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D106208

3,4-Dihydro-2H-pyran

97%

Synonym(s):

2,3,4-Trihydropyran, 2H-3,4-Dihydropyran, Dihydro-2H-pyran, Dihydropyran

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About This Item

Empirical Formula (Hill Notation):
C5H8O
CAS Number:
110-87-2
Molecular Weight:
84.12
UNSPSC Code:
12352005
NACRES:
NA.22
PubChem Substance ID:
24893341
EC Number:
203-810-4
Beilstein/REAXYS Number:
103493
MDL number:
MFCD00006558
Assay:
97%
Form:
liquid
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vapor density

2.9 (vs air)

Quality Segment

200

assay

97%

form

liquid

reaction suitability

reactivity: alcohol reactive, reactivity: thiol reactive, reagent type: protection reagent

refractive index

n20/D 1.440 (lit.)

bp

86 °C (lit.)

mp

−70 °C (lit.)

density

0.922 g/mL at 25 °C (lit.)

SMILES string

C1COC=CC1

InChI

1S/C5H8O/c1-2-4-6-5-3-1/h2,4H,1,3,5H2

InChI key

BUDQDWGNQVEFAC-UHFFFAOYSA-N

Application

3,4-Dihydro-2H-pyran can be used as a reactant to synthesize:
  • Tetrahydropyranylated product from alcohols in the presence of phenolsulfonic acid-formaldehyde resin catalyst.
  • Tetrahydropyran derivatives by reacting pyrazoles in the presence of trifluoroacetic acid.
  • 1,2,3,4-Tetrahydroquinoline derivatives by cation-exchange resin catalyzed Domino reaction with aromatic amines.
  • Tetrahydroquinolines from aryl azides in the presence of FeCl3-NaI.

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pictograms

FlameExclamation mark
GHS02,GHS07

signalword

Danger

Hazard Classifications

Aquatic Chronic 3 - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - Skin Sens. 1B

supp_hazards

EUH019

Storage Class

3 - Flammable liquids

wgk

WGK 1

flash_point_f

5.0 °F - closed cup

flash_point_c

-15 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

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