Cyclopentadiene supplier | CasNO.542-92-7

Name
1,3-Cyclopentadiene
EINECS 208-835-4
CAS No. 542-92-7
Article Data461
CAS DataBase
Density 0.878 g/cm³
Solubility 10.3 mM at 25 °C (shake flask-UV spectrophotometry, Streitwieser and Nebenzahl, 1976)
Melting Point - 97.2 C
Formula C₅H₆
Boiling Point 41.499 °C at 760 mmHg
Molecular Weight 66.1026
Flash Point
Transport Information
Appearance colourless liquid
Safety
Risk Codes
Molecular Structure
Hazard Symbols
Synonyms Cyclopentadiene;Pentole;Pyropentylene;R-Pentine;
PSA 0.00000
LogP 1.50250

Synthetic route

: 142-29-0
cyclopentene

: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
With n-butyllithium; potassium 2-methylbutan-2-olate In hexane 1) r.t., 14 h, 2) reflux, 5 h;	100%
at 850℃; Erhitzen unter vermindertem Druck;
With chromium (III)-oxide-aluminium oxide contacts at 450 - 500℃;
With palladium at 180 - 200℃;

: 3559-74-8
trimethylsilylcyclopentadiene

: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
With trifluoroacetic acid at 60℃; for 3h; Heating;	100%
With potassium tert-butylate In N,N,N,N,N,N-hexamethylphosphoric triamide at 60℃; for 3h;	100%

: 73138-26-8
manganocene

: 124-38-9
carbon dioxide

: 109-89-7
diethylamine

A: Mn(O2CN(C2H5)2)2

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In toluene under N2 or Ar;suspn. of Mn(cp)2 in toluene treated with stoicheiometric amt. of amine, clear soln, addn. of CO2, after 2 h no gas was uptaken; evapn.,;	A 99% B n/a

...Expand

: 16326-97-9, 16326-98-0, 59719-74-3
1,3-dihydroxycyclopentane

: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
With Nafion In water at 140℃; Temperature; Solvent; Reagent/catalyst;	99%
With H-USY zeolite In tetrahydrofuran at 249.84℃; Inert atmosphere;	93.8%

: 84651-76-3
(η-cyclopentadienyl)(η-cyclopentadiene)nickel tetrafluoroborate

: 603-36-1
triphenylantimony

A: 85836-36-8
[Ni(C5H5)(Sb(C6H5)3)2](1+)*BF4(1-)=[Ni(C5H5)(Sb(C6H5)3)2]BF4

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In diethyl ether under Ar, Ni complex in ether mixed with stibane ligand (molar ratio 1:2), stirred for 5 h at room temp.; filtered, washed with ether, dried in vac., elem. anal.;	A 98% B n/a

...Expand

: vanadocene

: 546-67-8
lead(IV) tetraacetate

A: {(η5-cyclopentadienyl)vanadium diacetate}2

B: 301-04-2
lead acetate

C: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In toluene molar ratio Cp2V/Pb-compound 1/1, sealed ampoule, 20°C, 48 h;	A 97% B n/a C 36.6%

...Expand

: 77-73-6, 933-60-8, 1755-01-7, 13257-74-4, 25850-35-5, 57429-84-2, 109428-68-4
dicyclopentadiene

: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
Heating;	96%
at 180℃;
In decalin at 180℃; Diels-Alder Cycloaddition; Inert atmosphere;

: 77-73-6, 933-60-8, 1755-01-7
bi(cyclopentadiene)

: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
at 160℃;	95%
at 350 - 400℃;	91%
at 210℃;	84.5%

: 79756-02-8, 79813-47-1
endo-4a-acetyl-2,3-dichloro-4a,5,8,8a-tetrahydro-5,8-methano-1,4-naphthoquinone

A: 542-92-7
cyclopenta-1,3-diene

: 79756-04-0
4-acetyl-6,7,7',8'-tetrachloro-3'aR*,9'bR*-dihydro-5,6',9'-trihydroxy-spiro<3H-benzofuran-2S*,5'(1'H)-cyclopenta<2>benzopyran>

Conditions

Conditions	Yield
In benzene-d6 at 80℃; for 6h; sealed n.m.r. sample tube;	A n/a B 95%

: 3048-65-5
bicyclo[4.3.0]nona-3,7-diene

: 77-73-6, 933-60-8, 1755-01-7, 13257-74-4, 25850-35-5, 57429-84-2, 109428-68-4
dicyclopentadiene

: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
With tert-butylhydroquinone In diphenylether at 215℃; for 2.58333h; Product distribution / selectivity;	94.19%

: vanadocene

: 5847-54-1
dibutyltin dibenzoate

A: 7440-31-5
tin

B: 2C5H5(1-)*2V(3+)*4OCOC6H5(1-) = [(C5H5)V(OCOC6H5)2]2

C: 4342-36-3
(Benzoyloxy)tributylstannan

D: 1191-48-6
dibutyltin

E: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In toluene molar ratio Cp2V/Sn-compound 1/2, sealed ampoule, 20°C, 24 h;	A n/a B 94% C n/a D n/a E 84%

...Expand

: 84651-76-3
(η-cyclopentadienyl)(η-cyclopentadiene)nickel tetrafluoroborate

: 23582-06-1
1-diphenylarsino-2-diphenylphosphinoethane

A: 85412-97-1
cyclopentadienylnickel(diphenylphosphino(diphenylarsino)ethylidene)

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In chloroform under Ar, Ni complex and ligand stirred in CHCl3 for 5 min; filtered, filtrate dropped in ether, filtered, dried in vac., elem. anal.;	A 93% B n/a

...Expand

: 211567-40-7
(S)-2-(2-Aza-bicyclo[2.2.1]hept-5-en-2-yl)-3-phenyl-propionic acid methyl ester

A: 2439-60-3, 27442-39-3
N-methyl-L-phenylalanine methyl ester

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
With triethylsilane; trifluoroacetic acid In chloroform for 20h; Ambient temperature;	A 92% B n/a

: (1R,4S,4aR,8aS)-1,4,5,6,7,8-Hexahydro-1,4-methano-naphthalene-4a,8a-dicarboxylic acid dimethyl ester

A: 4336-19-0
1,2-dimethyl cyclohex-1-ene-1,2-dicarboxylate

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In gas at 650℃;	A 92% B n/a

: 84651-76-3
(η-cyclopentadienyl)(η-cyclopentadiene)nickel tetrafluoroborate

: 24335-35-1
2,4-dichloro-1,3-di-tert-butyl-1,3,2,4-diazadiphosphetidine

A: 85413-22-5
[(C5H5)Ni(P2Cl2(NC(CH3)3)2)2](1+)*BF4(1-)=[(C5H5)Ni(P2Cl2(NC(CH3)3)2)2]BF4

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In chloroform under Ar, nickel complex and CHCl3 soln. of ligand (molar ratio 1:2) stirred at 0°C for 1 h; filtered, filtrate mixed with ether, decanted, washed with ether until solidification, dried in vac., elem. anal.;	A 92% B n/a

...Expand

: 247936-95-4
Tricyclo<5.2.1.02.6>deca-3,8-dien

: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
at 0 - 20℃; under 50 - 100 Torr; Temperature; Inert atmosphere; Large scale;	91.7%
at 158.5 - 220.7℃; Kinetics; Rate constant; Thermodynamic data; activation parameters: Ea, ΔH, ΔS;
at 160 - 170℃;

: 132785-65-0
C16H20O4

A: 132785-67-2
2,2-Dimethyl-cyclopenta-3,5-diene-1,3-dicarboxylic acid dimethyl ester

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In neat (no solvent) at 160℃;	A n/a B 91%
In neat (no solvent) at 160℃;	A 91% B n/a

: 93469-35-3
1-((1S,3R,7R)-4,4-Dioxo-4λ6-thia-tricyclo[5.2.1.02,6]dec-8-en-3-yl)-pentan-1-one

A: 542-92-7
cyclopenta-1,3-diene

B: 83339-20-2
trans-1,3-nonadien-5-one

Conditions

Conditions	Yield
at 650℃; under 0.01 Torr;	A n/a B 91%

: 112018-28-7, 112018-29-8, 126574-84-3
(S)-2-(2-Aza-bicyclo[2.2.1]hept-5-en-2-yl)-4-methyl-pentanoic acid methyl ester

: 76-05-1
trifluoroacetic acid

A: 542-92-7
cyclopenta-1,3-diene

B: 111934-20-4
dimethylleucine trifluoroacetate

Conditions

Conditions	Yield
With triethylsilane In chloroform for 20h; Ambient temperature;	A n/a B 91%

...Expand

: 148-24-3
8-quinolinol

: tris(cyclopentadienyl)ytterbium(III)

A: dicyclopentadienylytterbium 8-quinolinolate

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In tetrahydrofuran Addn. of Yb-complex soln to soln. of 8-hydroxyquinoline under Ar, stirring 24 h at room temp.; Concg., addn. of n-hexane pptd. a solid, washing (n-hexane), crystn. (THF/n-hexane), elem. anal.;	A 91% B n/a

...Expand

: 83927-51-9
(1S,3S,7R)-3-Pentyl-4-thia-tricyclo[5.2.1.02,6]dec-8-ene 4,4-dioxide

A: 77192-27-9
(E)-1,3-nonadiene

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
at 650℃; under 0.01 Torr;	A 90% B n/a
at 650℃; Yields of byproduct given;

: 91937-77-8
2-(5-Norbornen-2-yl)imidazol

A: 43129-93-7
2-vinyl imidazole

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
With 4-methoxy-phenol In methanol at 500℃;	A 90% B n/a

: 86593-81-9
((1S,3R,7R)-4,4-Dioxo-4λ6-thia-tricyclo[5.2.1.02,6]dec-8-en-3-yl)-trimethyl-silane

A: 71504-26-2
(E)-1-(trimethylsilyl)buta-1,3-diene

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
at 650℃; under 0.01 Torr;	A 89% B n/a

: vanadocene

: 56-36-0
tributyltin acetate

A: {(η5-cyclopentadienyl)vanadium diacetate}2

B: 813-19-4
bis(tri-n-butyltin)

C: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In neat (no solvent) molar ratio Cp2V/Sn-compound 1/2, sealed ampoule, 120°C, 16 h; elem. anal.;	A 89% B 10.07% C 58.5%

...Expand

: 111934-15-7, 112018-33-4, 112458-30-7, 112458-34-1
(S)-(2-Aza-bicyclo[2.2.1]hept-5-en-2-yl)-phenyl-acetic acid methyl ester

A: 542-92-7
cyclopenta-1,3-diene

B: 111934-22-6
methyl (2S)-(methylamino)(phenyl)acetate

Conditions

Conditions	Yield
With triethylsilane; trifluoroacetic acid In chloroform for 20h; Ambient temperature;	A n/a B 88%

: 59438-62-9
3-benzoyl-2-oxa-3-azabicyclo<2.2.1>hept-5-ene

: 100-46-9
benzylamine

A: 1485-70-7
N-benzylbenzamide

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In toluene at 80℃; for 20h; Product distribution; Mechanism; var. amine; determination of formed N2O; retro-Diels Alder dissociation;	A 88% B n/a

...Expand

: 84651-76-3
(η-cyclopentadienyl)(η-cyclopentadiene)nickel tetrafluoroborate

: 594-10-5
trimethylantimony

A: 85836-32-4
[Ni(C5H5)(Sb(CH3)3)2](1+)*BF4(1-)=[Ni(C5H5)(Sb(CH3)3)2]BF4

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In diethyl ether under Ar, Ni complex in ether mixed with stibane ligand (molar ratio 1:2), stirred for 5 h at room temp.; filtered, washed with ether, dried in vac., elem. anal.;	A 88% B n/a

...Expand

: tris(cyclopentadienyl)ytterbium(III)

: 95-55-6
2-amino-phenol

A: dicyclopentadienylytterbium o-aminophenolate

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In tetrahydrofuran Addn. of Yb-complex soln to soln. of o-aminophenol under Ar, stirring 24 h at room temp.; Concg., addn. of n-hexane pptd. a solid, washing (n-hexane), crystn. (THF/n-hexane), elem. anal.;	A 87% B n/a

...Expand

: 148-24-3
8-quinolinol

: 1080547-39-2
tris(cyclopentadienyl)neodymium(III)

A: dicyclopentadienylneodymium 8-quinolinolate

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In tetrahydrofuran Addn. of Nd-complex soln to soln. of 8-hydroxyquinoline under Ar, stirring 24 h at room temp.; Concg., addn. of n-hexane pptd. a solid, washing (n-hexane), crystn. (THF/n-hexane), elem. anal.;	A 87% B n/a

...Expand

: 85836-36-8
[Ni(C5H5)(Sb(C6H5)3)2](1+)*BF4(1-)=[Ni(C5H5)(Sb(C6H5)3)2]BF4

: 30224-53-4
bis(diphenylstibino)methane

A: 85836-38-0
[Ni(C5H5)(Sb(C6H5)2CH2Sb(C6H5)2)2](1+)*BF4(1-)=[Ni(C5H5)(Sb(C6H5)2CH2Sb(C6H5)2)2]BF4

B: 542-92-7
cyclopenta-1,3-diene

Conditions

Conditions	Yield
In chloroform under Ar, Ni complex in CHCl3 mixed at 0°C with stibane ligand (molar ratio 1:2), stirred for 10 min; filtered, to filtrate added ether, solid washed with ether, dried in vac., elem. anal.;	A 87% B n/a

...Expand

: 108-94-1
cyclohexanone

: 542-92-7
cyclopenta-1,3-diene

: 3141-04-6
cyclopenta-2,4-dien-1-ylidenecyclohexane

Conditions

Conditions	Yield
Stage #1: cyclohexanone; cyclopenta-1,3-diene With pyrrolidine In methanol at 20℃; Inert atmosphere; Stage #2: With acetic acid In methanol for 0.15h;	100%
In methanol for 0.416667h; Ambient temperature; new method;	96%
With pyrrolidine In methanol for 0.416667h; Ambient temperature;	96%

: 627-63-4
fumaryl dichloride

: 542-92-7
cyclopenta-1,3-diene

: 4582-21-2
endo,exo-bicyclo[2.2.1]hept-2-ene-5,6-dicarboxylic acid dichloride

Conditions

Conditions	Yield
In toluene Heating;	100%
With diethyl ether
In diethyl ether

: 542-92-7
cyclopenta-1,3-diene

: 292638-85-8
acrylic acid methyl ester

: 2903-75-5
(1S,2S,4S)-Bicyclo[2.2.1]hept-5-ene-2-carboxylic acid methyl ester

Conditions

Conditions	Yield
In water Ambient temperature;	100%
With 3-phenyl-propenal; bromocatecholborane In dichloromethane at -78℃; for 3h;	98%
With [BCl2(1-methylimidazole)][Al2Cl7] In neat (no solvent) at 0℃; for 0.0833333h; Diels-Alder Cycloaddition; Inert atmosphere;	93%

: 542-92-7
cyclopenta-1,3-diene

: 110-17-8
(2E)-but-2-enedioic acid

: 1200-88-0
norbornene-5,6-dicarboxylic acid

Conditions

Conditions	Yield
In water; acetone at 50℃; for 24h; Diels-Alder Cycloaddition;	100%
In 1,4-dioxane at 60℃; for 1h;	94%
With N,N-dimethyl-formamide andere polare Loesungsmittel;

: 542-92-7
cyclopenta-1,3-diene

: 67-64-1
acetone

: 2175-91-9
6,6'-dimethyl fulvene

Conditions

Conditions	Yield
Stage #1: cyclopenta-1,3-diene; acetone With pyrrolidine In methanol at 20℃; Inert atmosphere; Stage #2: With acetic acid In methanol for 0.15h;	100%
With pyrrolidine In methanol at -10 - 20℃; for 1h; Inert atmosphere;	100%
With methylamine for 4.5h;	92%

: 542-92-7
cyclopenta-1,3-diene

: 106-51-4
p-benzoquinone

: 51175-59-8
norbornenoquinone

Conditions

Conditions	Yield
In hexane; ethyl acetate at 0℃; for 3.5h; Diels-Alder Cycloaddition;	100%
In methanol at -78 - 0℃; Inert atmosphere; optical yield given as %de;	98%
In hexane; ethyl acetate at 0℃; for 4h; Diels-Alder reaction;	97%

: 542-92-7
cyclopenta-1,3-diene

: 142-45-0
Acetylenedicarboxylic acid

: 15872-28-3
bicyclo[2.2.1]hepta-2,5-diene-2,3-dicarboxylic acid

Conditions

Conditions	Yield
In 1,4-dioxane at 20℃; for 12h; Diels-Alder cycloaddition;	100%
In diethyl ether Ambient temperature;	85%
Stage #1: Acetylenedicarboxylic acid With (2-bromophenyl)boronic acid In dichloromethane at 25℃; for 0.166667h; Inert atmosphere; Stage #2: cyclopenta-1,3-diene In dichloromethane at 25℃; for 48h; Diels-Alder cycloaddition; Inert atmosphere;	84%

: 542-92-7
cyclopenta-1,3-diene

: 1972-28-7
diethylazodicarboxylate

: 14011-60-0
diethyl 2,3-diazanorbornene-2,3-dicarboxylate

Conditions

Conditions	Yield
In dichloromethane at 0℃;	100%
In diethyl ether at 0℃; for 12h;	100%
In diethyl ether; toluene at 20℃; for 21.5h; Reflux;	55%
With diethyl ether

: 542-92-7
cyclopenta-1,3-diene

: 764-42-1
1,2-Dicyanoethylene

: 6343-16-4, 24425-58-9, 38447-89-1, 51252-31-4
bicyclo<2.2.1>hept-5,6-ene-2α,3β-dicarbonitrile

Conditions

Conditions	Yield
In methanol at 0 - 20℃; Diels-Alder reaction;	100%
In methanol at 0℃; for 1h; Diels-Alder Cycloaddition;	99%
In 1,4-dioxane for 6h; Ambient temperature;	93%

: 542-92-7
cyclopenta-1,3-diene

: 1755-01-7
endo-Dicyclopentadien

Conditions

Conditions	Yield
In cyclohexane at 119.84℃; for 2h; Diels-Alder Cycloaddition;	100%

: 542-92-7
cyclopenta-1,3-diene

: 107-02-8
acrolein

: 19926-90-0
(+/-)-endo-bicyclo[2.2.1]hept-5-ene-2-carbaldehyde

Conditions

Conditions	Yield
With trityl tetrafluoroborate In dichloromethane at 20℃; for 16h; Diels-Alder Cycloaddition;	100%
With methyltrioxorhenium(VII) In chloroform for 1h; Ambient temperature;	90%
With 1-ethyl-3-methyl-1H-imidazol-3-ium chloride at 20℃; for 0.166667h; Diels-Alder reaction;	88%

: 108-31-6
maleic anhydride

: 542-92-7
cyclopenta-1,3-diene

: 129-64-6
3,6-endomethylene-1,2,3,6-tetrahydrophthalic anhydride

Conditions

Conditions	Yield
With 3-(n-butoxycarbonyl)-1-methylpyridinium bis(trifluoromethanesulfonyl)imide at 20℃; for 0.166667h; Diels-Alder reaction; diastereoselective reaction;	100%
With 1-hexyl-3-methylimidazolium tetrafluoroborate; K-10 montmorillonite at 20℃; for 0.0833333h; Diels-Alder reaction;	99%
In dichloromethane at 0 - 20℃; for 10h; Diels-Alder Cycloaddition; Inert atmosphere;	98%

: 941-69-5
N-phenyl-maleimide

: 542-92-7
cyclopenta-1,3-diene

: 26234-46-8, 29377-36-4, 56552-68-2
N-phenylbicyclo[2.2.1]hept-5-ene-2-endo,3-endo-dicarboximide

Conditions

Conditions	Yield
In neat (no solvent) at 20℃; for 0.0166667h; Diels-Alder Cycloaddition;	100%
With 1-hexyl-3-methylimidazolium tetrafluoroborate; K-10 montmorillonite at 20℃; for 0.0833333h; Diels-Alder reaction;	99%
With 3-(n-butoxycarbonyl)-1-methylpyridinium bis(trifluoromethanesulfonyl)imide at 20℃; for 0.166667h; Diels-Alder reaction; diastereoselective reaction;	97%

: 20212-13-9
1,3-diacetyl-2,3-dihydro-1H-imidazol-2-one

: 542-92-7
cyclopenta-1,3-diene

: 78932-02-2
(3aα,4α,7α,7aα)-1,3-diacetyl-1,3,3a,4,7,7a-hexahydro-4,7-methano-2H-benzimidazol-2-one

Conditions

Conditions	Yield
at 140℃; for 24h; Diels-Alder reaction;	100%
at 140℃; for 24h; Diels-Alder Cycloaddition; Sealed tube;	98.6%
In xylene at 180℃; selaed tube;	69%

: 50-00-0
formaldehyd

: 3287-99-8, 39110-74-2
benzylamine hydrochloride

: 542-92-7
cyclopenta-1,3-diene

: 112375-05-0
N-benzyl-2-azanorborn-5-ene

Conditions

Conditions	Yield
In water	100%
In water at 20℃; for 3h;	73%
In water for 3h; Ambient temperature; Yield given;
In water for 16h; Ambient temperature;	6.69 g
In water at 20℃; for 3h;

...Expand

: 41702-49-2
1-(chloromethyl)maleic anhydride

: 542-92-7
cyclopenta-1,3-diene

: 143668-21-7
(1S,2S,6S,7R)-2-Chloromethyl-4-oxa-tricyclo[5.2.1.02,6]dec-8-ene-3,5-dione

Conditions

Conditions	Yield
In diethyl ether 1) 0.5 h, reflux, 2) RT, 3 h;	100%

: 605-94-7
2,3-Dimethoxy-5-methyl-1,4-benzoquinone

: 542-92-7
cyclopenta-1,3-diene

: 4,5-dimethoxy-2-methyltricyclo<6.2.1.02,7>undeca-4,9-diene-3,6-dione

Conditions

Conditions	Yield
In dichloromethane for 96h; Ambient temperature;	100%

: 41726-06-1
4-oxopent-2-ynoic acid methyl ester

: 542-92-7
cyclopenta-1,3-diene

: 148042-65-3
3-Acetyl-bicyclo[2.2.1]hepta-2,5-diene-2-carboxylic acid methyl ester

Conditions

Conditions	Yield
In dichloromethane for 18h;	100%

: 421-59-0
trifluoromethyldiiodophosphine

: 542-92-7
cyclopenta-1,3-diene

: 104927-58-4
2,3-Bis-trifluoromethyl-2,3-diphospha-bicyclo[2.2.1]hept-5-ene

Conditions

Conditions	Yield
With tin(ll) chloride In tetrahydrofuran	100%

: 684-18-4
1,1-bis(trichlorosilyl)ethylene

: 542-92-7
cyclopenta-1,3-diene

: 120852-93-9
5,5-Bis-trichlorosilanyl-bicyclo[2.2.1]hept-2-ene

Conditions

Conditions	Yield
at 60 - 70℃; for 3h;	100%

: 481-39-0
5-hydroxynaphtho-1,4-quinone

: 542-92-7
cyclopenta-1,3-diene

: 163180-66-3
(1R*,4S*,4aR*,9aS*)-1,4,4a,9a-tetrahydro-5-hydroxy-1,4-methano-9,10-anthracenedione

Conditions

Conditions	Yield
In chloroform for 0.5h; Ambient temperature;	100%
In propan-1-ol at 25℃; Thermodynamic data; Rate constant; other solvents and their mixture with water; isobaric activation parameters;
In dichloromethane at 20℃; Reflux;

: 870-50-8
di-tert-butyl-diazodicarboxylate

: 542-92-7
cyclopenta-1,3-diene

: 39203-22-0
di-tert-butyl 2,3-diazabicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate

Conditions

Conditions	Yield
In dichloromethane at 0℃;	100%
In diethyl ether for 48h; Ambient temperature;	94%
In dichloromethane Inert atmosphere;	89%
In dichloromethane	89%
In diethyl ether at 0℃; for 12h;

: 1707-08-0
styrylphosphonic acid

: 542-92-7
cyclopenta-1,3-diene

: (3-phenylbicyclo<2.2.1>hept-5-en-2-yl)phosphonic acid

Conditions

Conditions	Yield
In diethyl ether for 72h; Ambient temperature;	100%
In diethyl ether at 20℃; for 48h;	91.5%

: 38940-10-2
2-benzylcyclohexa-2,5-diene-1,4-dione

: 542-92-7
cyclopenta-1,3-diene

: 100848-86-0, 117893-87-5
rel-(1S,4R,4aS,8aR)-6-benzyl-1,4,4a,8a-tetrahydro-1,4-methanonaphthalene-5,8-dione

Conditions

Conditions	Yield
for 0.416667h; Ambient temperature;	100%
In methanol at 25℃; Diels-Alder reaction;	82%

: 5145-42-6
2,3-dichloro-1,4-benzoquinone

: 542-92-7
cyclopenta-1,3-diene

: 82253-62-1
4,5-dichlorotricyclo<6.2.1.02,7>undeca-4,9-diene-3,6-dione

Conditions

Conditions	Yield
In diethyl ether at 20℃; for 5h; Diels-Alder reaction;	100%
In benzene Yield given;
In benzene Diels-Alder Cycloaddition;

: 85278-93-9
1,2-dichloro-1,2-dicyanoethylene

: 542-92-7
cyclopenta-1,3-diene

: 86165-09-5
2,3-Dichloro-bicyclo[2.2.1]hept-5-ene-2,3-dicarbonitrile

Conditions

Conditions	Yield
In dichloromethane at 25℃; for 72h;	100%

: 30685-19-9
2,3-Dichloro-5-methyl-2,5-cyclohexadiene-1,4-dione

: 542-92-7
cyclopenta-1,3-diene

: (1α,4α,4aβ,8aβ)-6,7-Dichloro-1,4,4a,8a-tetrahydro-4a-methyl-1,4-methanonaphthalene-5,8-dione

Conditions

Conditions	Yield
In methanol for 2h;	100%

: 104688-95-1
Oxo-(4-phenylazo-phenylamino)-dithioacetic acid methyl ester

: 542-92-7
cyclopenta-1,3-diene

: 110968-47-3
(1R,4S)-3-Methylsulfanyl-2-thia-bicyclo[2.2.1]hept-5-ene-3-carboxylic acid (4-phenylazo-phenyl)-amide

Conditions

Conditions	Yield
In chloroform Heating;	100%

Cyclopentadiene Consensus Reports

Reported in EPA TSCA Inventory.

Cyclopentadiene Standards and Recommendations

OSHA PEL: TWA 75 ppm
ACGIH TLV: TWA 75 ppm
DFG MAK: 75 ppm (210 mg/m³)

Cyclopentadiene Analytical Methods

For occupational chemical analysis use NIOSH: 1,3-Cyclopentadiene, 2523.

Cyclopentadiene Specification

The Cyclopentadiene, with the CAS registry number 542-92-7,is also known as 1,3-Cyclopentadiene. It belongs to the product categories of Organic matters. This chemical's molecular formula is C₅H₆ and molecular weight is 66.10.Its EINECS number is 542-92-7. What's more,Its systematic name is Cyclopentadiene.It is a colourless liquid which is stable at room temperature and incompatible with oxidizing agents, acids and a wide variety of other compounds.It may form peroxides in storage.And it may undergo spontaneous polymerisation. It Decomposes on heating,mixtures with air are explosive.It is used for organic synthetic intermediates, and manufacturing pesticides.In addition, it is mainly used for resin industry, synthetic rubber, etc.

Physical properties about Cyclopentadiene are:
(1)ACD/LogP: 2.087; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 2.09; (4)ACD/LogD (pH 7.4): 2.09; (5)ACD/BCF (pH 5.5): 22.72; (6)ACD/BCF (pH 7.4): 22.72; (7)ACD/KOC (pH 5.5): 325.50; (8)ACD/KOC (pH 7.4): 325.50; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Index of Refraction: 1.503; (13)Molar Refractivity: 22.266 cm³; (14)Molar Volume: 75.303 cm³; (15)Surface Tension: 34.859001159668 dyne/cm; (16)Density: 0.878 g/cm³; (17)Flash Point: -32.166 °C; (18)Enthalpy of Vaporization: 27.4 kJ/mol; (19)Boiling Point: 41.499 °C at 760 mmHg; (20)Vapour Pressure: 418.459991455078 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES:C1C=CC=C1;
(2)Std. InChI:InChI=1S/C5H6/c1-2-4-5-3-1/h1-4H,5H2 ;
(3)Std. InChIKey:ZSWFCLXCOIISFI-UHFFFAOYSA-N.

The toxicity data of Cyclopentadiene as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LC50	inhalation	14gm/m3 (14000mg/m3)	BEHAVIORAL: EXCITEMENT BEHAVIORAL: AGGRESSION BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)	Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 9(12), Pg. 13, 1965.
mouse	LD50	oral	800mg/kg (800mg/kg)		Toksikologiya Novykh Promyshlennykh Khimicheskikh Veshchestv. Toxicology of New Industrial Chemical Substances. For English translation, see TNICS*. Vol. 9, Pg. 27, 1967.
rabbit	LD50	skin	430mg/kg (430mg/kg)		National Technical Information Service. Vol. OTS0535718,
rat	LC50	inhalation	39gm/m3 (39000mg/m3)	BEHAVIORAL: AGGRESSION BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY) BEHAVIORAL: EXCITEMENT	Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 9(12), Pg. 13, 1965.
rat	LD50	oral	113mg/kg (113mg/kg)		National Technical Information Service. Vol. OTS0535718,

Product Name

1,3-Cyclopentadiene

Synthetic route

Cyclopentadiene Consensus Reports

Cyclopentadiene Standards and Recommendations

Cyclopentadiene Analytical Methods

Cyclopentadiene Specification

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