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D106208

3,4-Dihydro-2H-pyran

Name: 3,4-Dihydro-2<I>H</I>-pyran
Brand: ALDRICH

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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Properties

vapor density

2.9 (vs air)

Quality Segment

200

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

Description

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

GHS02,GHS07

signalword

Danger

hcodes

H225,H315,H317,H319,H412

pcodes

P210 - P233 - P273 - P280 - P303 + P361 + P353 - P305 + P351 + P338

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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