145491
2,3-Dimethyl-1,3-butadiene
98%, contains 100 ppm BHT as stabilizer
Synonym(s):
2,3-Dimethylbuta-1,2-diene, 2,3-Dimethylenebutane, Biisopropenyl, Diisopropenyl
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About This Item
Linear Formula:
CH2=C(CH3)C(CH3)=CH2
CAS Number:
Molecular Weight:
82.14
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
208-172-0
Beilstein/REAXYS Number:
605285
MDL number:
Assay:
98%
Form:
liquid
vapor pressure
269 mmHg ( 37.7 °C)
Quality Segment
assay
98%
form
liquid
contains
100 ppm BHT as stabilizer
refractive index
n20/D 1.438 (lit.)
bp
68-69 °C (lit.)
mp
−76 °C (lit.)
density
0.726 g/mL at 25 °C (lit.)
storage temp.
2-8°C
SMILES string
CC(=C)C(C)=C
InChI
1S/C6H10/c1-5(2)6(3)4/h1,3H2,2,4H3
InChI key
SDJHPPZKZZWAKF-UHFFFAOYSA-N
General description
2,3-Dimethyl-1,3-butadiene (DMBD) is a conjugated diene. It undergoes Diels Alder cycloaddition reaction with 2-thio-3-chloroacrylamides under thermal, catalytic and microwave conditions. It undergoes thermal [4+2] cycloaddition reaction with 3-acetyl-, 3-carbamoyl and 3-ethoxycarbonylcoumarins under solvent free conditions. DMBD participates in polymerization reactions in the presence of iron dichloride complexes based catalysts.
Application
2,3-Dimethyl-1,3-butadiene was used to investigate the reactions of 1,3-dienes with the Si(001) surface using scanning tunneling microscopy and fourier transform infrared spectroscopy.
It may be used in the following processes:
It may be used in the following processes:
- Preparation of 1,3,6-triene derivatives of corresponding 1-aryl-substituted 1,3-dienes by 1,4-hydrobutadienylation in the presence of cobalt catalyst.
- Synthesis of 6-aryl(hetaryl)-3,4-dimethyl-1-nitro-1-cyano-3-cyclohexenes by reacting with gem-cyanonitroethenes.
- As a halogen trap during the study of the photolysis reaction of dibromo adduct of 2,5-diphenyltellurophene.
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signalword
Danger
hcodes
Hazard Classifications
Flam. Liq. 2
Storage Class
3 - Flammable liquids
wgk
WGK 3
flash_point_f
30.2 °F - closed cup
flash_point_c
-1 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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