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2-METHOXYTETRAHYDROPYRAN

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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
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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.)
Flash point:
77 °F
Specific Gravity
0.963
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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

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2-METHOXYTETRAHYDROPYRAN Usage And Synthesis

Preparation

To 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).

General Description

2-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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