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Merck
CN

557358

2-Methyl-1,5-hexadiene

97%

Synonym(s):

2-Methyldiallyl

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About This Item

Linear Formula:
CH2=CHCH2CH2C(CH3)=CH2
CAS Number:
Molecular Weight:
96.17
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352100
MDL number:
Assay:
97%
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InChI

1S/C7H12/c1-4-5-6-7(2)3/h4H,1-2,5-6H2,3H3

SMILES string

CC(=C)CCC=C

InChI key

SLQMKNPIYMOEGB-UHFFFAOYSA-N

vapor density

>1 (vs air)

assay

97%

refractive index

n20/D 1.417 (lit.), n20/D 1.4170 (lit.)

bp

92 °C (lit.)

density

0.712 g/mL at 25 °C (lit.)

functional group

allyl

General description

2-Methyl-1,5-hexadiene on mercury-photosensitized irradiation, undergoes internal cycloaddition to afford 1-methylbicyclo[2.1.1]hexane (as major product). High-temperature pyrolysis of 2-methyl-1,5-hexadiene affords 1,5-hexadiene and 2,5-dimethyl-1,5-hexadiene. 2-Methyl-1,5-hexadiene undergoes stereoselective and regioselective reaction with dialkylaluminum chloride (Et2AlCl) and titanium alkoxide [Ti(OPr-i)4, a catalyst] followed by oxidation to afford the corresponding five-membered 3-alkylcycloalkyl methanol. 2-Methyl-1,5-hexadiene is formed as a major product during the condensation reaction between allyl chloride and methallyl chloride in the presence of magnesium.

pictograms

FlameHealth hazard

signalword

Danger

Hazard Classifications

Carc. 1A - Flam. Liq. 2 - Muta. 1B - STOT RE 2

target_organs

Blood

Storage Class

3 - Flammable liquids

wgk

WGK 3

flash_point_f

10.4 °F - closed cup

flash_point_c

-12 °C - closed cup

ppe

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

Regulatory Information

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Olefins and Diolefins from Allylic Chlorides.
Henne AL, et al.
Journal of the American Chemical Society, 63(12), 3474-3476 (1941)
Vapor-phase thermolyses of 3-hydroxy-1, 5-hexadienes. II. Effects of methyl substitution.
Negishi EI, et al.
Journal of the American Chemical Society, 116(18), 8404-8405 (1994)
Mercury (3P1) photosensitized internal cycloaddition reactions in 1, 4-, 1, 5-, and 1, 6-dienes.
Srinivasan R and Carlough KH.
Journal of the American Chemical Society, 89(19), 4932-4936 (1967)
Vapor-phase thermolyses of 3-hydroxy-1, 5-hexadienes. II. Effects of methyl substitution.
Viola A, et al.
Journal of the American Chemical Society, 89(14), 3462-3470 (1967)

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