693248-64-5 18%

Reaction Conditions:

with hydrogenchloride in tetrahydrofuran;water at 20; for 1 h;

Steps:



A solution of product from Step B (50 mg, 0.31 mmol) in THF/water (1 I mL/0. mL) was treated with concentrated hydrochloric acid (0.1 mL) and the resulting solution was stirred at room temperature for 1 h. The mixture was concentrated in vacuo to remove the THF and the aqueous layer was extracted with ether (6 x 5 mL). The organics were combined, dried over anhydrous sodium sulfate, filtered, and evaporated under reduced pressure to afford the product (7.5 mg, 18%) as a clear film.

References:

WO2005/105092,2005,A2 Location in patent:Page/Page column 28