TETRAHYDROPYRAN-2-CARBOXYLIC ACID Chemical Properties

Boiling point:

88-95 C

Density 

1.1400 g/cm3

storage temp. 

Sealed in dry,Room Temperature

pka

3.70±0.20(Predicted)

Appearance

Colorless to light yellow Viscous Liquid

optical activity

Consistent with structure

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-37/39

HazardClass 

IRRITANT

HS Code 

2932990090

TETRAHYDROPYRAN-2-CARBOXYLIC ACID Usage And Synthesis

Synthesis

4-oxo-2-tetrahydropyranoic acid (10g) was dissolved in 150mL glacial acetic acid, added to the autoclave with 5% Pd/C (2g), passed into the hydrogen, at 0.4MPa pressure, 75 ?? under the reaction until the system no longer absorbs hydrogen until the disappearance of the raw material point detected by TLC. Cooling, filtration, spinning to remove the solvent, to obtain the black material, and then dissolved in ether, with sodium bicarbonate. Extraction (3??150mI), ether washing (3??150mI), acidification, filtration, to get white solid, toluene recrystallization, to get white crystals of 2-tetrahydropyranoic acid 8.2 g.

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