2,3-Dimethyl-1,3-butadiene

98%, contains 100 ppm BHT as stabilizer

Sinônimo(s):

2,3-Dimethylbuta-1,2-diene, 2,3-Dimethylenebutane, Biisopropenyl, Diisopropenyl

Sobre este item

Fórmula linear:

CH₂=C(CH₃)C(CH₃)=CH₂

Número CAS:

513-81-5

Peso molecular:

82.14

UNSPSC Code:

12352100

NACRES:

NA.22

PubChem Substance ID:

24848729

EC Number:

208-172-0

Beilstein/REAXYS Number:

605285

MDL number:

MFCD00008595

Assay:

98%

Form:

liquid

Propriedades

vapor pressure

269 mmHg ( 37.7 °C)

Quality Segment

200

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

Descrição

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.[1] It undergoes thermal [4+2] cycloaddition reaction with 3-acetyl-, 3-carbamoyl and 3-ethoxycarbonylcoumarins under solvent free conditions.[2] 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:

• 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.