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Changchun Artel lmport and Export trade company

minimum order qty. 10 gram

High quality 1,2,3,4-Tetramethyl-Benze supplier in China CAS NO.488-23-3

Cas:488-23-3

Min.Order:10 Gram

Negotiable

Type:Trading Company

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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-Tetramethylbenzene Manufacturer/High quality/Best price/In stock

Cas:488-23-3

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality 1,2,3,4-Tetramethyl-Benze supplier in China

Cas:488-23-3

Min.Order:0 Metric Ton

Negotiable

Type:Manufacturers

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Xi'an Xszo Chem Co., Ltd.

1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s

High Quality Oled CAS 488-23-3 1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:1 Gram

FOB Price: $0.1

Type:Manufacturers

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Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

Prehnitene

Cas:488-23-3

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Henan Tianfu Chemical Co., Ltd.

High purity CAS 488-23-3 1,2,3,4-Tetramethylbenzene in stock Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...) 2.Organic Phosphine Ligands (Tert-butyl-phosphine.Cyclohexyl-phosphine...) 3.OLED intermediat

High purity CAS 488-23-3 1,2,3,4-Tetramethylbenzene in stock

Cas:488-23-3

Min.Order:1 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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Hebei Nengqian Chemical Import and Export Co., LTD

With our good experience, we offer detailed technical support and advice to assist customers. We communicate closely with customers to establish their quality requirements. Consistent Quality Our plant has strict quality control in each manufacturin

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:1 Kilogram

FOB Price: $100.0 / 150.0

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 the dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available &diam

1,2,3,4-Tetramethylbenzene CAS488-23-3

Cas:488-23-3

Min.Order:1 Kilogram

FOB Price: $7.0 / 11.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.In No Less 10 years exporting experience. you 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 Specializ

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Qingdao Beluga Import and Export Co., LTD

1,2,3,4-Tetramethylbenzene CAS:488-23-3 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 quality organic

1,2,3,4-Tetramethylbenzene CAS:488-23-3

Cas:488-23-3

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-Tetramethylbenzene

Cas:488-23-3

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

CAS NO.:488-23-3

Cas:488-23-3

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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

Benzene,1,2,3,4-tetramethyl-

Cas:488-23-3

Min.Order:4 Kilogram

Negotiable

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 providi

Factory Supply 1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:0 Metric Ton

Negotiable

Type:Other

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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-Tetramethylbenzene

Cas:488-23-3

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

High quality 1,2,3,4-Tetramethyl-Benze

Cas:488-23-3

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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HANGZHOU YUNUO CHEMICAL CO.,LTD

Superior quality, moderate price & quick delivery. Appearance:Colorless 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 in organic

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:100 Gram

Negotiable

Type:Trading Company

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Jiangsu Qianyu Molecular Technology Co., LTD.

Our Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an

Best Offer1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:0

Negotiable

Type:Trading Company

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Xiamen Jenny Chemical Technology Co., Ltd.

GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:1 Milligram

Negotiable

Type:Trading Company

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Shanghai Minstar Chemical Co., Ltd

1,2,3,4-Tetramethylbenzene Basic information Product Name: 1,2,3,4-Tetramethylbenzene Synonyms: 1,2,3,4-tetramethyl-benzen;LABOTEST-BB LT00852111;DUROL;1,2,3,4-TETRAMETHYLBENZENE;Prehenitene;1,2,3,4-Tetramethylbenzene,tech.90%;Benzene, 1,2,3,4

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Hangzhou Huarong Pharm Co., Ltd.

Hangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:0

Negotiable

Type:Trading Company

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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

High quality 1,2,3,4-Tetramethyl-Benze supplier in China CAS NO.488-23-3 CAS NO.488-23-3

Cas:488-23-3

Min.Order:1 Metric Ton

FOB Price: $7.0 / 8.0

Type:Trading Company

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Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:0

Negotiable

Type:Manufacturers

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Golden Pharma Co., Limited

GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:1 Kilogram

Negotiable

Type:Other

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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

1,2,3,4-Tetramethylbenzene cas no. 488-23-3 98%

Cas:488-23-3

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-Tetramethylbenzene

Cas:488-23-3

Min.Order:0

Negotiable

Type:Other

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Lonwin Chemical Group Limited

Shanghai Lonwin Chemical company is a subsidiary of Lonwin Industry Group Limited, was established in 2011 and is headquartered in Shanghai, adjacent to China National Convention and Exhibition Center and Hongqiao transportation hub.Lonwinchem is

High Purity 1,2,3,4-Tetramethyl-Benze 488-23-3

Cas:488-23-3

Min.Order:100 Kilogram

FOB Price: $100.0 / 150.0

Type:Other

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Aecochem Corp.

Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:0

Negotiable

Type:Manufacturers

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Hubei Taiho Chemical Co.,LTD

TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:0

Negotiable

Type:Manufacturers

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Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

1,2,3,4-Tetramethylbenzene

Cas:488-23-3

Min.Order:0

Negotiable

Type:Manufacturers

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Synthetic route

1,2-bis(bromomethyl)-3,6-dimethylbenzene
38108-82-6

1,2-bis(bromomethyl)-3,6-dimethylbenzene

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

Conditions
ConditionsYield
With lithium aluminium tetrahydride In tetrahydrofuran at 0 - 5℃; Temperature; Reagent/catalyst; Inert atmosphere; Reflux;97.3%
With tetrahydrofuran; lithium aluminium tetrahydride
1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

acetyl chloride
75-36-5

acetyl chloride

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

1,2,3,5-Tetramethylbenzene
527-53-7

1,2,3,5-Tetramethylbenzene

C

2,3,5,6-tetramethylacetophenone
2142-79-2

2,3,5,6-tetramethylacetophenone

Conditions
ConditionsYield
With aluminium trichloride In tetrachloromethane 1.) 5 deg C, 1 h; 2.) 25 deg C, 1 h;A 2.3%
B 0.1%
C 94.6%
1,2,3,5-Tetramethylbenzene
527-53-7

1,2,3,5-Tetramethylbenzene

acetic anhydride
108-24-7

acetic anhydride

A

1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

B

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

C

1-(2,3,4,6-tetramethyl-phenyl)-ethanone
2142-78-1

1-(2,3,4,6-tetramethyl-phenyl)-ethanone

D

2,3,5,6-tetramethylacetophenone
2142-79-2

2,3,5,6-tetramethylacetophenone

Conditions
ConditionsYield
With aluminium trichloride In carbon disulfide at 50℃; for 0.5h; Further byproducts given;A 1.8%
B 1.9%
C 92.8%
D 2.2%
1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

acetic anhydride
108-24-7

acetic anhydride

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

2,3,5,6-tetramethylacetophenone
2142-79-2

2,3,5,6-tetramethylacetophenone

C

1,1′-(2,3,5,6-tetramethyl-1,4-phenylene)bis(ethan-1-one)
15517-58-5

1,1′-(2,3,5,6-tetramethyl-1,4-phenylene)bis(ethan-1-one)

Conditions
ConditionsYield
aluminium trichloride In carbon disulfide 1.) 25 deg C, 1 h; 2.) 50 deg C, 3 h;A 2.9%
B 69.6%
C 27.5%
dimethylacetylene
503-17-3

dimethylacetylene

Cp2TiCl2

Cp2TiCl2

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

Conditions
ConditionsYield
Stage #1: Cp2TiCl2 With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h;
Stage #2: dimethylacetylene In tetrahydrofuran; hexane at -10℃; for 3h;
Stage #3: With propyl cyanide In tetrahydrofuran; hexane at 50℃; for 1h;
53%
1,2-Diisopropyliden-3,4-dichlor-cyclobutan
18611-39-7

1,2-Diisopropyliden-3,4-dichlor-cyclobutan

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

2-(3-methylphenyl)propene
1124-20-5

2-(3-methylphenyl)propene

C

1-chloro-2-isopropyl-6-methylbenzene
76886-19-6

1-chloro-2-isopropyl-6-methylbenzene

Conditions
ConditionsYield
at 250℃; for 2.5h;A 51%
B 11%
C 30%
4-Chlor-2-chlormethylen-3-isopropyliden-1,1-dimethyl-cyclobutan
18611-37-5

4-Chlor-2-chlormethylen-3-isopropyliden-1,1-dimethyl-cyclobutan

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

1,2-Diisopropyliden-3,4-dichlor-cyclobutan
18611-39-7

1,2-Diisopropyliden-3,4-dichlor-cyclobutan

C

1-chloro-2-isopropyl-6-methylbenzene
76886-19-6

1-chloro-2-isopropyl-6-methylbenzene

Conditions
ConditionsYield
at 300℃; for 2.5h; Mechanism; pyrolysis of halogen derivatives of dimethylenecyclobutane and methylenecyclobutene investigated;A 48%
B n/a
C 2%
4-Chlor-2-chlormethylen-3-isopropyliden-1,1-dimethyl-cyclobutan
18611-37-5

4-Chlor-2-chlormethylen-3-isopropyliden-1,1-dimethyl-cyclobutan

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

2-(3-methylphenyl)propene
1124-20-5

2-(3-methylphenyl)propene

C

1-chloro-2-isopropyl-6-methylbenzene
76886-19-6

1-chloro-2-isopropyl-6-methylbenzene

Conditions
ConditionsYield
at 300℃; for 2.5h;A 48%
B 28%
C 2%
Dimethyl ether
115-10-6

Dimethyl ether

para-xylene
106-42-3

para-xylene

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

pentamethylbenzene,
700-12-9

pentamethylbenzene,

C

Hexamethylbenzene
87-85-4

Hexamethylbenzene

Conditions
ConditionsYield
at 450℃; Leiten ueber Aluminiumoxyd-Siliciumdioxyd-Kontakte;
1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

1,2,3,5-Tetramethylbenzene
527-53-7

1,2,3,5-Tetramethylbenzene

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

Conditions
ConditionsYield
With sulfuric acid at 85℃; Erhitzen der gebildeten 1.2.3.4-Tetramethyl-benzol-sulfonsaeure-(5) mit wss. H2SO4 auf 145grad;
pentamethylbenzene,
700-12-9

pentamethylbenzene,

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

Hexamethylbenzene
87-85-4

Hexamethylbenzene

Conditions
ConditionsYield
With sulfuric acid Darstellung der Sulfonsaeure;
ethylmesitylene
3982-67-0

ethylmesitylene

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

1-ethyl-2,4,5-trimethylbenzene
17851-27-3

1-ethyl-2,4,5-trimethylbenzene

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

sumaresinolic acid
559-64-8

sumaresinolic acid

A

2,7-dimethylnaphthalene
582-16-1

2,7-dimethylnaphthalene

B

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

C

1,2,5,6-tetramethylnaphthalene
2131-43-3

1,2,5,6-tetramethylnaphthalene

D

1,2,7-trimethylnaphthalene
486-34-0

1,2,7-trimethylnaphthalene

Conditions
ConditionsYield
at 310℃; under 12 Torr; anschliessendes Erhitzen mit Selen auf 340-350grad;
dibromo-m-xylene
90434-19-8

dibromo-m-xylene

methyl iodide
74-88-4

methyl iodide

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

Conditions
ConditionsYield
With diethyl ether; sodium
2-bromo-1,3,4-trimethyl-benzene
41381-36-6

2-bromo-1,3,4-trimethyl-benzene

methyl iodide
74-88-4

methyl iodide

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

Conditions
ConditionsYield
With sodium; benzene at 150℃; im Einschlussrohr;
1,2,4-Trimethylbenzene
95-63-6

1,2,4-Trimethylbenzene

A

o-xylene
95-47-6

o-xylene

B

para-xylene
106-42-3

para-xylene

C

1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

D

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

E

1,2,3,5-Tetramethylbenzene
527-53-7

1,2,3,5-Tetramethylbenzene

F

m-xylene
108-38-3

m-xylene

Conditions
ConditionsYield
With hydrogen; H Mordenite at 350℃; under 760 Torr; for 7h; Product distribution; variation of the catalyst;
With USY zeolite (spiltover hydrogen); hydrogen In gas at 200℃; for 0.333333h; Product distribution; effect of spiltover hydrogen on the stabilization of catalytic activity; also on illared montmorillonite;
1,2,4-Trimethylbenzene
95-63-6

1,2,4-Trimethylbenzene

A

o-xylene
95-47-6

o-xylene

B

para-xylene
106-42-3

para-xylene

C

1,2,3-trimethylbenzene
526-73-8

1,2,3-trimethylbenzene

D

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

E

m-xylene
108-38-3

m-xylene

F

1,3,5-trimethyl-benzene
108-67-8

1,3,5-trimethyl-benzene

Conditions
ConditionsYield
With HY zeolite at 200℃; under 12.8 Torr; Product distribution; Rate constant; Equilibrium constant; kinetics, Ea, mechanism; var. temp.;
2',3',4',5'-tetramethylacetophenone
34764-71-1

2',3',4',5'-tetramethylacetophenone

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

Conditions
ConditionsYield
With methoxybenzene; trifluoroacetic acid at 110℃; Rate constant;
1,2,3,4-tetramethyl-[5-3H]benzene
74692-88-9

1,2,3,4-tetramethyl-[5-3H]benzene

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

Conditions
ConditionsYield
With acetic acid; trifluoroacetic acid Rate constant; changes in Vol percent TFA in HOAc;
Anthracene-9,10-dicarbonitrile; compound with 1,2,3,4-tetramethyl-benzene

Anthracene-9,10-dicarbonitrile; compound with 1,2,3,4-tetramethyl-benzene

A

9,10-Dicyanoanthracene
1217-45-4

9,10-Dicyanoanthracene

B

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

Conditions
ConditionsYield
In acetonitrile Thermodynamic data; Rate constant; ΔG;
Anthracene-2,6,9,10-tetracarbonitrile; compound with 1,2,3,4-tetramethyl-benzene
130563-79-0

Anthracene-2,6,9,10-tetracarbonitrile; compound with 1,2,3,4-tetramethyl-benzene

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

2,6,9,10-tetracyanoanthracene
80721-78-4

2,6,9,10-tetracyanoanthracene

Conditions
ConditionsYield
In acetonitrile Thermodynamic data; Rate constant; ΔG;
2,3,4,5-Tetramethyltetracyclo<4.4.0.02,4.03,5>deca-7,9-dien-1,6-dicarbonsaeureanhydrid
66312-03-6

2,3,4,5-Tetramethyltetracyclo<4.4.0.02,4.03,5>deca-7,9-dien-1,6-dicarbonsaeureanhydrid

A

phthalic anhydride
85-44-9

phthalic anhydride

B

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

C

1,2,3,4-tetramethylnaphthalene
3031-15-0

1,2,3,4-tetramethylnaphthalene

D

3,9b-Dihydro-9b-hydroxy-1,2,3a-trimethyl-3-methylencyclopenta<2>benzopyran-5(3aH)-on
80673-73-0

3,9b-Dihydro-9b-hydroxy-1,2,3a-trimethyl-3-methylencyclopenta<2>benzopyran-5(3aH)-on

E

3,4,5,6,9,10,11,12-Octamethylpentacyclo<6.4.2.02,7.03,6.09,12>tetradeca-4,10,13-trien-2,7-dicarbonsaeureanhydrid
80684-79-3

3,4,5,6,9,10,11,12-Octamethylpentacyclo<6.4.2.02,7.03,6.09,12>tetradeca-4,10,13-trien-2,7-dicarbonsaeureanhydrid

Conditions
ConditionsYield
at 145℃; for 0.833333h; Product distribution;
1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

acetyl chloride
75-36-5

acetyl chloride

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

2,3,5,6-tetramethylacetophenone
2142-79-2

2,3,5,6-tetramethylacetophenone

Conditions
ConditionsYield
aluminium trichloride In carbon disulfide at 25℃; for 1h; Product distribution; other acetylation agent, other solvents, other conditions, further tetramethylbenzenes;
1,2,3,5-Tetramethylbenzene
527-53-7

1,2,3,5-Tetramethylbenzene

2',3',4',5'-tetramethylacetophenone
34764-71-1

2',3',4',5'-tetramethylacetophenone

A

1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

B

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

C

1-(2,3,4,6-tetramethyl-phenyl)-ethanone
2142-78-1

1-(2,3,4,6-tetramethyl-phenyl)-ethanone

D

2,3,5,6-tetramethylacetophenone
2142-79-2

2,3,5,6-tetramethylacetophenone

Conditions
ConditionsYield
With aluminium trichloride In nitromethane at 20℃; for 15h; Product distribution; Mechanism; further solvent, methyl substituted acetophenones, with or without methyl substituted benzenes;A 29.6 % Chromat.
B 4.6 % Chromat.
C 0.9 % Chromat.
D 16.2 % Chromat.
C23H23(1+)

C23H23(1+)

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

9-fluorenyl carbocation
12257-35-1

9-fluorenyl carbocation

Conditions
ConditionsYield
In various solvent(s) at -20℃; Rate constant; Equilibrium constant;
1R,2c,3t,4t-tetramethylcyclohexane
3726-45-2

1R,2c,3t,4t-tetramethylcyclohexane

selenium

selenium

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

Conditions
ConditionsYield
at 400℃;
1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

aluminium halide

aluminium halide

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

1,2,3,5-Tetramethylbenzene
527-53-7

1,2,3,5-Tetramethylbenzene

Conditions
ConditionsYield
at 26.9℃; Zusammensetzung des Gleichgewichtsgemisches;
1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

aluminium oxide silicon dioxide

aluminium oxide silicon dioxide

A

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

B

1,2,3,5-Tetramethylbenzene
527-53-7

1,2,3,5-Tetramethylbenzene

Conditions
ConditionsYield
at 426.9℃; Zusammensetzung des Gleichgewichtsgemisches;
2-methylpent-2-enoic acid
16957-70-3

2-methylpent-2-enoic acid

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

3-ethyl-2,4,5,6,7-pentamethyl-2,3-dihydro-1H-inden-1-one

3-ethyl-2,4,5,6,7-pentamethyl-2,3-dihydro-1H-inden-1-one

Conditions
ConditionsYield
Stage #1: 2-methylpent-2-enoic acid With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane at 25℃; for 2h; Inert atmosphere;
Stage #2: With aluminum (III) chloride In dichloromethane at 8℃; Inert atmosphere;
Stage #3: 1,2,3,4-Tetramethylbenzene In dichloromethane at 25℃; for 4h; Inert atmosphere;
100%
1,2,3-trimethoxybenzene
621-23-8

1,2,3-trimethoxybenzene

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

2,4,6-trimethoxy-2',3',4',5'-tetramethyl-1,1'-biphenyl

2,4,6-trimethoxy-2',3',4',5'-tetramethyl-1,1'-biphenyl

Conditions
ConditionsYield
With dipotassium peroxodisulfate; palladium diacetate; trifluoroacetic acid at 50℃; for 18h; Inert atmosphere; Sealed tube;98%
formaldehyd
50-00-0

formaldehyd

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

5,6-bis(bromomethyl)-1,2,3,4-tetramethylbenzene
55743-69-6

5,6-bis(bromomethyl)-1,2,3,4-tetramethylbenzene

Conditions
ConditionsYield
With hydrogen bromide; acetic acid at 100℃; for 8h;97%
With sulfuric acid; acetic acid; sodium bromide for 3h; Heating;6%
With hydrogen bromide; acetic acid
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

1-iodo-2,3,4,5-tetramethylbenzene
54509-71-6

1-iodo-2,3,4,5-tetramethylbenzene

Conditions
ConditionsYield
With sulfuric acid; iodine; nitric acid In acetic acid at 50 - 55℃; for 5h;97%
With iodine; Selectfluor In acetonitrile at 55 - 65℃; for 1h;85%
chloro(1,5-cyclooctadiene)iridium(I) dimer

chloro(1,5-cyclooctadiene)iridium(I) dimer

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

silver(I) 4-methylbenzenesulfonate
16836-95-6

silver(I) 4-methylbenzenesulfonate

[Ir(C6H2(CH3)4)((CHCHC2H4)2)](1+)*OSO2C6H4CH3(1-)=[Ir(C6H2(CH3)4)((CHCHC2H4)2)]OSO2C6H4CH3
75751-43-8

[Ir(C6H2(CH3)4)((CHCHC2H4)2)](1+)*OSO2C6H4CH3(1-)=[Ir(C6H2(CH3)4)((CHCHC2H4)2)]OSO2C6H4CH3

Conditions
ConditionsYield
In ethanol; dichloromethane; acetone (N2); silver tosylate treated with acetone/EtOH/C6H2(CH3)4, treated with Ir complex/CH2Cl2, stirred for 14 h at room temp.; filtered, concd., Et2O added, decanted, dried (vac.), recrystd. from CH2Cl2/Et2O/pentane and CH2Cl2/Et2O; elem. anal.;97%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

acetyl chloride
75-36-5

acetyl chloride

A

1,2,4,5-tetramethylbenzene
95-93-2

1,2,4,5-tetramethylbenzene

B

2',3',4',5'-tetramethylacetophenone
34764-71-1

2',3',4',5'-tetramethylacetophenone

Conditions
ConditionsYield
aluminium trichloride In carbon disulfide at 25℃; for 3h;A 2.9%
B 96.4%
With aluminium trichloride In carbon disulfide at 25℃; for 3h;A 4.2%
B 91.8%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

1,2,3,4-tetramethyl-2,5-dichlorobenzene
19219-82-0

1,2,3,4-tetramethyl-2,5-dichlorobenzene

Conditions
ConditionsYield
With benzyl(trimethyl)ammonium tetrachloroiodate In acetic acid for 20h; Ambient temperature;96%
With 1,3-dichloro-5,5-dimethylhydantoin; acetic acid at 90℃; for 2.5h;33%
With 1,3-dichloro-5,5-dimethylhydantoin In acetic acid at 90℃; for 2.5h;33%
With aluminium trichloride; sulfuryl dichloride
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

A

1-Bromo-2,3,4,5-tetramethylbenzene
40101-36-8

1-Bromo-2,3,4,5-tetramethylbenzene

B

1,2-dibromo-3,4,5,6-tetramethylbenzene
36321-73-0

1,2-dibromo-3,4,5,6-tetramethylbenzene

Conditions
ConditionsYield
With benzyltrimethylazanium tribroman-2-uide; zinc(II) chloride In acetic acid for 2h; Ambient temperature;A 96%
B 85%
Tiglic acid
80-59-1

Tiglic acid

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

2,3,4,5,6,7-tetramethylindane-1-one
163842-93-1

2,3,4,5,6,7-tetramethylindane-1-one

Conditions
ConditionsYield
Stage #1: Tiglic acid With oxalyl dichloride; N,N-dimethyl-formamide In dichloromethane for 12h; Inert atmosphere;
Stage #2: 1,2,3,4-Tetramethylbenzene With aluminum (III) chloride In dichloromethane at 8 - 25℃; for 4h; Inert atmosphere;
96%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

acetyl chloride
75-36-5

acetyl chloride

A

2,3,5,6-tetramethylacetophenone
2142-79-2

2,3,5,6-tetramethylacetophenone

B

2',3',4',5'-tetramethylacetophenone
34764-71-1

2',3',4',5'-tetramethylacetophenone

Conditions
ConditionsYield
With aluminium trichloride In chloroform at 25℃; for 1h;A 4.1%
B 95.3%
formaldehyd
50-00-0

formaldehyd

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

mono(bromomethyl)prehnitene

mono(bromomethyl)prehnitene

Conditions
ConditionsYield
With hydrogen bromide; acetic acid at 80℃; for 3h;95%
trifluoromethyacrylic acid
381-98-6

trifluoromethyacrylic acid

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

2-trifluoromethyl-3-(4',5',6',7'-tetramethylphenyl)-1-indanone
1219921-42-2

2-trifluoromethyl-3-(4',5',6',7'-tetramethylphenyl)-1-indanone

Conditions
ConditionsYield
With trifluorormethanesulfonic acid at 0 - 20℃; Friedel Crafts reaction;95%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

methyl (4,5)-anti-4-(2',3',4',5'-tetramethylphenyl)-5-hydroxy-2(E)-hexenoate

methyl (4,5)-anti-4-(2',3',4',5'-tetramethylphenyl)-5-hydroxy-2(E)-hexenoate

Conditions
ConditionsYield
With boron trifluoride diethyl etherate In dichloromethane at -78 - -20℃; for 2h;94%
[ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2
52462-29-0

[ruthenium(II)(η6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]2

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

bis[dichloro-(η(6)-1,2,3,4-tetramethylbenzene)ruthenium]
88946-78-5

bis[dichloro-(η(6)-1,2,3,4-tetramethylbenzene)ruthenium]

Conditions
ConditionsYield
In neat (no solvent) Ru-complex was stirred in excess refluxing arene under N2 for 24 h; soln. was cooled, ppt. collected, washed with hexane;94%
trifluoromethylsulfonic anhydride
358-23-6

trifluoromethylsulfonic anhydride

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

racemic methyl phenyl sulfoxide
1193-82-4

racemic methyl phenyl sulfoxide

S-methyl-S-phenyl-2,3,4,5-tetramethylphenyl sulfonium triflate
1402011-74-8

S-methyl-S-phenyl-2,3,4,5-tetramethylphenyl sulfonium triflate

Conditions
ConditionsYield
In diethyl ether at 0 - 5℃; Inert atmosphere;93.67%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

racemic methyl phenyl sulfoxide
1193-82-4

racemic methyl phenyl sulfoxide

trifluoromethanesulfonic acid anhydride
1025373-45-8

trifluoromethanesulfonic acid anhydride

S-methyl-S-phenyl-2,3,4,5-tetramethylphenyl sulfonium triflate
1402011-74-8

S-methyl-S-phenyl-2,3,4,5-tetramethylphenyl sulfonium triflate

Conditions
ConditionsYield
In diethyl ether at 0 - 5℃; Inert atmosphere;93.67%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

acetic anhydride
108-24-7

acetic anhydride

A

1,1′-(2,3,5,6-tetramethyl-1,4-phenylene)bis(ethan-1-one)
15517-58-5

1,1′-(2,3,5,6-tetramethyl-1,4-phenylene)bis(ethan-1-one)

B

2',3',4',5'-tetramethylacetophenone
34764-71-1

2',3',4',5'-tetramethylacetophenone

C

1,3-diacetyl-2,4,5,6-tetramethylbenzene
69313-51-5

1,3-diacetyl-2,4,5,6-tetramethylbenzene

Conditions
ConditionsYield
With aluminium trichloride In carbon disulfide at 50℃; for 2h;A 5.4%
B 90.6%
C 2.8%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

2,3-bis(bromomethyl)-1,4-bis(dibromomethyl)benzene
117965-56-7

2,3-bis(bromomethyl)-1,4-bis(dibromomethyl)benzene

Conditions
ConditionsYield
With bromine In tetrachloromethane for 1h; Heating; Irradiation;90%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

acryloyl chloride
814-68-6

acryloyl chloride

4,5,6,7-tetramethyl-1H-indan-1-one
711-43-3

4,5,6,7-tetramethyl-1H-indan-1-one

Conditions
ConditionsYield
With aluminium trichloride Cyclization; acylation; Heating;90%
trifluoromethylsulfonic anhydride
358-23-6

trifluoromethylsulfonic anhydride

chloromethyl p-tolyl sulfoxide
24824-93-9

chloromethyl p-tolyl sulfoxide

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

(chloromethyl)(2,3,4,5-tetramethylphenyl)(p-tolyl)sulfonium triflate
1374153-80-6

(chloromethyl)(2,3,4,5-tetramethylphenyl)(p-tolyl)sulfonium triflate

Conditions
ConditionsYield
In diethyl ether at 0 - 5℃; Inert atmosphere;89.74%
chloromethyl p-tolyl sulfoxide
24824-93-9

chloromethyl p-tolyl sulfoxide

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

(chloromethyl)(2,3,4,5-tetramethylphenyl)(p-tolyl)sulfonium tetrafluoroborate

(chloromethyl)(2,3,4,5-tetramethylphenyl)(p-tolyl)sulfonium tetrafluoroborate

Conditions
ConditionsYield
Stage #1: chloromethyl p-tolyl sulfoxide; 1,2,3,4-Tetramethylbenzene With trifluoromethylsulfonic anhydride In diethyl ether at -60℃; for 4h;
Stage #2: With tetrafluoroboric acid In diethyl ether for 0.5h;
89%
trifluoromethylsulfonic anhydride
358-23-6

trifluoromethylsulfonic anhydride

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

S-phenyl-S-propyl-2,3,4,5-tetramethylphenylsulfonium triflate

S-phenyl-S-propyl-2,3,4,5-tetramethylphenylsulfonium triflate

Conditions
ConditionsYield
In diethyl ether at -78℃; for 2h; Inert atmosphere;89%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

1,2-dibromo-3,4,5,6-tetramethylbenzene
36321-73-0

1,2-dibromo-3,4,5,6-tetramethylbenzene

Conditions
ConditionsYield
With bromine; iodine In dichloromethane for 3h;88%
With bromine; zinc(II) chloride In acetic acid at 20℃; for 14h;85%
With bromine; zinc(II) chloride In acetic acid at 20℃; for 14h;85%
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

1,2-diiodo-3,4,5,6-tetramethylbenzene
5503-82-2

1,2-diiodo-3,4,5,6-tetramethylbenzene

Conditions
ConditionsYield
With N,N,N-trimethylbenzenemethanaminium dichloroiodate; zinc(II) chloride In acetic acid at 70℃; for 24h;88%
With sulfuric acid; iodine; periodic acid In water; acetic acid at 50 - 55℃; Suzuki iodination;83%
With iodine; Selectfluor In acetonitrile at 55 - 65℃; for 2.5h;67%
With sulfuric acid; iodine; periodic acid In acetic acid
With sulfuric acid; iodine; periodic acid In acetic acid
4-butanolide
96-48-0

4-butanolide

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

4-(2,3,4,5-Tetramethylphenyl)buttersaeure
147792-79-8

4-(2,3,4,5-Tetramethylphenyl)buttersaeure

Conditions
ConditionsYield
With aluminium trichloride at 60℃; for 2h;88%
(E)-2-methylbut-2-enoyl chloride
35660-94-7

(E)-2-methylbut-2-enoyl chloride

1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

2,3,4,5,6,7-tetramethylindane-1-one
163842-93-1

2,3,4,5,6,7-tetramethylindane-1-one

Conditions
ConditionsYield
With aluminium trichloride In carbon disulfide Heating;88%
With aluminium trichloride Cyclization; acylation; Heating;87%
Stage #1: (E)-2-methylbut-2-enoyl chloride With aluminum (III) chloride In dichloromethane Inert atmosphere;
Stage #2: 1,2,3,4-Tetramethylbenzene In dichloromethane at 25℃; for 4h; Inert atmosphere;
77.25 g
1,2,3,4-Tetramethylbenzene
488-23-3

1,2,3,4-Tetramethylbenzene

2,3,4,5-tetramethyl-1-nitrobenzene
42887-62-7

2,3,4,5-tetramethyl-1-nitrobenzene

Conditions
ConditionsYield
With silver nitrate; boron trifluoride In acetonitrile at 25℃; for 8h;86%
With silver nitrate; boron trifluoride In acetonitrile at 25℃; for 5h; competitive nitration benzene, relative rate;
With nitric acid
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