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inquiry1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE CAS:4249-10-9 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high qu
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inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
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inquiryHenan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
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inquirysuperior quality moderate price & quick delivery Appearance:light yellow liquid Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Application:Used to make
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inquiryA substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
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inquiryJ&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia
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inquiryZibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
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inquiry1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE Basic information Product Name: 1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE Synonyms: 1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE;1,2,3,4-TETRAMETHYLCYCLOPENTADIENE;TETRAMETHYLCYCLOPENTADIENE;tetramethylcyclopent
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inquiryfactory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B
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inquiryShandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W
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inquiry1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer
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inquiryhigh purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
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inquirybulk productiongoods in stockswe have the best competitive price in the marketmeantime,we are committed to service to our every customer Chemsigma International Co.,Ltd. is a chemical manufacturer, specialize in custom synthesis and organic chemical
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inquiryHunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L to 8000L. With complete auxiliary equipment as
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inquiryAnsciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali
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inquiry(CAS No.:4249-10-9)1,2,3,4-tetramethyl-1,3-cyclopentadiene Application:(CAS No.:4249-10-9)1,2,3,4-tetramethyl-1,3-cyclopentadiene
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inquiryWe are committed to providing our customers with the best products and services at the most competitive prices.Appearance:white to yellow powder Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use as
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inquiry1,3-Cyclopentadiene,1,2,3,4-tetramethyl-Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:pharmaceutical intermediate Transportation:by air, by sea, by express
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
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inquiry2,3,4,5-tetramethylcyclopent-2-en-1-ol
1,2,3,4-tetramethylcyclopenta-1,3-diene
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; |
(C5Me4H)2Yb(THF)2
N1,N2-bis(2,6-dimethylphenyl)ethane-1,2-diimine
A
1,2,3,4-tetramethylcyclopenta-1,3-diene
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% |
2,3,4,5-tetramethyl-2-cyclopenten-1-one
1,2,3,4-tetramethylcyclopenta-1,3-diene
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 |
(2E,5E)-3,5-dimethylhepta-2,5-dien-4-ol
B
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
With hydrogenchloride In diethyl ether; water at 20℃; for 2 - 4h; | A 15% B 75% |
Conditions | Yield |
---|---|
With methyllithium In diethyl ether Schlenk technique; | A 68% B n/a C n/a |
(C5Me4H)2Yb(THF)2
A
1,2,3,4-tetramethylcyclopenta-1,3-diene
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% |
1,1,2,3-Tetramethyl-4-methylen-cyclobuten-(2)
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
With sulfuric acid In tetrachloromethane |
dimethyl sulfate
sodium cyclopentadienylide
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
With sodium amide In ammonia |
1,2,3,4-Tetramethyl-cyclopent-3-enol
A
1,2,3,4-tetramethylcyclopenta-1,3-diene
B
1,2,3,5-tetramethylcyclopenta-1,3-diene
C
1,3,4,5-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
Heating; Title compound not separated from byproducts; |
1-chloro-1,3,4-trimethyl-2-methylene-3-cyclobutene
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: diethyl ether 2: H2SO4 / CCl4 View Scheme |
2,3,5,6-tetrahydro-2,3,5,6-tetramethyl-γ-pyrone
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 75 percent / p-TsOH / toluene 2: 75 percent / LiAlH4; aq. H2SO4 / Heating View Scheme |
(E)-4-methylhex-4-en-3-one
1,2,3,4-tetramethylcyclopenta-1,3-diene
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 |
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 |
2,3,4-trimethylcyclopent-2-enone
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 2: Heating View Scheme |
2,3,4,5-tetramethylcyclopent-2-en-1-ol
1,2,3,4-tetramethylcyclopenta-1,3-diene
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
In pentane |
methylene chloride
1,2,3-trimethylcyclopentadiene
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
With sodium hydroxide |
bromomethyldimethylsilyl chloride
A
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
In tetrahydrofuran at -78℃; Inert atmosphere; Schlenk technique; Reflux; |
Conditions | Yield |
---|---|
In benzene at 30℃; for 4h; | 99% |
Conditions | Yield |
---|---|
With sodium hydride for 24h; Reflux; | 98.1% |
Conditions | Yield |
---|---|
at 80℃; Inert atmosphere; neat (no solvent); | 98% |
decacarbonyldirhenium(0)
1,2,3,4-tetramethylcyclopenta-1,3-diene
tricarbonyl(η5-tetramethylcyclopentadienyl)rhenium
Conditions | Yield |
---|---|
at 150 - 210℃; for 5.66667h; Inert atmosphere; Schlenk technique; | 98% |
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
In acetonitrile at 20℃; for 0.0833333h; | 97% |
Conditions | Yield |
---|---|
With potassium hydride for 24h; Reflux; | 96.5% |
1,2,3,4-tetramethylcyclopenta-1,3-diene
ethenetetracarbonitrile
5,5,6,6-tetracyano-1,2,3,4-tetramethylbicyclo<2.2.1>hept-2-ene
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; |
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% |
Conditions | Yield |
---|---|
at 100℃; for 6h; Diels-Alder reaction; neat (no solvent); stereoselective reaction; | 95% |
di-μ-acetato-bis(η4-1,5-cyclooctadiene)dirhodium(I)
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
In methanol; toluene at 23℃; | 95% |
Conditions | Yield |
---|---|
at 20℃; under 15201 Torr; for 12h; Inert atmosphere; Schlenk technique; | 93% |
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
In acetonitrile at 20℃; for 0.0833333h; Kinetics; Solvent; | 93% |
1,2,3,4-tetramethylcyclopenta-1,3-diene
Conditions | Yield |
---|---|
In acetonitrile at 20℃; for 0.0833333h; | 91% |
triisopropoxytitanium(IV) chloride
1,2,3,4-tetramethylcyclopenta-1,3-diene
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% |
n-butyllithium
isopropyldimethylsilyl chloride
1,2,3,4-tetramethylcyclopenta-1,3-diene
5-(isopropyldimethylsilyl)-1,2,3,4-tetramethylcyclopenta-1,3-diene
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% |
Conditions | Yield |
---|---|
at 130℃; Inert atmosphere; neat (no solvent); | 89% |
1,2,3,4-tetramethylcyclopenta-1,3-diene
Chlorodimethyl-(2,4,6-trimethylphenyl)silane
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% |
1,2,3,4-tetramethylcyclopenta-1,3-diene
N-(4-bromophenyl)maleimide
1,2,3,4-tetramethylbicyclo<2.2.1>hept-2-ene-5,6-dicarboxylic acid p-bromophenylimide
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; |
1,2,3,4-tetramethylcyclopenta-1,3-diene
dimethyl(2-phenylethyl)chlorosilane
1,2,3,4-tetramethyl-5-(dimethylphenethylsilyl)cyclopenta-1,3-diene
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% |
1,2,3,4-tetramethylcyclopenta-1,3-diene
chlorodimethyl(3,5-dimethylphenyl)silane
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% |
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% |
[2-(allyloxy)-3-tert-butyl-5-methylphenyl](chloro)dimethylsilane
1,2,3,4-tetramethylcyclopenta-1,3-diene
[2-(allyloxy)-3-tert-butyl-5-methylphenyl](dimethyl)(2,3,4,5-tetramethylcyclopenta-2,4-dien-1-yl)silane
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% |
1,2-bis-(chlorodimethylsilyl)ethane
1,2,3,4-tetramethylcyclopenta-1,3-diene
1,1'-<1,2-Ethandiylbis(dimethylsilyl)>bis(2,3,4,5-tetramethyl-2,4-cyclopentadien)
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% |
1,2,3,4-tetramethylcyclopenta-1,3-diene
[(η5-teramethylcyclopentadienyl)Sc(III)(o-dimethylaminobenzyl)2]
Conditions | Yield |
---|---|
In tetrahydrofuran byproducts: CH3C6H4NMe2; 1 equiv. of H2C5Me4 at 70°C; | 85% |
Os(hydride)6(triisopropylphosphine)2
1,2,3,4-tetramethylcyclopenta-1,3-diene
[OsH3(η5-tetramethylcyclopentadienyl)(P(i-Pr)3)]
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% |
OsH3Cl(PPh3)3
1,2,3,4-tetramethylcyclopenta-1,3-diene
[(η5-C5Me4H)OsCl(PPh3)2]
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% |
1,2,3,4-tetramethylcyclopenta-1,3-diene
phenyldimethylsilyl chloride
1,2,3,4-tetramethyl-5-(dimethylphenylsilyl)cyclopenta-1,3-diene
Conditions | Yield |
---|---|
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In hexane Stage #2: phenyldimethylsilyl chloride In tetrahydrofuran | 84% |
maleiimide
1,2,3,4-tetramethylcyclopenta-1,3-diene
1,7,8,9-tetramethyl-4-aza-tricyclo[5.2.1.0(2,6)]dec-8-ene-3,5-dione
Conditions | Yield |
---|---|
In benzene for 6h; Diels-Alder reaction; Heating; | 84% |
In methanol at 22℃; under 760.051 Torr; Kinetics; |
1,2,3,4-tetramethylcyclopenta-1,3-diene
dimethylsilicon dichloride
1-(chlorodimethylsilyl)-2,3,4,5-tetramethylcyclopenta-2,4-diene
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% |
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