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| CAS No.: | 563-79-1 |
|---|---|
| Name: | 2,3-Dimethyl-2-butene |
| Article Data: | 304 |
| Molecular Structure: | |
|
|
|
| Formula: | C6H12 |
| Molecular Weight: | 84.1613 |
| Synonyms: | 1,1,2,2-Tetramethylethylene;2,3-Dimethyl-2-butene;NSC 73907;Tetramethylethene;Tetramethylethylene; |
| EINECS: | 209-263-8 |
| Density: | 0.697 g/cm3 |
| Melting Point: | -75 °C |
| Boiling Point: | 70.92 °C at 760 mmHg |
| Flash Point: | 2°F |
| Appearance: | colourless liquid |
| Hazard Symbols: |
 F, Xn
|
| Risk Codes: | 11-65 |
| Safety: | 16-33-62-9 |
| Transport Information: | UN 3295 3/PG 2 |
| PSA: | 0.00000 |
| LogP: | 2.36260 |
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- 914458-26-7[5-(2-fluorophenyl)-1-pentyl-1H-pyrrol-3-yl]-1-naphthalenyl-Methanone
- 894852-01-87-BROMO-2,2-DIMETHYL-2H-PYRIDO[3,2-B][1,4]OXAZIN-3(4H)-ONE
| Conditions | Yield |
|---|---|
| aluminum oxide at -0.1℃; for 0.166667h; | 95% |
| x In nitromethane at 25℃; for 0.25h; | 88% |
| NiX(21) zeolite at -0.1℃; Rate constant; or ZnX(21) zeolite; |
- 120-12-7
anthracene
- 188754-05-4
3,3'-bis(3-phenyl-1,1,2,2-tetramethyl-3-silacyclopropane)
A
- 563-79-1
2,3-Dimethyl-2-butene
| Conditions | Yield |
|---|---|
| In benzene at 150℃; for 2h; | A 70% B n/a C 85% |
- 100-52-7
benzaldehyde
- 67-64-1
acetone
A
- 563-79-1
2,3-Dimethyl-2-butene
B
- 768-49-0
(2-methyl-1-propenyl)-benzene
C
- 588-59-0
stilbene
| Conditions | Yield |
|---|---|
| With tin(IV) chloride; zinc In tetrahydrofuran at 64 - 66℃; for 1h; McMurry Reaction; Inert atmosphere; | A n/a B 85% C n/a |
- 98-86-2
acetophenone
- 67-64-1
acetone
A
- 563-79-1
2,3-Dimethyl-2-butene
B
- 769-57-3
α,β,β-trimethylstyrene
C
- 2510-98-7
2,3-diphenyl-2-butene
| Conditions | Yield |
|---|---|
| With tin(IV) chloride; zinc In tetrahydrofuran at 64 - 66℃; for 1h; McMurry Reaction; Inert atmosphere; | A n/a B 82% C n/a |
| Conditions | Yield |
|---|---|
| With tin(IV) chloride; zinc In tetrahydrofuran at 64 - 66℃; McMurry Reaction; Inert atmosphere; | 80% |
| With tungsten(VI) chloride In tetrahydrofuran Ambient temperature; electrolysis; | 6% |
| With tetrahydrofuran; titanium(II) hydride; magnesium chloride In tetrahydrofuran at -68 - 20℃; | 64 % Chromat. |
- 119-61-9
benzophenone
- 67-64-1
acetone
A
- 563-79-1
2,3-Dimethyl-2-butene
B
- 781-33-9
2-methyl-1,1-diphenylpropene
C
- 632-51-9
1,1,2,2-tetraphenylethylene
| Conditions | Yield |
|---|---|
| With tin(IV) chloride; zinc In tetrahydrofuran at 64 - 66℃; for 1h; McMurry Reaction; Inert atmosphere; | A n/a B 80% C n/a |
- 55644-09-2
hexamethylsilirane
- 563-79-1
2,3-Dimethyl-2-butene
| Conditions | Yield |
|---|---|
| In benzene at 73℃; for 15h; | 77% |
- 52393-63-2
4,4,5,5-tetramethylethylene sulphate
- 563-79-1
2,3-Dimethyl-2-butene
| Conditions | Yield |
|---|---|
| In N,N-dimethyl-formamide at 20℃; Product distribution; electrolysis, oth. solvent, var. cathodes; | 66% |
- 55644-09-2
hexamethylsilirane
A
- 563-79-1
2,3-Dimethyl-2-butene
B
- 62346-42-3
octamethyl-1,2-disilacyclobutane
| Conditions | Yield |
|---|---|
| In benzene at 70℃; for 18h; | A 62% B 38% |
| Conditions | Yield |
|---|---|
| With hydrogen; Et4N | 60% |
| With bis(pentamethylcyclopentadienyl)titanium(III) hydride; hydrogen In (2)H8-toluene at 80℃; for 40h; Sealed tube; | 20% |
| With diethyl ether; ammonia; sodium |
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Chemistry
The molecular structure of 2-Butene, 2,3-dimethyl- (CAS NO.563-79-1) is
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IUPAC Name: 2,3-Dimethylbut-2-ene
Molecular Formula: C6H12
Molecular Weight: 84.16
EINECS: 209-263-8
Density: 0.696 g/cm3
Melting Point: -75 ºC
Boiling Point: 70.9 °C at 760 mmHg
Flash Point: -16 ºC
Freely Rotating Bonds: 0
Polar Surface Area: 0 Å2
Index of Refraction: 1.404
Molar Refractivity: 29.58 cm3
Molar Volume: 120.7 cm3
Polarizability: 11.73 10-24 cm3
Surface Tension: 18.4 dyne/cm
Enthalpy of Vaporization: 29.64 kJ/mol
Vapour Pressure: 138 mmHg at 25°C
Stability: stable, highly flammable - readily forms explosive mixtures with air.
Properties: colourless liquid
The Cas Register Number of 2-Butene, 2,3-dimethyl- is 563-79-1. The chemical synonyms of 2-Butene, 2,3-dimethyl- (CAS NO.563-79-1) are (CH3)2C=C(CH3)2 ; 1,1,2,2-Tetramethylethylene ; 2,3-dimethyl-2-buten ; 2,3-dimethyl-but-2-ene ; 2,3-Dimethylbut-2-ene ; 2,3-Dimethylbutene-2 ; Tetramethylethene ; Tetramethylethylene . Its product categories are Acyclic ; Alkenes ; Organic Building Blocks .
Uses
2-Butene, 2,3-dimethyl- (CAS NO.563-79-1) is used as organic intermediate.
Safety Profile
Hazard Codes: 
F,
Xn,
C
Risk Statements: 11-65-36/37/38-22-19
R11: Highly flammable. R65:Harmful: may cause lung damage if swallowed.
R36/37/38: Irritating to eyes, respiratory system and skin.
R22: Harmful if swallowed.
R19: May form explosive peroxides.
Safety Statements: 16-33-62-9-36/37/39-26
S16: Keep away from sources of ignition.
S33: Take precautionary measures against static discharges.
S62: If swallowed, do not induce vomitting; seek medical advice immediately and show this container or label.
S9: Keep container in a well-ventilated place.
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
RIDADR: UN 3295 3/PG 2
WGK Germany: 3
F: 10-23
Hazard Note: Extremely Flammable/Corrosive/Harmful
HazardClass: 3
PackingGroup: II
HS Code: 29012980