2,3-Dimethyl-2-butene supplier

Name
2,3-Dimethyl-2-butene
EINECS 209-263-8
CAS No. 563-79-1
Article Data304
CAS DataBase
Density 0.697 g/cm³
Solubility
Melting Point -75 °C
Formula C₆H₁₂
Boiling Point 70.92 °C at 760 mmHg
Molecular Weight 84.1613
Flash Point 2°F
Transport Information UN 3295 3/PG 2
Appearance colourless liquid
Safety 16-33-62-9
Risk Codes 11-65
Molecular Structure
Hazard Symbols F,Xn
Synonyms 1,1,2,2-Tetramethylethylene;2,3-Dimethyl-2-butene;NSC 73907;Tetramethylethene;Tetramethylethylene;
PSA 0.00000
LogP 2.36260

Synthetic route

: 563-78-0
2,3-Dimethyl-1-butene

: 563-79-1
2,3-Dimethyl-2-butene

Conditions

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

B: 3,3,4,4-Tetramethyl-1,2-diphenyl-3,4-dihydro-[1,2]disilete

C: C32H32Si2

Conditions

Conditions	Yield
In benzene at 150℃; for 2h;	A 70% B n/a C 85%

...Expand

: 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

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

...Expand

: 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

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

...Expand

: 67-64-1
acetone

: 563-79-1
2,3-Dimethyl-2-butene

Conditions

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

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

...Expand

: 55644-09-2
hexamethylsilirane

: 563-79-1
2,3-Dimethyl-2-butene

Conditions

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

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

Conditions	Yield
In benzene at 70℃; for 18h;	A 62% B 38%

: 513-81-5
2,3-dimethyl-buta-1,3-diene

: 563-79-1
2,3-Dimethyl-2-butene

Conditions

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

: 187737-37-7
propene

A: 563-79-1
2,3-Dimethyl-2-butene

B: 625-27-4
2-methyl-2-pentene

C: 763-29-1
2-Methyl-1-pentene

D: 4461-48-7
4-methyl-2-pentene

E: 691-37-2
4-Methyl-1-pentene

F: 563-78-0
2,3-Dimethyl-1-butene

G 1-hexene 2.2.percent.: 1-hexene 2.2.percent.

Conditions

Conditions	Yield
diethylaluminium chloride In benzene at 50℃; under 6840 Torr; for 2h; Product distribution; 0 - 60 deg C, 1 - 32 h, influence of the catalysts on the yields;	A 5.4% B 3.2% C 18.4% D 58.2% E 10.2% F 2.1% G n/a

...Expand

: 87050-44-0
(η5-pentamethylcyclopentadienyl)hafnium(2,3-dimethyl-1,3-butadiene)chloride

: 1333-74-0
hydrogen

A: 563-79-1
2,3-Dimethyl-2-butene

B: 113180-42-0
tetrakis{(pentamethylcyclopentadienyl)hafnium dihydride chloride}*(toluene)0.5

C: 79-29-8
2,3-dimethylbutane

Conditions

Conditions	Yield
In toluene A pressure vessel is filled with a soln. of (C5Me5)Hf(C6H10)Cl in toluene and charged with 10 atm of H2, reaction mixture is stirred overnight at 70°C under N2.; Excess H2 is released, hot soln. is transferred into a Schlenk vessel, cooling of the soln. to room temp., a bright yellow ppt. is formed, solvent is decanted, ppt. is redissolved (hot toluene), slow cooling to -30°C, elem. anal.;	A n/a B 56% C n/a

Yield

In toluene A pressure vessel is filled with a soln. of (C5Me5)Hf(C6H10)Cl in toluene and charged with 10 atm of H2, reaction mixture is stirred overnight at 70°C under N2.; Excess H2 is released, hot soln. is transferred into a Schlenk vessel, cooling of the soln. to room temp., a bright yellow ppt. is formed, solvent is decanted, ppt. is redissolved (hot toluene), slow cooling to -30°C, elem. anal.;

A n/a
B 56%
C n/a

...Expand

: 436-59-9
dimesitylfluoroborane

: [(HC{C(Me)N-2,6-i-Pr2C6H3}2)Mg(Bpin)(C{N(i-Pr)C(Me)}2)]

A: 563-79-1
2,3-Dimethyl-2-butene

B: C24H34B2O2

C: [HC{(Me)CN(2,6-iPr2C6H3)}2Mg{pinB}(DMAP)]

D: [{(HC{C(Me)N-2,6-i-Pr2C6H3}2)Mg}2(F)(O2BC{N(i-Pr)C(Me)}2)]

Conditions

Conditions	Yield
In (2)H8-toluene at 20℃; for 1h; Schlenk technique; Inert atmosphere; Glovebox;	A n/a B n/a C n/a D 53%

...Expand

: 513-81-5
2,3-dimethyl-buta-1,3-diene

A: 563-79-1
2,3-Dimethyl-2-butene

B: 79-29-8
2,3-dimethylbutane

C: 563-78-0
2,3-Dimethyl-1-butene

Conditions

Conditions	Yield
With hydrogen; palladium dichloride In N,N-dimethyl-formamide under 18751.5 Torr; for 0.25h; Product distribution; Ambient temperature; various time;	A 39.3% B 0.05% C 52.2%
With hydrogen; 1,5-hexadienerhodium(I)-chloride dimer In various solvent(s) for 2h; Ambient temperature; pH=7.6;	A 27% B 25% C 22%
With bis(1,5-cyclooctadiene)rhodium(I) tetrafluoroborate; hydrogen; disodium salt of the bis(m-sulfonatophenyl)-n-butylphosphane at 60℃; under 22502.3 Torr; for 6h; Ionic liquid; chemoselective reaction;

...Expand

: 4238-09-9
phenyl isopropyl sulfone

: 124-63-0
methanesulfonyl chloride

: 563-79-1
2,3-Dimethyl-2-butene

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran; acetone	52%

: 40754-58-3
3,6-Dihydro-4,5-dimethyl-2,2-diphenyl-2H-thiopyran

A: 632-15-5
3,4-dimethylthiophene

B: 563-79-1
2,3-Dimethyl-2-butene

C: 101-81-5
Diphenylmethane

D: 76390-41-5
3,4-Dimethyl-2-(diphenylmethyl)thiophen

Conditions

Conditions	Yield
at 240 - 260℃; for 0.333333h; Product distribution;	A 4 % Spectr. B 8 % Spectr. C 48% D 50%
at 240 - 260℃; for 0.333333h;	A 4 % Spectr. B 8 % Spectr. C 48% D 50%

...Expand

: 37044-85-2
Spiro

A: 632-15-5
3,4-dimethylthiophene

B: 92-83-1
xanthene

C: 563-79-1
2,3-Dimethyl-2-butene

D: 492-21-7
9H-xanthene-9-thione

E: 4381-14-0
9,9'-bixanthene

F: 513-81-5
2,3-dimethyl-buta-1,3-diene

Conditions

Conditions	Yield
at 240 - 260℃; for 0.333333h; Product distribution;	A 23 % Spectr. B 25% C 8 % Spectr. D 50% E 18% F 26 % Spectr.

...Expand

: 71169-48-7
Spiro

A: 632-15-5
3,4-dimethylthiophene

B: 261-31-4
thioxanthene

C: 563-79-1
2,3-Dimethyl-2-butene

D: 10496-86-3
9,9’-bithioxanthene

E: 76390-47-1
3,4-Dimethyl-2-(9'-thioxanthenyl)thiophen

F: 513-81-5
2,3-dimethyl-buta-1,3-diene

Conditions

Conditions	Yield
at 240 - 260℃; for 0.333333h; Product distribution;	A 35 % Spectr. B 48% C 7 % Spectr. D 10% E 11% F 7 % Spectr.

...Expand

: 115982-92-8
tantalum(η5-Cp)(2,3-dimethylbutadiene){C5H6O(isopropyl)2}

A: 563-79-1
2,3-Dimethyl-2-butene

B: 38443-89-9
2-methyl-3-isopropyl-6-hepten-3-ol

C: 563-78-0
2,3-Dimethyl-1-butene

Conditions

Conditions	Yield
Hydrolysis of starting compd.; Gas chromy.;	A 35% B 48% C 17%

...Expand

: 436-59-9
dimesitylfluoroborane

: [HC{(Me)CN(2,6-iPr2C6H3)}2Mg{pinB}(DMAP)]

A: 563-79-1
2,3-Dimethyl-2-butene

B: C24H34B2O2

C: {(HC{C(Me)N-2,6-i-Pr2C6H3}2)Mg}2(F)(O2BNC5H4-4-NMe2)

D: C18H22BF*C7H10N2

Conditions

Conditions	Yield
In (2)H8-toluene at 60℃; for 5h; Schlenk technique; Glovebox; Inert atmosphere;	A n/a B n/a C 48% D n/a

...Expand

: 55644-09-2
hexamethylsilirane

A: 563-79-1
2,3-Dimethyl-2-butene

B: Dimethyl-trichloromethyl-(1,1,2-trimethyl-propyl)-silane

C: Chloro-dimethyl-(1,1,2-trimethyl-allyl)-silane

D: Dimethyl-trichloromethyl-(1,1,2-trimethyl-allyl)-silane

Conditions

Conditions	Yield
With tetrachloromethane In tetrahydrofuran for 1h; Ambient temperature;	A n/a B 19% C 20% D 41%

...Expand

: 75-69-4
trichlorofluoromethane

: 77-76-9
2,2-dimethoxy-propane

A: 563-79-1
2,3-Dimethyl-2-butene

B: 67-63-0
isopropyl alcohol

C: 79-31-2
isobutyric Acid

Conditions

Conditions	Yield
With lithium aluminium tetrahydride; titanium(IV) iodide In tetrahydrofuran at -5℃; for 0.5h;	A 18% B 12% C 38%

...Expand

: 187737-37-7
propene

A: 563-79-1
2,3-Dimethyl-2-butene

B: 625-27-4
2-methyl-2-pentene

C: 4050-45-7
trans-2-hexene

D: 674-76-0
(E)-4-methylpent-2-ene

Conditions

Conditions	Yield
(C3H5)2AlCl; Ni(C6H7O2)2; triphenylphosphine Further byproducts given. Title compound not separated from byproducts;	A 2% B 25% C 16% D 17.7%

...Expand

: 35913-82-7
cyclopentadienylirondicarbonyl hydride

: 513-81-5
2,3-dimethyl-buta-1,3-diene

A: 563-79-1
2,3-Dimethyl-2-butene

B: 38117-54-3
cyclopentadienyl iron(II) dicarbonyl dimer

C: η5-C5H5Fe(CO)2CH2CMe=CMe2

D: 563-78-0
2,3-Dimethyl-1-butene

Conditions

Conditions	Yield
In pentane under N2, stirring at room temp, the react. was complete within about 1 h; evapn. (vac.), chromy. on alumina (eluent pentane for the hydrometalated products, and more polar solvents for the dimer), elem. anal., (the org. products identified by GC and NMR);	A n/a B 20% C 8% D n/a

...Expand

: 594-20-7
2,2-dichloropropane

A: 563-79-1
2,3-Dimethyl-2-butene

B: 557-98-2
2-chloropropene

C: 75-29-6
isopropyl chloride

Conditions

Conditions	Yield
With iron pentacarbonyl at 140℃; for 3h; Product distribution; various reaction conditions;	A 8% B 5% C 16%

...Expand

: 811-98-3
d(4)-methanol

: 30467-62-0
3,3,5,5-tetramethyl-3,5-dihydro-4H-pyrazol-4-one

A: 563-79-1
2,3-Dimethyl-2-butene

B: C8H12(2)H4O2

C: 627-70-3
propan-2-one azine

Conditions

Conditions	Yield
at 5℃; for 6h; Irradiation;	A 1% B 11% C 5%

...Expand

: 68258-20-8
2-(2,2-dimethylcyclopropyl)acetic acid

A: 563-79-1
2,3-Dimethyl-2-butene

B: 558-37-2
tert-butylethylene

C: 691-37-2
4-Methyl-1-pentene

D: 563-78-0
2,3-Dimethyl-1-butene

E CO2: CO2

Conditions

Conditions	Yield
at 496.9℃; for 0.25h; Product distribution; Thermodynamic data; Rate constant;	A 11% B n/a C n/a D n/a E n/a

...Expand

: 91-22-5
quinoline

: 594-52-5
2-bromo-2,3-dimethylbutane

: 563-79-1
2,3-Dimethyl-2-butene

: 598-26-5
dimethylketene

A: 563-79-1
2,3-Dimethyl-2-butene

B: 187737-37-7
propene

Conditions

Conditions	Yield
With silver at 600 - 700℃; beim Ueberleiten unter vermindertem Druck;
With silver at 600 - 700℃;

: 85-44-9
phthalic anhydride

: 464-07-3, 20281-91-8
3,3-dimethyl-2-butanol

: 98-11-3
benzenesulfonic acid

A: 563-79-1
2,3-Dimethyl-2-butene

B: 558-37-2
tert-butylethylene

C: 563-78-0
2,3-Dimethyl-1-butene

...Expand

2,3-Dimethyl-2-butene Chemical Properties

The molecular structure of 2-Butene, 2,3-dimethyl- (CAS NO.563-79-1) is

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^-24cm³
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 .

2,3-Dimethyl-2-butene Uses

2-Butene, 2,3-dimethyl- (CAS NO.563-79-1) is used as organic intermediate.

2,3-Dimethyl-2-butene Safety Profile

Hazard Codes: F, Harmful Xn, Corrosive 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

Product Name

2,3-Dimethyl-2-butene

Synthetic route

2,3-Dimethyl-2-butene Chemical Properties

2,3-Dimethyl-2-butene Uses

2,3-Dimethyl-2-butene Safety Profile

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