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926-56-7

Basic Information
CAS No.: 926-56-7
Name: 4-METHYL-1,3-PENTADIENE
Article Data: 73
Molecular Structure:
Molecular Structure of 926-56-7 (4-METHYL-1,3-PENTADIENE)
Formula: C6H10
Molecular Weight: 82.1454
Synonyms: 1,1-Dimethyl-1,3-butadiene;1,1-Dimethylbutadiene; 2-Methyl-2,4-pentadiene; 4-Methyl-1,3-pentadiene
Density: 0.707g/cm3
Melting Point: -94.9°C (estimate)
Boiling Point: 76.5°Cat760mmHg
Flash Point: °C
Hazard Symbols:
Risk Codes: 11-65
Safety: A very dangerous fire hazard when exposed to heat or flame. When heated to decomposition it emits acrid smoke and irritating fumes. See also 2-METHYL-1,3-PENTADIENE.
PSA: 0.00000
LogP: 2.13860
Synthetic route
76109-67-6

N-(1-isopropylallyloxycarbonyl)aniline

A

926-56-7

4-methyl-1,3-pentadiene

B

97206-71-8

4-methyl-3-(phenylamino)pent-1-ene

C

62-53-3

aniline

Conditions
ConditionsYield
PdLn In 1,4-dioxane at 100℃; for 0.25h;A n/a
B 2 % Chromat.
C 98%

((E)-4-Benzenesulfonyl-4-methyl-pent-2-enyl)-trimethyl-silane

926-56-7

4-methyl-1,3-pentadiene

Conditions
ConditionsYield
With tetrabutyl ammonium fluoride In dimethyl sulfoxide at 25℃;72%
146514-07-0

(E)-but-2-en-1-yl phenylcarbamate

A

926-56-7

4-methyl-1,3-pentadiene

B

35755-80-7

(E)-N-(2-butenyl)aniline

C

62-53-3

aniline

Conditions
ConditionsYield
PdLn In 1,4-dioxane at 100℃; for 6h;A n/a
B 70%
C 30%
107-86-8

3,3-dimethyl acrylaldehyde

1779-49-3

Methyltriphenylphosphonium bromide

926-56-7

4-methyl-1,3-pentadiene

Conditions
ConditionsYield
With n-butyllithium In diethyl ether; pentane for 12h; Ambient temperature;57%
With n-butyllithium In diethyl ether; toluene at 20℃; Inert atmosphere;14%
3664-56-0

1,3,3-trimethylcyclopropene

A

926-56-7

4-methyl-1,3-pentadiene

B

21020-27-9

4-methylpent-2-yne

C

3043-33-2

2-methyl-2,3-pentadiene

D

926-54-5

trans-2-methyl-1,3-pentadiene

Conditions
ConditionsYield
In pentane at 23℃; Irradiation; Further byproducts given;A 37%
B 14%
C 31%
D 11%
3664-56-0

1,3,3-trimethylcyclopropene

A

926-56-7

4-methyl-1,3-pentadiene

B

21020-27-9

4-methylpent-2-yne

C

3043-33-2

2-methyl-2,3-pentadiene

D

513-81-5

2,3-dimethyl-buta-1,3-diene

Conditions
ConditionsYield
In pentane at 23℃; Irradiation; Further byproducts given;A 37%
B 14%
C 31%
D 7%
3664-56-0

1,3,3-trimethylcyclopropene

A

926-56-7

4-methyl-1,3-pentadiene

B

21020-27-9

4-methylpent-2-yne

C

3043-33-2

2-methyl-2,3-pentadiene

D

926-54-5

trans-2-methyl-1,3-pentadiene

E

513-81-5

2,3-dimethyl-buta-1,3-diene

Conditions
ConditionsYield
In pentane at 23℃; Product distribution; Irradiation;A 37%
B 14%
C 31%
D 11%
E 7%

(Z)-1,4-Diiodo-2-methyl-pent-1-ene

A

926-56-7

4-methyl-1,3-pentadiene

B

1118-58-7

1,3-Dimethyl-1,3-butadien

C

1489-61-8

1,3-dimethylcyclobutene

Conditions
ConditionsYield
With tert.-butyl lithiumA 19%
B 32%
C 37%
107-41-5

2-methyl-2,4-pentanediol

A

926-56-7

4-methyl-1,3-pentadiene

B

926-54-5

trans-2-methyl-1,3-pentadiene

Conditions
ConditionsYield
With hydrogen bromide In water Dehydration;A 7%
B n/a
5182-37-6

2,4,4,6-tetramethyl-1,3-dioxane

A

926-56-7

4-methyl-1,3-pentadiene

B

1118-58-7

1,3-Dimethyl-1,3-butadien

Conditions
ConditionsYield
With phosphate-catalyst; water at 325℃;
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    4-METHYL-1,3-PENTADIENE Basic information Product Name: 4-METHYL-1,3-PENTADIENE Synonyms: 4-METHYL-1,3-PENTADIENE;(CH3)2C=CHCH=CH2;1,3-Pentadiene, 4-methyl-;1,3-pen

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Chemistry

IUPAC Name:  4-Methylpenta-1,3-diene
Synonyms:  4-Methylpenta-1,3-diene ; 1,3-Pentadiene, 4-methyl- ; 3-Methyl-1,4-pentadiene ; 4-Methyl-1,3-pentadiene ; Penta-1,3-diene, 4-methyl-
The Molecular Formula of  4-Methylpenta-1,3-diene (CAS NO.926-56-7):C6H10
The Molecular Weight of  4-Methylpenta-1,3-diene (CAS NO.926-56-7):82.1436g/mol
The Molecular Structure of  4-Methylpenta-1,3-diene (CAS NO.926-56-7):
Index of Refraction: 1.421
Molar Refractivity: 29.47 cm3
Molar Volume: 116  cm3
Surface Tension: 19.2 dyne/cm
Density: 0.707 g/ cm3
Flash Point: -18°C
Enthalpy of Vaporization: 30.44 kJ/mol
Boiling Point: 76.5 °C at 760 mmHg
Vapour Pressure: 111 mmHg at 25°C

Uses

  4-Methylpenta-1,3-diene ,whose cas register No. is 926-56-7, can be used as reducing agent.

Safety Profile

A very dangerous fire hazard when exposed to heat or flame. When heated to decomposition it emits acrid smoke and irritating fumes. See also 2-METHYL-1,3-PENTADIENE.
 Hazard Codes: FlammableF,HarmfulXn
Risk Statements: 11-65 
R11:Highly flammable. 
R65:Harmful: may cause lung damage if swallowed.
Safety Statements: 16-36-62 
S16:Keep away from sources of ignition. 
S36:Wear suitable protective clothing. 
S62:If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label.
RIDADR: UN 2461 3/PG 2
WGK Germany: 3
HazardClass: 3.1
PackingGroup: II