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Dayang Chem (Hangzhou) Co.,Ltd.

As a leading manufacturer and supplier of chemicals in China, DayangChem not only supply popular chemicals, but also DayangChem's R&D center offer custom synthesis services. DayangChem can provide different quantities of custom synthesis ch

1,2,3,4-TETRAMETHYLCYCLOPENTA-1,3-DIENE

Cas:4249-10-9

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Top Purity CAS 4249-10-9 with fast shipping

Cas:4249-10-9

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

Type:Trading Company

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Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W

1,2,3,4-Tetramethyl-1,3-cyclopentadiene CAS4249-10-9

Cas:4249-10-9

Min.Order:1 Kilogram

FOB Price: $289.0 / 499.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

1,2,3,4-Tetramethyl-1,3-cyclopentadiene 4249-10-9

Cas:4249-10-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Qingdao Beluga Import and Export Co., LTD

1,2,3,4-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

1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE CAS:4249-10-9

Cas:4249-10-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Shandong Hanjiang Chemical Co., Ltd.

Hello, 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

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

Cas:4249-10-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Henan Wentao Chemical Product Co., Ltd.

Henan 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

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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HANGZHOU YUNUO CHEMICAL CO.,LTD

superior 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

1,3-Cyclopentadiene,1,2,3,4-tetramethyl-

Cas:4249-10-9

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

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SHANGHAI T&W PHARMACEUTICAL CO., LTD.

A 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

1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE

Cas:4249-10-9

Min.Order:4 Kilogram

Negotiable

Type:Lab/Research institutions

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Hangzhou J&H Chemical Co., Ltd.

J&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

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Zibo Hangyu Biotechnology Development Co., Ltd

Zibo 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

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

Cas:4249-10-9

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providing h

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Other

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Shanghai Minstar Chemical Co., Ltd

1,2,3,4-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

1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE

Cas:4249-10-9

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

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EAST CHEMSOURCES LIMITED

factory?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

(CAS No.:4249-10-9)1,2,3,4-tetramethyl-1,3-cyclopentadiene

Cas:4249-10-9

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

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TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

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

Cas:4249-10-9

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

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Shandong Mopai Biotechnology Co., LTD

Shandong 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

(CAS No.:4249-10-9)1,2,3,4-tetramethyl-1,3-cyclopentadiene

Cas:4249-10-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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KAISA GROUP INC

1.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

(CAS No.:4249-10-9)1,2,3,4-tetramethyl-1,3-cyclopentadiene

Cas:4249-10-9

Min.Order:1 Metric Ton

FOB Price: $1.5

Type:Trading Company

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Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

(CAS No.:4249-10-9)1,2,3,4-tetramethyl-1,3-cyclopentadiene

Cas:4249-10-9

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

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Win-Win chemical Co.Ltd

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

Tetramethylcyclopentadiene; mixed isomers cas no. 4249-10-9 97%

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Kono Chem Co.,Ltd

high 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

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Other

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Henan Tianfu Chemical Co., Ltd.

1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Manufacturers

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Chemsigma International Co.,Ltd.

bulk 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

1,2,3,4-TETRAMETHYL-1,3-CYCLOPENTADIENE

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hunan chemfish Pharmaceutical co.,Ltd

Hunan 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

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

Cas:4249-10-9

Min.Order:0 Metric Ton

Negotiable

Type:Trading Company

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Antimex Chemical Limied

Ansciep 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

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hubei Langyou International Trading Co., Ltd

(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

(CAS No.:4249-10-9)1,2,3,4-tetramethyl-1,3-cyclopentadiene

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Other

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DB BIOTECH CO., LTD

best seller Application:API

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Trading Company

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BOC Sciences

We 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

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Trading Company

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Hangzhou Fandachem Co.,Ltd

1,3-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

1,3-Cyclopentadiene,1,2,3,4-tetramethyl-

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Other

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Henan Kanbei Chemical Co.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

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

Cas:4249-10-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Synthetic route

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

2,3,4,5-tetramethylcyclopent-2-en-1-ol

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
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
164528-21-6

(C5Me4H)2Yb(THF)2

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

N1,N2-bis(2,6-dimethylphenyl)ethane-1,2-diimine

A

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

B

C31H41N2OYb

C31H41N2OYb

Conditions
ConditionsYield
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
54458-61-6

2,3,4,5-tetramethyl-2-cyclopenten-1-one

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
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
49587-60-2

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

A

chlorotetramethylcyclopentene

chlorotetramethylcyclopentene

B

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
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

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

A

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

B

C9H12S

C9H12S

C

nitrogen
7727-37-9

nitrogen

Conditions
ConditionsYield
With methyllithium In diethyl ether Schlenk technique;A 68%
B n/a
C n/a
(C5Me4H)2Yb(THF)2
164528-21-6

(C5Me4H)2Yb(THF)2

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

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

A

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

B

C41H61N2OYb

C41H61N2OYb

C

C27H39Yb

C27H39Yb

Conditions
ConditionsYield
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)
90644-55-6

1,1,2,3-Tetramethyl-4-methylen-cyclobuten-(2)

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
With sulfuric acid In tetrachloromethane
dimethyl sulfate
77-78-1

dimethyl sulfate

sodium cyclopentadienylide
4984-82-1

sodium cyclopentadienylide

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
With sodium amide In ammonia
1,2,3,4-Tetramethyl-cyclopent-3-enol
73659-32-2

1,2,3,4-Tetramethyl-cyclopent-3-enol

A

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

B

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

1,2,3,5-tetramethylcyclopenta-1,3-diene

C

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

1,3,4,5-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
Heating; Title compound not separated from byproducts;
1-chloro-1,3,4-trimethyl-2-methylene-3-cyclobutene
90002-77-0

1-chloro-1,3,4-trimethyl-2-methylene-3-cyclobutene

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
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
54458-60-5

2,3,5,6-tetrahydro-2,3,5,6-tetramethyl-γ-pyrone

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
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
52883-78-0

(E)-4-methylhex-4-en-3-one

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
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
pentan-3-one
96-22-0

pentan-3-one

halobenzene

halobenzene

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
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
83321-16-8

2,3,4-trimethylcyclopent-2-enone

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
Multi-step reaction with 2 steps
2: Heating
View Scheme
monoaluminum phosphate

monoaluminum phosphate

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

2,3,4,5-tetramethylcyclopent-2-en-1-ol

1,2,3,4-tetramethylcyclopenta-1,3-diene
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

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

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
In pentane
methylene chloride
74-87-3

methylene chloride

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

1,2,3-trimethylcyclopentadiene

methyl tributylammonium chloride

methyl tributylammonium chloride

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
With sodium hydroxide
bromomethyldimethylsilyl chloride
16532-02-8

bromomethyldimethylsilyl chloride

potassium 2,3,4,5-tetramethyl cyclopentadienyl

potassium 2,3,4,5-tetramethyl cyclopentadienyl

A

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

B

C21H34Si

C21H34Si

Conditions
ConditionsYield
In tetrahydrofuran at -78℃; Inert atmosphere; Schlenk technique; Reflux;
1,2,3,4-tetramethylcyclopenta-1,3-diene
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

p-benzoquinone
106-51-4

p-benzoquinone

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

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

Conditions
ConditionsYield
In benzene at 30℃; for 4h;99%
tetrahydrofuran
109-99-9

tetrahydrofuran

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

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

Conditions
ConditionsYield
With sodium hydride for 24h; Reflux;98.1%
1,2,3,4-tetramethylcyclopenta-1,3-diene
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

ethynyl p-tolyl sulfone
13894-21-8

ethynyl p-tolyl sulfone

C18H22O2S

C18H22O2S

Conditions
ConditionsYield
at 80℃; Inert atmosphere; neat (no solvent);98%
decacarbonyldirhenium(0)
14285-68-8

decacarbonyldirhenium(0)

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

tricarbonyl(η5-tetramethylcyclopentadienyl)rhenium

Conditions
ConditionsYield
at 150 - 210℃; for 5.66667h; Inert atmosphere; Schlenk technique;98%
1,2,3,4-tetramethylcyclopenta-1,3-diene
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-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

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
ConditionsYield
In acetonitrile at 20℃; for 0.0833333h;97%
tetrahydrofuran
109-99-9

tetrahydrofuran

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

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

Conditions
ConditionsYield
With potassium hydride for 24h; Reflux;96.5%
1,2,3,4-tetramethylcyclopenta-1,3-diene
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

ethenetetracarbonitrile
670-54-2

ethenetetracarbonitrile

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

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

Conditions
ConditionsYield
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;
1,2,3,4-tetramethylcyclopenta-1,3-diene
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

chlorodimethyl(4-methoxyphenyl)silane

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

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

Conditions
ConditionsYield
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%
benzothiophene-1,1-dioxide
825-44-5

benzothiophene-1,1-dioxide

1,2,3,4-tetramethylcyclopenta-1,3-diene
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

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
ConditionsYield
at 100℃; for 6h; Diels-Alder reaction; neat (no solvent); stereoselective reaction;95%
di-μ-acetato-bis(η4-1,5-cyclooctadiene)dirhodium(I)
12097-36-8

di-μ-acetato-bis(η4-1,5-cyclooctadiene)dirhodium(I)

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

(Me4Cp)Rh(cod)

(Me4Cp)Rh(cod)

Conditions
ConditionsYield
In methanol; toluene at 23℃;95%
1,2,3,4-tetramethylcyclopenta-1,3-diene
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

C99H132Th

C99H132Th

hydrogen
1333-74-0

hydrogen

C88H128OTh

C88H128OTh

Conditions
ConditionsYield
at 20℃; under 15201 Torr; for 12h; Inert atmosphere; Schlenk technique;93%
1,2,3,4-tetramethylcyclopenta-1,3-diene
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-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

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

Conditions
ConditionsYield
In acetonitrile at 20℃; for 0.0833333h; Kinetics; Solvent;93%
1,2,3,4-tetramethylcyclopenta-1,3-diene
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

N-butyl-5-nitrosonaphthalene-1-sulfonamide

N-butyl-5-nitrosonaphthalene-1-sulfonamide

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

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

Conditions
ConditionsYield
In acetonitrile at 20℃; for 0.0833333h;91%
triisopropoxytitanium(IV) chloride
20717-86-6

triisopropoxytitanium(IV) chloride

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

(η5-tetramethylcyclopentadienyl)triisopropoxytitanium

(η5-tetramethylcyclopentadienyl)triisopropoxytitanium

Conditions
ConditionsYield
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
109-72-8, 29786-93-4

n-butyllithium

isopropyldimethylsilyl chloride
3634-56-8

isopropyldimethylsilyl chloride

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

5-(isopropyldimethylsilyl)-1,2,3,4-tetramethylcyclopenta-1,3-diene

Conditions
ConditionsYield
Stage #1: n-butyllithium; 1,2,3,4-tetramethylcyclopenta-1,3-diene In tetrahydrofuran; hexane
Stage #2: isopropyldimethylsilyl chloride In tetrahydrofuran; hexane
89%
maleic anhydride
108-31-6

maleic anhydride

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

C12H16O3

C12H16O3

Conditions
ConditionsYield
at 130℃; Inert atmosphere; neat (no solvent);89%
1,2,3,4-tetramethylcyclopenta-1,3-diene
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

Chlorodimethyl-(2,4,6-trimethylphenyl)silane

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

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

Conditions
ConditionsYield
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
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

N-(4-bromophenyl)maleimide

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

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

Conditions
ConditionsYield
In 1,4-dioxane at 25℃; Rate constant; Thermodynamic data; activation enthalpy ΔH(excit.) and entropy ΔS(excit.);87%
In 1,4-dioxane87%
at 25℃; Rate constant;
1,2,3,4-tetramethylcyclopenta-1,3-diene
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

dimethyl(2-phenylethyl)chlorosilane

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

1,2,3,4-tetramethyl-5-(dimethylphenethylsilyl)cyclopenta-1,3-diene

Conditions
ConditionsYield
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
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

chlorodimethyl(3,5-dimethylphenyl)silane

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

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

Conditions
ConditionsYield
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%
1,2,3,4-tetramethylcyclopenta-1,3-diene
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

chloromethyldiphenylsilane
144-79-6

chloromethyldiphenylsilane

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

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

Conditions
ConditionsYield
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
188021-37-6

[2-(allyloxy)-3-tert-butyl-5-methylphenyl](chloro)dimethylsilane

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

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
188021-39-8

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

Conditions
ConditionsYield
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
13528-93-3

1,2-bis-(chlorodimethylsilyl)ethane

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

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

Conditions
ConditionsYield
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)

scandium tris(ortho-N,N-dimethylaminobenzyl)

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

[(η5-teramethylcyclopentadienyl)Sc(III)(o-dimethylaminobenzyl)2]

Conditions
ConditionsYield
In tetrahydrofuran byproducts: CH3C6H4NMe2; 1 equiv. of H2C5Me4 at 70°C;85%
Os(hydride)6(triisopropylphosphine)2
131296-74-7

Os(hydride)6(triisopropylphosphine)2

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

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

[OsH3(η5-tetramethylcyclopentadienyl)(P(i-Pr)3)]

Conditions
ConditionsYield
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
244011-92-5

OsH3Cl(PPh3)3

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

1,2,3,4-tetramethylcyclopenta-1,3-diene

[(η5-C5Me4H)OsCl(PPh3)2]
1239498-09-9

[(η5-C5Me4H)OsCl(PPh3)2]

Conditions
ConditionsYield
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
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

phenyldimethylsilyl chloride
768-33-2

phenyldimethylsilyl chloride

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

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

Conditions
ConditionsYield
Stage #1: 1,2,3,4-tetramethylcyclopenta-1,3-diene With n-butyllithium In hexane
Stage #2: phenyldimethylsilyl chloride In tetrahydrofuran
84%
maleiimide
541-59-3

maleiimide

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

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
1185256-09-0

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

Conditions
ConditionsYield
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
4249-10-9

1,2,3,4-tetramethylcyclopenta-1,3-diene

dimethylsilicon dichloride
75-78-5

dimethylsilicon dichloride

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

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

Conditions
ConditionsYield
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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