ChemicalBook Product Catalog Pharmaceutical intermediates Heterocyclic compound Pyran compounds 2-METHOXYTETRAHYDROPYRAN

2-METHOXYTETRAHYDROPYRAN

2-METHOXYTETRAHYDROPYRAN Basic information
Product Name:2-METHOXYTETRAHYDROPYRAN
Synonyms:(R,S)-2-Methoxy-tetrahydro-pyran;2H-Pyran,tetrahydro-2-methoxy-;2-methoxy-tetrahydro-pyra;Pyran,tetrahydro-2-methoxy-;tetrahydro-2-methoxy-2h-pyra;2-Methoxytetrahydro-2H-pyran;2-methoxyoxane;tetrahydro-2-methoxy-2h-pyran
CAS:6581-66-4
MF:C6H12O2
MW:116.16
EINECS:229-509-8
Product Categories:Building Blocks;Heterocyclic Building Blocks;Pyrans
Mol File:6581-66-4.mol
2-METHOXYTETRAHYDROPYRAN Structure
2-METHOXYTETRAHYDROPYRAN Chemical Properties
Boiling point 128-129 °C (lit.)
density 0.963 g/mL at 25 °C (lit.)
refractive index n20/D 1.425(lit.)
Fp 77 °F
Specific Gravity0.963
Safety Information
Hazard Codes F
Risk Statements 10
Safety Statements 16-29-33
RIDADR UN 1993 3/PG 3
WGK Germany 2
RTECS UQ0300000
HazardClass 3.2
PackingGroup III
MSDS Information
ProviderLanguage
SigmaAldrich English
2-METHOXYTETRAHYDROPYRAN Usage And Synthesis
PreparationTo a flask equipped with a stirrer and containing 84.0 gm (1.0 mole) of 2,3-dihydropyran in the presence of 1 ml of cone, hydrochloric acid is added 32.0 gm (1.0 mole) of methanol. The reaction is exothermic and is stirred for 3 hr. Then a few pellets of sodium hydroxide are added to make the reaction basic. The mixture is directly distilled to afford 98.6 gm (85%), b.p. 125°C (760 mm Hg).

Preparation of 2-Methoxytetrahydropyran

General Description2-Methoxytetrahydropyran is methoxy-substituted tetrahydropyran. α- and β-glycosidic C1-O1 bonds of the axial and equatorial forms of 2-methoxytetrahydropyran has been investigated by ab initio conformational study. Stereochemical properties of the glycosidic linkage of 2-methoxytetrahydropyran have been studied by the quantum-chemical PCILO method. It undergoes elimination reaction in the gas phase to yield 3, 4-dihydro-2H-pyran and methanol. Proton resonance spectra of 2-methoxytetrahydropyran has been analyzed.
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