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:
Molecular Weight:
84.12
UNSPSC Code:
12352005
NACRES:
NA.22
PubChem Substance ID:
EC Number:
203-810-4
Beilstein/REAXYS Number:
103493
MDL number:
Assay:
97%
Form:
liquid
vapor density
2.9 (vs air)
Quality Level
assay
97%
form
liquid
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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signalword
Danger
hcodes
Hazard Classifications
Aquatic Chronic 3 - Eye Irrit. 2 - Flam. Liq. 2 - Skin Irrit. 2 - Skin Sens. 1B
supp_hazards
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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