1,2,3,4-Tetramethyl-1,3-cyclopentadiene supplier

Name
1,2,3,4-Tetramethyl-1,3-cyclopentadiene
EINECS
CAS No. 4249-10-9
Article Data25
CAS DataBase
Density 0.83 g/cm³
Solubility
Melting Point
Formula C₉H₁₄
Boiling Point 146.816 °C at 760 mmHg
Molecular Weight 122.21
Flash Point 27.51 °C
Transport Information UN 3295 3/PG 3
Appearance light yellow liquid
Safety 16
Risk Codes 10
Molecular Structure
Hazard Symbols R10:;
Synonyms Cyclopentadiene,1,2,3,4-tetramethyl- (7CI);1,2,3,4-Tetramethylcyclopentadiene;
PSA 0.00000
LogP 3.06290

Synthetic route

: 82061-20-9
2,3,4,5-tetramethylcyclopent-2-en-1-ol

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
With Dandong Pearl-H type cation exchange resin In diethyl ether at 25℃; Reagent/catalyst;	82%
With sulfuric acid at 50℃; for 0.5h; Temperature;	55.3%
toluene-4-sulfonic acid In diethyl ether for 0.333333h; Ambient temperature; Yield given;
With toluene-4-sulfonic acid In benzene Ambient temperature; Yield given;
With iodine In diethyl ether Yield given;

: 164528-21-6
(C5Me4H)2Yb(THF)2

: 49673-43-0
N1,N2-bis(2,6-dimethylphenyl)ethane-1,2-diimine

A: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

B: C31H41N2OYb

Conditions

Conditions	Yield
Stage #1: (C5Me4H)2Yb(THF)2; N1,N2-bis(2,6-dimethylphenyl)ethane-1,2-diimine In tetrahydrofuran at 40℃; for 0.5h; Schlenk technique; Glovebox; Stage #2: In toluene at 60℃; for 5h; Schlenk technique; Glovebox;	A 78% B 49%

...Expand

: 54458-61-6
2,3,4,5-tetramethyl-2-cyclopenten-1-one

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
With lithium aluminium tetrahydride; sulfuric acid Heating;	75%
Stage #1: 2,3,4,5-tetramethyl-2-cyclopenten-1-one With lithium aluminium tetrahydride In diethyl ether for 2h; Stage #2: With hydrogenchloride; air In diethyl ether; water for 16h;	37%
Multi-step reaction with 2 steps 1: LiAlH4 2: p-TsOH / benzene / Ambient temperature View Scheme
With sodium tetrahydroborate In ethanol

: 49587-60-2
(2E,5E)-3,5-dimethylhepta-2,5-dien-4-ol

A: chlorotetramethylcyclopentene

B: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
With hydrogenchloride In diethyl ether; water at 20℃; for 2 - 4h;	A 15% B 75%

: N’-(2,3,4,5-tetramethylcyclopent-2-ene-ylidene)tosylhydrazide

A: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

B: C9H12S

C: 7727-37-9
nitrogen

Conditions

Conditions	Yield
With methyllithium In diethyl ether Schlenk technique;	A 68% B n/a C n/a

...Expand

: 164528-21-6
(C5Me4H)2Yb(THF)2

: 1,4-bis(2,6-diisopropylphenyl)-2,3-dimethyl-1,4-diazabuta-1,3-diene

A: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

B: C41H61N2OYb

C: C27H39Yb

Conditions

Conditions	Yield
Stage #1: (C5Me4H)2Yb(THF)2; 1,4-bis(2,6-diisopropylphenyl)-2,3-dimethyl-1,4-diazabuta-1,3-diene In tetrahydrofuran at 40℃; for 0.5h; Schlenk technique; Glovebox; Stage #2: In toluene at 60℃; for 4h; Schlenk technique; Glovebox;	A 64% B 35% C 10%

...Expand

: 90644-55-6
1,1,2,3-Tetramethyl-4-methylen-cyclobuten-(2)

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
With sulfuric acid In tetrachloromethane

: 77-78-1
dimethyl sulfate

: 4984-82-1
sodium cyclopentadienylide

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
With sodium amide In ammonia

: 73659-32-2
1,2,3,4-Tetramethyl-cyclopent-3-enol

A: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

B: 10060-55-6
1,2,3,5-tetramethylcyclopenta-1,3-diene

C: 10060-56-7
1,3,4,5-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
Heating; Title compound not separated from byproducts;

...Expand

: 90002-77-0
1-chloro-1,3,4-trimethyl-2-methylene-3-cyclobutene

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: diethyl ether 2: H2SO4 / CCl4 View Scheme

: 54458-60-5
2,3,5,6-tetrahydro-2,3,5,6-tetramethyl-γ-pyrone

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1: 75 percent / p-TsOH / toluene 2: 75 percent / LiAlH4; aq. H2SO4 / Heating View Scheme

: 52883-78-0
(E)-4-methylhex-4-en-3-one

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1: 54 percent / KOH / methanol 2: 75 percent / p-TsOH / toluene 3: 75 percent / LiAlH4; aq. H2SO4 / Heating View Scheme

: 96-22-0
pentan-3-one

halobenzene: halobenzene

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
Multi-step reaction with 4 steps 1: 57 percent / KOH / methanol 2: 54 percent / KOH / methanol 3: 75 percent / p-TsOH / toluene 4: 75 percent / LiAlH4; aq. H2SO4 / Heating View Scheme

: 83321-16-8
2,3,4-trimethylcyclopent-2-enone

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 2: Heating View Scheme

: monoaluminum phosphate

: 82061-20-9
2,3,4,5-tetramethylcyclopent-2-en-1-ol

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

amberlyst-15 resin: amberlyst-15 resin

: 2,3,4-trimethyl-1,4-hexadien-3-ol

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
In pentane

: 74-87-3
methylene chloride

: 3853-27-8
1,2,3-trimethylcyclopentadiene

: methyl tributylammonium chloride

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
With sodium hydroxide

...Expand

: 16532-02-8
bromomethyldimethylsilyl chloride

: potassium 2,3,4,5-tetramethyl cyclopentadienyl

A: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

B: C21H34Si

Conditions

Conditions	Yield
In tetrahydrofuran at -78℃; Inert atmosphere; Schlenk technique; Reflux;

...Expand

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 106-51-4
p-benzoquinone

: 1,2,3,4-tetramethyl-1,4,4a,8a-tetrahydro-1,4-methanonaphthalene-5,8-dione

Conditions

Conditions	Yield
In benzene at 30℃; for 4h;	99%

: 109-99-9
tetrahydrofuran

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: C9H13(1-)*Na(1+)*2C4H8O

Conditions

Conditions	Yield
With sodium hydride for 24h; Reflux;	98.1%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 13894-21-8
ethynyl p-tolyl sulfone

: C18H22O2S

Conditions

Conditions	Yield
at 80℃; Inert atmosphere; neat (no solvent);	98%

: 14285-68-8
decacarbonyldirhenium(0)

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 111405-95-9
tricarbonyl(η5-tetramethylcyclopentadienyl)rhenium

Conditions

Conditions	Yield
at 150 - 210℃; for 5.66667h; Inert atmosphere; Schlenk technique;	98%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 2-butyl-5-nitroso-1H-benzo[de]isoquinoline-1,3(2H)-dione

: 2-butyl-5-(5,6,6a-trimethyl-3,3a,4,6a-tetrahydro-2H-cyclopenta[d]isoxazol-2-yl)-1H-benzo[de]isoquinoline-1,3(2H)-dione

Conditions

Conditions	Yield
In acetonitrile at 20℃; for 0.0833333h;	97%

: 109-99-9
tetrahydrofuran

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: C9H13(1-)*K(1+)*2C4H8O

Conditions

Conditions	Yield
With potassium hydride for 24h; Reflux;	96.5%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 670-54-2
ethenetetracarbonitrile

: 140137-40-2
5,5,6,6-tetracyano-1,2,3,4-tetramethylbicyclo<2.2.1>hept-2-ene

Conditions

Conditions	Yield
In benzene at 25℃; Thermodynamic data; ΔH;	96%
In benzene for 1.5h;	96%
In 1,4-dioxane at 25℃; Rate constant; Thermodynamic data; ΔH;

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 2372-33-0
chlorodimethyl(4-methoxyphenyl)silane

: 1-dimethyl(4-methoxyphenyl)silyl-2,3,4,5-tetramethylcyclopentadiene

Conditions

Conditions	Yield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With sodium hydride; aniline In tetrahydrofuran at 50℃; for 2.5h; Stage #2: chlorodimethyl(4-methoxyphenyl)silane In tetrahydrofuran; toluene at 0 - 20℃;	95.5%

: 825-44-5
benzothiophene-1,1-dioxide

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: endo-1,11,12,13-tetramethyl-3-thiatetracyclo[9.2.11,11.02,10.04,9]tetradeca-4,6,8,12-tetraene S,S-dioxide

Conditions

Conditions	Yield
at 100℃; for 6h; Diels-Alder reaction; neat (no solvent); stereoselective reaction;	95%

: 12097-36-8
di-μ-acetato-bis(η4-1,5-cyclooctadiene)dirhodium(I)

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: (Me4Cp)Rh(cod)

Conditions

Conditions	Yield
In methanol; toluene at 23℃;	95%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: C99H132Th

: 1333-74-0
hydrogen

: C88H128OTh

Conditions

Conditions	Yield
at 20℃; under 15201 Torr; for 12h; Inert atmosphere; Schlenk technique;	93%

...Expand

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 2-butyl-6-nitroso-1H-benzo[de]isoquinoline-1,3(2H)-dione

: 2-butyl-6-(hydroxy(1,3,4-trimethyl-2-methylenecyclopent-3-en-1-yl)amino)-1H-benzo[de]isoquinoline-1,3(2H)-dione

Conditions

Conditions	Yield
In acetonitrile at 20℃; for 0.0833333h; Kinetics; Solvent;	93%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: N-butyl-5-nitrosonaphthalene-1-sulfonamide

: N-butyl-5-(hydroxy(1,3,4-trimethyl-2-methylenecyclopent-3-en-1-yl)amino)naphthalene-1-sulfonamide

Conditions

Conditions	Yield
In acetonitrile at 20℃; for 0.0833333h;	91%

: 20717-86-6
triisopropoxytitanium(IV) chloride

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: (η5-tetramethylcyclopentadienyl)triisopropoxytitanium

Conditions

Conditions	Yield
With n-butyllithium In tetrahydrofuran; hexane Ar-atmosphere; addn. of BuLi (in hexane) to C5HMe4 (in THF, 0°C), warming to room temp., stirring (6 h), dropwise addn. of Ti-complex (in THF, -78°C), warming to room temp., stirring (12 h); solvent removal (vac.), extn. (pentane), filtration (Celite), solvent removal (vac.), chromy. (Bio-Beads); distillable (125-135°C, 1E-3 Torr); elem. anal.;	90%

: 109-72-8, 29786-93-4
n-butyllithium

: 3634-56-8
isopropyldimethylsilyl chloride

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 879549-46-9
5-(isopropyldimethylsilyl)-1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions

Conditions	Yield
Stage #1: n-butyllithium; 1,2,3,4-tetramethylcyclopenta-1,3-diene In tetrahydrofuran; hexane Stage #2: isopropyldimethylsilyl chloride In tetrahydrofuran; hexane	89%

...Expand

: 108-31-6
maleic anhydride

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: C12H16O3

Conditions

Conditions	Yield
at 130℃; Inert atmosphere; neat (no solvent);	89%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 111784-85-1
Chlorodimethyl-(2,4,6-trimethylphenyl)silane

: 1-dimethyl(2,4,6-trimethylphenyl)silyl-2,3,4,5-tetramethylcyclopentadiene

Conditions

Conditions	Yield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With sodium hydride; aniline In tetrahydrofuran at 50℃; for 2h; Stage #2: Chlorodimethyl-(2,4,6-trimethylphenyl)silane In tetrahydrofuran; toluene at 0 - 20℃;	87.3%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 13380-67-1
N-(4-bromophenyl)maleimide

: 140137-41-3
1,2,3,4-tetramethylbicyclo<2.2.1>hept-2-ene-5,6-dicarboxylic acid p-bromophenylimide

Conditions

Conditions	Yield
In 1,4-dioxane at 25℃; Rate constant; Thermodynamic data; activation enthalpy ΔH(excit.) and entropy ΔS(excit.);	87%
In 1,4-dioxane	87%
at 25℃; Rate constant;

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 17146-08-6
dimethyl(2-phenylethyl)chlorosilane

: 511551-21-6
1,2,3,4-tetramethyl-5-(dimethylphenethylsilyl)cyclopenta-1,3-diene

Conditions

Conditions	Yield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In hexane Stage #2: dimethyl(2-phenylethyl)chlorosilane In tetrahydrofuran	87%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 133538-12-2
chlorodimethyl(3,5-dimethylphenyl)silane

: 1-dimethyl(3,5-dimethylphenyl)silyl-2,3,4,5-tetramethylcyclopentadiene

Conditions

Conditions	Yield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With sodium hydride; aniline In tetrahydrofuran at 50℃; for 2h; Stage #2: chlorodimethyl(3,5-dimethylphenyl)silane In tetrahydrofuran; toluene at 0 - 20℃;	87%
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With sodium hydride; aniline In tetrahydrofuran at 50℃; for 2h; Stage #2: chlorodimethyl(3,5-dimethylphenyl)silane In tetrahydrofuran; toluene at 0 - 20℃;	87%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 144-79-6
chloromethyldiphenylsilane

: 1-methyldiphenylsilyl-2,3,4,5-tetramethylcyclopentadiene

Conditions

Conditions	Yield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With sodium hydride; aniline In tetrahydrofuran at 50℃; for 2h; Stage #2: chloromethyldiphenylsilane In tetrahydrofuran; toluene at 20 - 35℃;	86.5%

: 188021-37-6
[2-(allyloxy)-3-tert-butyl-5-methylphenyl](chloro)dimethylsilane

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 188021-39-8
[2-(allyloxy)-3-tert-butyl-5-methylphenyl](dimethyl)(2,3,4,5-tetramethylcyclopenta-2,4-dien-1-yl)silane

Conditions

Conditions	Yield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With sodium hydride; aniline In tetrahydrofuran at 50℃; Stage #2: [2-(allyloxy)-3-tert-butyl-5-methylphenyl](chloro)dimethylsilane In tetrahydrofuran; toluene at 20℃; for 1h; Further stages.;	86%

: 13528-93-3
1,2-bis-(chlorodimethylsilyl)ethane

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 100516-68-5
1,1'-<1,2-Ethandiylbis(dimethylsilyl)>bis(2,3,4,5-tetramethyl-2,4-cyclopentadien)

Conditions

Conditions	Yield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In tetrahydrofuran; hexane at 20℃; for 3h; Stage #2: 1,2-bis-(chlorodimethylsilyl)ethane In tetrahydrofuran; hexane for 8h; Heating;	85%
With n-butyllithium In tetrahydrofuran; hexane for 24h; Heating;	72%

: scandium tris(ortho-N,N-dimethylaminobenzyl)

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 959614-09-6
[(η5-teramethylcyclopentadienyl)Sc(III)(o-dimethylaminobenzyl)2]

Conditions

Conditions	Yield
In tetrahydrofuran byproducts: CH3C6H4NMe2; 1 equiv. of H2C5Me4 at 70°C;	85%

: 131296-74-7
Os(hydride)6(triisopropylphosphine)2

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 1313012-43-9
[OsH3(η5-tetramethylcyclopentadienyl)(P(i-Pr)3)]

Conditions

Conditions	Yield
In octane byproducts: P(i-Pr)3, hydrogen; using Schlenk techniques; treatment of soln. of OsH6(P(i-Pr)3)2 in n-octane with 6 equiv. of tetramethylcyclopentadiene, reflux for 4 h; filtration, removal of solvent in vac.; as oil;	85%

: 244011-92-5
OsH3Cl(PPh3)3

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 1239498-09-9
[(η5-C5Me4H)OsCl(PPh3)2]

Conditions

Conditions	Yield
In toluene (N2); std. Schlenk technique; mixt. of diene (1.5 equiv.) and Os complexin toluene was refluxed for 4 h; evapd. (vac.); washed (hexane, Et2O); dried (vac.); elem. anal.;	84.1%

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 768-33-2
phenyldimethylsilyl chloride

: 127793-19-5
1,2,3,4-tetramethyl-5-(dimethylphenylsilyl)cyclopenta-1,3-diene

Conditions

Conditions	Yield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In hexane Stage #2: phenyldimethylsilyl chloride In tetrahydrofuran	84%

: 541-59-3
maleiimide

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 1185256-09-0
1,7,8,9-tetramethyl-4-aza-tricyclo[5.2.1.0(2,6)]dec-8-ene-3,5-dione

Conditions

Conditions	Yield
In benzene for 6h; Diels-Alder reaction; Heating;	84%
In methanol at 22℃; under 760.051 Torr; Kinetics;

: 4249-10-9
1,2,3,4-tetramethylcyclopenta-1,3-diene

: 75-78-5
dimethylsilicon dichloride

: 125542-03-2
1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene

Conditions

Conditions	Yield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In diethyl ether; hexane Stage #2: dimethylsilicon dichloride In tetrahydrofuran	83%
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In tetrahydrofuran at -78 - 20℃; Schlenk technique; Stage #2: dimethylsilicon dichloride In tetrahydrofuran; hexane at 20℃; Schlenk technique;	83%
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In tetrahydrofuran at -78 - 20℃; Schlenk technique; Stage #2: dimethylsilicon dichloride In tetrahydrofuran; hexane at -78 - 20℃; Schlenk technique;	83%

1,2,3,4-Tetramethyl-1,3-cyclopentadiene Specification

The 1,2,3,4-Tetramethyl-1,3-cyclopentadiene with cas registry number of 4249-10-9, belongs to the following product categories: (1)Alkenes; (2)Cyclic; (3)Organic Building Blocks. Its systematic name and IUPAC name are the same, which is 1,2,3,4-tetramethylcyclopenta-1,3-diene.

Physical properties about this chemical are: (1)ACD/LogP: 4.15; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 4.15; (4)ACD/LogD (pH 7.4): 4.15; (5)ACD/BCF (pH 5.5): 836.73; (6)ACD/BCF (pH 7.4): 836.73; (7)ACD/KOC (pH 5.5): 4301.18; (8)ACD/KOC (pH 7.4): 4301.18; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 0 Å²; (13)Index of Refraction: 1.47; (14)Molar Refractivity: 41.08 cm³; (15)Molar Volume: 147.2 cm³; (16)Polarizability: 16.28×10^-24cm³; (17)Surface Tension: 22.6 dyne/cm; (18)Enthalpy of Vaporization: 36.8 kJ/mol; (19)Vapour Pressure: 5.76 mmHg at 25°C.

Preparation: this chemical can be prepared by 2,3,4,5-tetramethyl-2-cyclopentenone (cis+trans). This reaction will need reagent LiAlH4
aq. H2SO4. The yield is about 75%.

Uses of 1,2,3,4-Tetramethyl-1,3-cyclopentadiene: it can be used to produce 5,5,6,6-tetracyano-1,2,3,4-tetramethylbicyclo[2.2.1]hept-2-ene. This reaction will need reagent benzene with reaction temperature of 25 ℃. The yield is about 96%.

When you are using this chemical, please be cautious about it as the following:
The 1,2,3,4-Tetramethyl-1,3-cyclopentadiene is flammable, so keep it away from sources of ignition.

You can still convert the following datas into molecular structure:
(1)SMILES: C1(=C(/C(=C(/C)C1)C)C)\C;
(2)InChI: InChI=1/C9H14/c1-6-5-7(2)9(4)8(6)3/h5H2,1-4H3;
(3)InChIKey: VNPQQEYMXYCAEZ-UHFFFAOYAA;
(4)Std. InChI: InChI=1S/C9H14/c1-6-5-7(2)9(4)8(6)3/h5H2,1-4H3;
(5)Std. InChIKey: VNPQQEYMXYCAEZ-UHFFFAOYSA-N

Product Name

1,2,3,4-Tetramethyl-1,3-cyclopentadiene

Synthetic route

1,2,3,4-Tetramethyl-1,3-cyclopentadiene Specification

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