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ChemicalBook CAS DataBase List Tetrahydro-4-pyranol
2081-44-9

Tetrahydro-4-pyranol synthesis

7synthesis methods
29943-42-8 Synthesis
Tetrahydro-4H-pyran-4-one

29943-42-8
425 suppliers
$5.00/1g

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Yield:2081-44-9 99%

Reaction Conditions:

Stage #1: dihydro-2H-pyran-4(3H)-onewith lithium aluminium hydride in tetrahydrofuran at 0; for 0.5 h;
Stage #2: with sodium hydroxide in tetrahydrofuran;lithium hydroxide monohydrate;

Steps:

8.1

To a solution of 8a (5.Og, 50mmol) in THF (25mL) cooled to O0C, was added a suspension Of LiAlH4 (3.8g, O.lmol) in THF (5OmL) slowly. The resulting mixture was stirred at O0C for 30min, then was added water (3.8mL), followed by aqueous 15% NaOH (3.8mL) and water (1 1.4mL). The mixture was filtered and the solid was washed with ethyl ester (70mLχ2). The combined filtrate was evaporated to afford 8b (5.09g, 99%).

References:

WO2008/88881,2008,A1 Location in patent:Page/Page column 39

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