Wuhan Kemiworks Chemical Co., Ltd . works on research and development, production and technical services of organic silicone chemicals & Organic fluoro chemicals, we have been specializing in the development and production of silicone &
Cas:2554-06-5
Min.Order:1 Kilogram
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inquiryAs 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
Cas:2554-06-5
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryThe 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
Cas:2554-06-5
Min.Order:1
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Type:Other
inquiryOur 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
Cas:2554-06-5
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiryTIANFUCHEM--2554-06-5--2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane in stock Our company was built in 2009 with an ISO certificate.In the past 10 years, we have grown up as a famous fine chemicals supplier in China And we had e
Cas:2554-06-5
Min.Order:1 Metric Ton
FOB Price: $2000.0
Type:Lab/Research institutions
inquiryOur Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con
Cas:2554-06-5
Min.Order:1 Kilogram
FOB Price: $1.0 / 10.0
Type:Trading Company
inquiryWITH 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
Cas:2554-06-5
Min.Order:10 Gram
FOB Price: $146.0 / 176.0
Type:Trading Company
inquiryOur Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We
Cas:2554-06-5
Min.Order:10 Kilogram
Negotiable
Type:Trading Company
inquiry1. Best quality in your requirement 2. Competitive price in China market 3. mature Technical support 4. Professional logistic support 5 . Full experience of large numbers containers loading in Chinese sea port 6 Fast shipment by reputed shipping
Cas:2554-06-5
Min.Order:1 Kilogram
FOB Price: $17.0 / 18.0
Type:Trading Company
inquiryProduct Name: Tetraethenyltetramethylcycloterasiloxane Synonyms: Cyclotetrasiloxane, tetraethenyltetramethyl-; Methyl vinyl cyclotetrasiloxane; Tetramethyltetravinylcyclotetrasiloxane; 2,2,4,4-tetraethenyl-6,6,8,8
Cas:2554-06-5
Min.Order:1 Kilogram
FOB Price: $1.0
Type:Other
inquiryWe are the manufacturers and suppliers of API in China, and warehouse in Germany and USA of California, which can quickly and safely deliver to your address 1.High quality and competitive price. 2.Free sample for your evaluation. 3.Promptly delivery
Cas:2554-06-5
Min.Order:10 Gram
FOB Price: $0.39
Type:Trading Company
inquiry1.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
Cas:2554-06-5
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiry2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane CAS: 2554-06-5 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, speci
Cas:2554-06-5
Min.Order:1 Gram
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Type:Lab/Research institutions
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
Cas:2554-06-5
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiry1,we produce and sell good chemicals around the world. 2,our success rate is about 95%. this means, if customer order is accepted, the probability that the customer will obtain the ordered substances, is 95%. 3,our staff consists of highly qualifie
Cas:2554-06-5
Min.Order:1 Kilogram
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Type:Lab/Research institutions
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
1. Timely and efficient service to ensure communication with customers 2. Produce products of different specifications and sizes according to your requirements. 3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures s
Cas:2554-06-5
Min.Order:1 Kilogram
FOB Price: $20.0 / 30.0
Type:Lab/Research institutions
inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
Cas:2554-06-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
Cas:2554-06-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
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
Cas:2554-06-5
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquirysuperior quality moderate price& quick delivery Appearance:Colorless transparent 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:Use
Cas:2554-06-5
Min.Order:1 Kilogram
Negotiable
Type:Trading Company
inquiryProduct Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
Cas:2554-06-5
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryOur 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
Cas:2554-06-5
Min.Order:0
Negotiable
Type:Trading Company
inquiryGMP 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,
Cas:2554-06-5
Min.Order:1 Milligram
Negotiable
Type:Trading Company
inquiryProduct Name: 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane MF: C12H24O4Si4 MW: 344.66 EINECS: 219-863-1 Mol File: 2554-06-5.mol 2,4,6,8-Tetravinyl-2,4,6,8-tetramethylcyclotetrasiloxane Structure 2,4,6,8-Tetravinyl-2,4,6,
Cas:2554-06-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
Cas:2554-06-5
Min.Order:1 Kilogram
FOB Price: $18.0 / 20.0
Type:Trading Company
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
Cas:2554-06-5
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
Cas:2554-06-5
Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
Cas:2554-06-5
Min.Order:0
Negotiable
Type:Manufacturers
inquiryHigh quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
Cas:2554-06-5
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquirychloro-trimethyl-silane
Dichloromethylvinylsilane
A
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
B
1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane
C
1,1,1,3,5,7,7,7-octamethyl-3,5-divinyltetrasiloxane
D
1,1,1,3,5,7,9,9,9-nonamethyl-3,5,7-trivinylpentasiloxane
Conditions | Yield |
---|---|
With water In toluene at 20℃; for 27h; Further byproducts given; | A n/a B n/a C 26% D 10 % Chromat. |
With water In toluene at 20℃; for 27h; Further byproducts given; | A n/a B n/a C 26 % Chromat. D 10% |
chloro-trimethyl-silane
Dichloromethylvinylsilane
A
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
B
1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane
C
1,1,1,3,5,7,7,7-octamethyl-3,5-divinyltetrasiloxane
D
C18H42O5Si6
Conditions | Yield |
---|---|
With water In toluene at 20℃; for 27h; Further byproducts given; | A n/a B n/a C 26% D 6 % Chromat. |
Dichloromethylvinylsilane
A
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
B
1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane
Conditions | Yield |
---|---|
With water In toluene at 20℃; for 27h; | A 24% B 19 % Chromat. |
With water In toluene at 20℃; for 27h; | A 26 % Chromat. B 12% |
Dichloromethylvinylsilane
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
Conditions | Yield |
---|---|
With ethanol |
chloro-trimethyl-silane
Dichloromethylvinylsilane
A
methylbis(trimethylsilyloxy)vinylsilane
B
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
C
1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane
D
1,1,1,3,5,7,7,7-octamethyl-3,5-divinyltetrasiloxane
Conditions | Yield |
---|---|
With water In toluene at 20℃; for 27h; Further byproducts given. Yields of byproduct given; | A 31 % Chromat. B n/a C n/a D n/a |
Dichloromethylvinylsilane
A
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
B
2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinylcyclopentasiloxane
C
2,4,6,8,10,12-hexamethyl-2,4,6,8,10,12-hexavinyl-cyclohexasiloxane
D
1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane
Conditions | Yield |
---|---|
With hydrogenchloride In toluene at 20℃; for 4h; Yield given. Further byproducts given. Yields of byproduct given; | |
With hydrogenchloride In toluene at 20℃; for 4h; Yield given. Yields of byproduct given; |
Dichloromethylvinylsilane
A
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
B
2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinylcyclopentasiloxane
C
1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane
Conditions | Yield |
---|---|
With tetrahydrofuran; lithium at 35 - 45℃; Product distribution; Mechanism; | |
With tetrahydrofuran; lithium at 35 - 45℃; Yield given. Yields of byproduct given. Title compound not separated from byproducts; |
Dichloromethylvinylsilane
A
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
B
2,4,6,8,10,12-hexamethyl-2,4,6,8,10,12-hexavinyl-cyclohexasiloxane
C
1,3,5-trimethyl-1,3,5-trivinyl-cyclotrisiloxane
D
2,4,6,8,10,12,14-Heptamethyl-2,4,6,8,10,12,14-heptavinyl-1,3,5,7,9,11,13-heptaoxa-2,4,6,8,10,12,14-heptasila-cyclotetradecane
Conditions | Yield |
---|---|
With hydrogenchloride In toluene at 20℃; for 4h; Yield given. Further byproducts given. Yields of byproduct given; |
methylvinyldiethoxysilane
A
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
Conditions | Yield |
---|---|
With hydrogenchloride |
Dichloromethylvinylsilane
Octamethyltrisiloxane
A
Hexamethyldisiloxane
B
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
C
1,1,1,3,5,7,9,9,9-nonamethyl-3,5,7-trivinylpentasiloxane
Conditions | Yield |
---|---|
With dimethyl sulfoxide Heating; Further byproducts given. Title compound not separated from byproducts; |
Dichloromethylvinylsilane
Octamethyltrisiloxane
A
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
B
2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinylcyclopentasiloxane
C
2,4,6,8,10,12-hexamethyl-2,4,6,8,10,12-hexavinyl-cyclohexasiloxane
Conditions | Yield |
---|---|
With dimethyl sulfoxide at 20℃; Further byproducts given. Title compound not separated from byproducts; |
Dichloromethylvinylsilane
A
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
B
2,4,6,8,10-pentamethyl-2,4,6,8,10-pentavinylcyclopentasiloxane
Conditions | Yield |
---|---|
With 18-crown-6 ether; water at 20℃; for 0.5h; Overall yield = 90.1 %; |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
2,4,6,8-Tetramethyl-2,4,6,8-tetrakis-(2-trichlorosilanyl-ethyl)-[1,3,5,7,2,4,6,8]tetroxatetrasilocane
Conditions | Yield |
---|---|
With trichlorosilane; platinum on activated charcoal In tetrahydrofuran for 48h; | 100% |
With trichlorosilane; platinum on activated charcoal Addition; | |
With H3SiCl3; platinum on activated charcoal In tetrahydrofuran | |
Stage #1: 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane; platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex In diethyl ether; xylene at -78℃; Stage #2: With trichlorosilane In diethyl ether; xylene at -78 - 20℃; for 20h; |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
2-bromobenzoic acid ethyl ester
2-ethenylbenzoic acid ethyl ester
Conditions | Yield |
---|---|
Stage #1: 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane With tetrabutyl ammonium fluoride; palladium(II) bromide; johnphos In tetrahydrofuran for 0.166667h; Hiyama Amino-Acrylate Synthesis; Inert atmosphere; Stage #2: 2-bromobenzoic acid ethyl ester In tetrahydrofuran at 50℃; for 8h; Inert atmosphere; | 99% |
With tetrabutyl ammonium fluoride; palladium(II) bromide; johnphos In tetrahydrofuran at 50℃; for 5h; | 86% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride; bis(dibenzylideneacetone)-palladium(0); johnphos In tetrahydrofuran at 80℃; for 3h; Hiyama Coupling; | 99% |
Dichloromethylsilane
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
2,4,6,8-Tetrakis-[2-(dichloro-methyl-silanyl)-ethyl]-2,4,6,8-tetramethyl-[1,3,5,7,2,4,6,8]tetroxatetrasilocane
Conditions | Yield |
---|---|
platinum on activated charcoal for 12h; Ambient temperature; | 97% |
platinum on activated charcoal at 20℃; for 20h; Addition; | 97% |
10 % platinum-active carbon In tetrahydrofuran for 12h; Ambient temperature; | 93% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
2-bromoanthracene-9,10-dione
2-vinylanthracene-9,10-dione
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride; bis(dibenzylideneacetone)-palladium(0); johnphos In tetrahydrofuran at 80℃; for 8h; Hiyama Coupling; | 96% |
With tetrabutyl ammonium fluoride; bis(dibenzylideneacetone)-palladium(0); johnphos In tetrahydrofuran at 80℃; for 8h; Inert atmosphere; | 96% |
2,2,4,6,8-pentamethylcyclotetrasiloxane
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
1,1-dimethyl-3,3,3-triphenyl-3,3-1-vinyldisiloxane
Conditions | Yield |
---|---|
Stage #1: 2,2,4,6,8-pentamethylcyclotetrasiloxane; 1,1-dimethyl-3,3,3-triphenyl-3,3-1-vinyldisiloxane In toluene at 60℃; for 0.166667h; Stage #2: 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane In toluene at 80℃; for 1h; | 95% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
2-chloronaphthalene
2-Vinylnaphthalene
Conditions | Yield |
---|---|
With XPhos; tetrabutyl ammonium fluoride; palladium diacetate In tetrahydrofuran at 67℃; for 24h; Reagent/catalyst; Hiyama Coupling; Schlenk technique; Inert atmosphere; | 93% |
dimethylmonochlorosilane
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
acetic anhydride
Conditions | Yield |
---|---|
Stage #1: dimethylmonochlorosilane; 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane With dihydrogen hexachloroplatinate In isopropyl alcohol for 0.833333h; Inert atmosphere; Stage #2: acetic anhydride at 100℃; for 12h; Inert atmosphere; | 93% |
3-bromoquinoline
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
3-ethenylquinoline
Conditions | Yield |
---|---|
Stage #1: 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane With tetrabutyl ammonium fluoride; palladium(II) bromide; johnphos In tetrahydrofuran at 20℃; for 0.25h; Inert atmosphere; Stage #2: 3-bromoquinoline In tetrahydrofuran at 50 - 62℃; for 2.83333h; Inert atmosphere; | 91% |
With tetrabutyl ammonium fluoride; palladium(II) bromide; johnphos In tetrahydrofuran at 50℃; for 3h; | 89% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
2-nitrophenyl bromide
2-nitrostyrene
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride; palladium(II) bromide; johnphos In tetrahydrofuran at 50℃; for 2h; | 91% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
para-bromoacetophenone
1-(4-vinylphenyl)ethanone
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride; palladium(II) bromide; johnphos In tetrahydrofuran at 50℃; for 4h; | 91% |
With sodium hydroxide; 4-hydroxyacetophenone oxime-derived palladacycle In water at 120℃; for 0.166667h; microwave irradiation; | 21 % Spectr. |
4-Cyanochlorobenzene
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
2-cyano-6-vinylnaphthalene
Conditions | Yield |
---|---|
With XPhos; tetrabutyl ammonium fluoride; palladium diacetate In tetrahydrofuran at 67℃; for 24h; Inert atmosphere; Schlenk technique; | 91% |
dimethylmonochlorosilane
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
allylmagnesium bromide
Conditions | Yield |
---|---|
Stage #1: dimethylmonochlorosilane; 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane With platinum(0)-1,3-divinyl-1,1,3,3-tetramethyldisiloxane complex In toluene at 60℃; Inert atmosphere; Stage #2: allylmagnesium bromide In tetrahydrofuran at 60℃; for 1.16667h; Inert atmosphere; Cooling with ice; | 91% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
Diphenylphosphine oxide
[(1,3,5,7-tetramethylcyclotetrasiloxane-1,3,5,7-tetrayl)tetra-2,1-ethanediyl]tetrakis[diphenylphosphine oxide]
Conditions | Yield |
---|---|
With tributyl borane In tetrahydrofuran; acetone at 0℃; for 14h; Solvent; Temperature; Reagent/catalyst; Inert atmosphere; | 90% |
With triethyl borane In tetrahydrofuran; hexane for 6h; Inert atmosphere; | 89% |
rac-3-sulfanylpropane-1,2-diol
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
Conditions | Yield |
---|---|
With 2,2-dimethoxy-2-phenylacetophenone In tetrahydrofuran at 20℃; for 2h; UV-irradiation; | 90% |
With 2,2'-azobis(isobutyronitrile) In acetonitrile at 70℃; for 18h; | 85% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
4-Iodoacetophenone
1-(4-vinylphenyl)ethanone
Conditions | Yield |
---|---|
Stage #1: 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane With tetrabutyl ammonium fluoride In tetrahydrofuran at 20℃; for 0.166667h; Stage #2: 4-Iodoacetophenone; bis(dibenzylideneacetone)-palladium(0) In tetrahydrofuran at 20℃; for 0.166667h; | 88% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
methyl 6-chloro-2-naphtoate
methyl 6-vinyl-2-naphthoate
Conditions | Yield |
---|---|
With XPhos; tetrabutyl ammonium fluoride; palladium diacetate In tetrahydrofuran at 67℃; for 24h; Inert atmosphere; Schlenk technique; | 88% |
m-iodonitrobenzene
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
1-nitro-3-vinyl-benzene
Conditions | Yield |
---|---|
Stage #1: 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane With tetrabutyl ammonium fluoride In tetrahydrofuran at 20℃; for 0.166667h; Stage #2: m-iodonitrobenzene; bis(dibenzylideneacetone)-palladium(0) In tetrahydrofuran at 20℃; for 0.166667h; | 87% |
bis(1,5-cyclooctadiene)nickel (0)
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
triphenylphosphine
[(Ni(PPh3))2(μ-(η-CH2CH(Me)Si(μ-O))4)]
Conditions | Yield |
---|---|
In diethyl ether byproducts: 1,5-C8H12; siloxane was added to Et2O soln. of equimolar amt. of Ni-complex and phosphine at ambient temp., mixt. was stirred overnight; volatiles were removed in vac., residue was taken up in pentane, mixt. was filtered through Celite, soln. was cooled to -30 °C, recrystd. from benzene at ambient temp., elem. anal.; | 86% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
para-chloroacetophenone
1-(4-vinylphenyl)ethanone
Conditions | Yield |
---|---|
With XPhos; tetrabutyl ammonium fluoride; palladium diacetate In tetrahydrofuran at 67℃; for 24h; Inert atmosphere; Schlenk technique; | 86% |
1-iodoheptadecafluorooctane
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
Conditions | Yield |
---|---|
With sodium hydrogencarbonate; sodium dithionite In water; acetonitrile for 2h; under sonification; | 85% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
4-iodobenzoic acid ethyl ester
ethyl 4-vinylbenzoate
Conditions | Yield |
---|---|
Stage #1: 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane With tetrabutyl ammonium fluoride In tetrahydrofuran at 20℃; for 0.166667h; Stage #2: 4-iodobenzoic acid ethyl ester; bis(dibenzylideneacetone)-palladium(0) In tetrahydrofuran at 20℃; for 0.166667h; | 85% |
bis(1,5-cyclooctadiene)nickel (0)
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
Tri(p-tolyl)phosphine
[(Ni(PC6H4CH3-4))2(μ-(η-CH2CH(Me)Si(μ-O))4)]
Conditions | Yield |
---|---|
In diethyl ether byproducts: 1,5-C8H12; siloxane was added to Et2O soln. of equimolar amt. of Ni-complex and phosphine at ambient temp., mixt. was stirred overnight; volatiles were removed in vac., residue was taken up in pentane, mixt. was filtered through Celite, soln. was cooled to -30 °C, elem. anal.; | 85% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
4-chlorobenzonitrile
4-nitrostyrene
Conditions | Yield |
---|---|
With XPhos; tetrabutyl ammonium fluoride; palladium diacetate In tetrahydrofuran at 67℃; for 24h; Inert atmosphere; Schlenk technique; | 85% |
Conditions | Yield |
---|---|
With 2,2'-azobis(isobutyronitrile) In acetonitrile at 70℃; for 18h; | 85% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
Conditions | Yield |
---|---|
With silver trifluoromethanesulfonate In toluene at 60℃; for 16h; Inert atmosphere; Schlenk technique; | 85% |
octamethylcyclotetrasiloxane
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
2-vinyl-2,4,4,6,6-pentamethylcyclotrisiloxane
Conditions | Yield |
---|---|
With triphenylphosphine; potassium hydroxide at 95 - 145℃; for 2h; Temperature; Concentration; Reagent/catalyst; Autoclave; | 83.4% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
o-iodo-methyl-benzoic acid
methyl o-vinylbenzoate
Conditions | Yield |
---|---|
Stage #1: 2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane With triphenyl-arsane; tetrabutyl ammonium fluoride In tetrahydrofuran at 20℃; for 0.166667h; Stage #2: o-iodo-methyl-benzoic acid; bis(dibenzylideneacetone)-palladium(0) In tetrahydrofuran at 20℃; for 8h; | 83% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
Ethyl 4-bromobenzoate
ethyl 4-vinylbenzoate
Conditions | Yield |
---|---|
With tetrabutyl ammonium fluoride; palladium(II) bromide; johnphos In tetrahydrofuran at 50℃; for 5h; | 83% |
2,4,6,8-tetramethyl-2,4,6,8-tetravinyl-cyclotetrasiloxane
di(p-tolyl)phosphine oxide
Conditions | Yield |
---|---|
With triethyl borane In tetrahydrofuran; toluene at 25℃; for 12h; Inert atmosphere; | 83% |
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