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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

1,2-Butadiene Manufacturer/High quality/Best price/In stock

Cas:590-19-2

Min.Order:1 Kilogram

FOB Price: $3.0

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 providi

Factory Supply Buta-1,2-diene

Cas:590-19-2

Min.Order:1

Negotiable

Type:Other

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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

1,2-Butadiene

Cas:590-19-2

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

1,2-BUTADIENE

Cas:590-19-2

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

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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

Manufacturer supply CAS 590-19-2 with competitive price

Cas:590-19-2

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

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-Butadiene

Cas:590-19-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Qingdao Beluga Import and Export Co., LTD

1,2-BUTADIENE CAS:590-19-2 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 intermediates

1,2-BUTADIENE CAS:590-19-2

Cas:590-19-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

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-Butadiene

Cas:590-19-2

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-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hebei Quanhe Biotechnology Co. LTD

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

1,2-Butadiene

Cas:590-19-2

Min.Order:1 Kilogram

FOB Price: $10.0 / 100.0

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-Butadiene Manufacturer

Cas:590-19-2

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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Henan Tianfu Chemical Co., Ltd.

CAS Number: 590-19-2 Molecular formula: C4H6 Molecular Weight: 54.09 EINECS number: 209-674-2 Related Categories: Chemical Synthesis; Compressed and Liquefied Gases; Synthetic Reagents Mol file: 590-19-2.mol

TIANFUCHEM--High purity 1,2-BUTADIENE factory price

Cas:590-19-2

Min.Order:1 Metric Ton

FOB Price: $20.0

Type:Lab/Research institutions

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GIHI CHEMICALS CO.,LIMITED

Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe

1,2-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hangzhou J&H Chemical Co., Ltd.

J&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals

1,2-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

1,2-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

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-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Circle Star Chem-medical Technology co.,Ltd.

good quality, competitive price, thoughtful after sale serviceAppearance:White to Off-White Solid Storage:Keep it in dry,shady and cool place Package:as your requirement Application:Pharma;Industry;Agricultural;chemical reaserch Transportation:by Sea

1,2-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

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DB BIOTECH CO., LTD

best seller Application:API

1,2-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

1,2-Butadiene cas 590-19-2Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

1,2-Butadiene cas 590-19-2

Cas:590-19-2

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-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Muhuang Technology Co., Ltd

best seller Application:API

1,2-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

ZHEJIANG JIUZHOU CHEM 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-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Xi'an Harmonious Natural Bio-Technology Co., Ltd.

Before-Sale Service:---Any inquiries will be replied within 12 hours.---Golden Manufactory under?ISO/GMP?with?large stock.---Dedication to quality,We?have?strict?quality?control?system.?---OEM/ODM Available.---Sample is available for your evaluation

1,2-BUTADIENE

Cas:590-19-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Wechem Chemical Co Ltd

1,2-Butadiene is a colorless, combustible gas with a characteristic odour. It is easily condensable under pressure. Butadiene-1,2 is soluble in hydrocarbons, alcohols and ethers, but virtually insoluble in water. Application:1,2-Butadiene is an al

1,2-Butadiene - ( C4H6 )

Cas:590-19-2

Min.Order:0 Metric Ton

Negotiable

Type:Trading Company

inquiry

HuBei Ipure Biotech CO.,ltd

HuBei ipure is a diversified product production and operation enterprise, with API, pharma intermediates, and other fine chemicals as well as R&D and pigments development and sales as one of the large enterprises, with more than 130 acres of pl

1,2-Butadiene Manufacturer/High quality/Best price/In stock

Cas:590-19-2

Min.Order:1 Gram

FOB Price: $1.0

Type:Trading Company

inquiry

Hangzhou KieRay Chem Co.,Ltd.

Hangzhou KieRaychem Co.,Ltd.is located in Yuhang District of Hangzhou City and specialized in the chemical product customization, development, sales, import and export. Current business is focused on fine chemicals, pharmaceutical materials and int

1,2-BUTADIENE

Cas:590-19-2

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai united Scientific Co.,Ltd.

United Scientific Company Located in Shanghai of China , is a competitive player in the global specialty and fine chemical market. Fenghua has both the expertise and flexibility to produce a wide range of chemicals. Focusing on developing the innovat

1,2-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Nanjing Raymon Biotech Co., Ltd.

1,2-ButadieneAppearance:Pls see the Details Storage:Store in dry and cool condition Package:25kg or according to cutomer's demand Application:Chemical research/Pharmaceutical intermediates Transportation:By Sea,by Air,By courier like DHL or Fedx. Por

1,2-Butadiene

Cas:590-19-2

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Wuxi Morality Chemical Co., Ltd

Do best quality products, erect the morality model Application:please email us, thanks

1,2-BUTADIENE

Cas:590-19-2

Min.Order:0

Negotiable

Type:Other

inquiry

Skyrun Industrial Co.,Ltd

Price, Purity Application:reagent

CSR081605-61383

Cas:590-19-2

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Synthetic route

3-methylpent-4-yn-2-ol
41998-65-6

3-methylpent-4-yn-2-ol

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 660℃; under 0.001 Torr;98%
Methylcyclopropen
3100-04-7

Methylcyclopropen

A

dimethylacetylene
503-17-3

dimethylacetylene

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

C

buta-1,3-diene
106-99-0

buta-1,3-diene

Conditions
ConditionsYield
With sulphur hexafluoride at 230.2℃; under 20.5 Torr; for 1.5h; Product distribution; Rate constant; Kinetics; var. time, var. pressure;A 91.31%
B 1.84%
C 6.85%
Product distribution; Quantum yield; Irradiation;
In gas under 0.1 - 6 Torr; Mechanism; Product distribution; Irradiation;
3-chloro-but-1-yne
21020-24-6

3-chloro-but-1-yne

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
61%
2-propynyl chloride
624-65-7

2-propynyl chloride

dimethyldiazene

dimethyldiazene

A

but-1-yne
107-00-6

but-1-yne

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 20℃; under 50 Torr; Kinetics; radical cross-combination reaction; Photolysis;A 60%
B 40%
3-buten-1-yne
689-97-4

3-buten-1-yne

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
With iron at 23 - 110℃; under 29420.3 Torr; Hydrogenation.in Gegenwart eines Polymerisationsinhibitors;
but-1-yne
107-00-6

but-1-yne

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
With cefaloridine at 280℃;
Cs-exchanged H(x)Cs30Na19(AlO2)54(SiO2)138 zeolite Ambient temperature;
but-1-yne
107-00-6

but-1-yne

A

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

B

buta-1,3-diene
106-99-0

buta-1,3-diene

Conditions
ConditionsYield
at 275℃; Leiten ueber Floridin;
dimethylacetylene
503-17-3

dimethylacetylene

cefaloridine
50-59-9

cefaloridine

A

but-1-yne
107-00-6

but-1-yne

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 280℃;
dimethylacetylene
503-17-3

dimethylacetylene

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
With cefaloridine at 280℃;
2-methyl-but-2-ene
513-35-9

2-methyl-but-2-ene

A

propene
187737-37-7

propene

B

ethene
74-85-1

ethene

C

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

D

isoprene
78-79-5

isoprene

Conditions
ConditionsYield
at 750℃; under 15 Torr;
2-methyl-but-2-ene
513-35-9

2-methyl-but-2-ene

A

naphthalene
91-20-3

naphthalene

B

ethene
74-85-1

ethene

C

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

D

benzene
71-43-2

benzene

Conditions
ConditionsYield
at 750℃; Produkt 5:Anthracen;
biphenyl
92-52-4

biphenyl

A

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

B

benzene
71-43-2

benzene

Conditions
ConditionsYield
at 1300 - 1500℃; Pyrolysis;
methylene
2465-56-7

methylene

dibutyl ether
142-96-1

dibutyl ether

A

butyl methyl ether
628-28-4

butyl methyl ether

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

C

n-butyl n-pentyl ether
18636-66-3

n-butyl n-pentyl ether

2,3-dibromo-but-1-ene
52111-97-4

2,3-dibromo-but-1-ene

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
With ethanol; zinc
phosphoric acid tributyl ester
126-73-8

phosphoric acid tributyl ester

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 500℃; Pyrolysis;
ethanol
64-17-5

ethanol

A

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

B

acetaldehyde
75-07-0

acetaldehyde

Conditions
ConditionsYield
Mechanism;

A

Ketene
463-51-4

Ketene

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

C

acetone
67-64-1

acetone

Conditions
ConditionsYield
at 600℃;
propane
74-98-6

propane

A

propene
187737-37-7

propene

B

methane
34557-54-5

methane

C

ethene
74-85-1

ethene

D

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 700 - 1000℃; bei der termischen Zersetzung; Produkt 5: Benzol; Produkt 6: Acetylen; Produkt 7: Kohlenstoff; Produkt 8: Wasserstoff;
1,2,2,3-tetrachloro-butane
79630-70-9

1,2,2,3-tetrachloro-butane

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
With zinc copper; ethanol
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
With ethanol; zinc
ethanol
64-17-5

ethanol

acetaldehyde
75-07-0

acetaldehyde

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
With aluminum oxide at 360 - 460℃;
n-butane
106-97-8

n-butane

A

butene-2
107-01-7

butene-2

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
nach dem Houdry-Prozess;
butan-1-ol
71-36-3

butan-1-ol

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 600℃;
2-pentene
109-68-2

2-pentene

A

penta-1,3-diene
504-60-9

penta-1,3-diene

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 800℃; under 147.1 Torr; bei Verduennung mit Stickstoff und Kontaktzeit von 0.07 sec;
2-pentene
109-68-2

2-pentene

A

penta-2,3-diene
591-96-8

penta-2,3-diene

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 760 - 833℃; bei Verduennung mit Wasserdampf und einer Kontaktzeit von 0.005-0.1 sec;
2-pentene
109-68-2

2-pentene

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 650℃; bei Verduennung mit Wasserdampf und Kontaktzeit von 0.4-1 sec;
C18H16

C18H16

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
at 750℃; under 0.001 Torr;
but-1-yne
107-00-6

but-1-yne

A

dimethylacetylene
503-17-3

dimethylacetylene

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
tetrahydrofuran; samarium at 79.9℃;
but-1-yne
107-00-6

but-1-yne

A

dimethylacetylene
503-17-3

dimethylacetylene

B

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

C

buta-1,3-diene
106-99-0

buta-1,3-diene

Conditions
ConditionsYield
calcium oxide at 30℃; Product distribution;
dimethylacetylene
503-17-3

dimethylacetylene

A

1-butylene
106-98-9

1-butylene

B

(Z)-2-Butene
590-18-1

(Z)-2-Butene

C

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

Conditions
ConditionsYield
With hydrogen; tetrahydrofuran; samarium variation of rare earth catalyst, selectivity;
With hydrogen; tetrahydrofuran; samarium at 79.9℃;
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

2-(methyldiphenylsilyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
200010-86-2

2-(methyldiphenylsilyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

(S)-3-(diphenylmethylsilyl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-butene

(S)-3-(diphenylmethylsilyl)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1-butene

Conditions
ConditionsYield
With catalyst:Pd(dba)2/R-1,1'-bina-2yl-P(3,5C6H3-Me2)2 In toluene 0°C, 22-90 h, bis(dibenzylideneacetone) palladium / (R)-(1,1')binaphthalenyl-2-yl-bis-(3,5-dimethyl-phenyl)-phosphane as catalyst;96%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

[IrRu(CO)4(μ-CH2)(bis(diphenylphosphino)methane)2][BF4]

[IrRu(CO)4(μ-CH2)(bis(diphenylphosphino)methane)2][BF4]

[IrRu(CO)4(κ1:κ1-MeCH=CCH2CH2)(bis(diphenylphosphino)methane)2][BF4]

[IrRu(CO)4(κ1:κ1-MeCH=CCH2CH2)(bis(diphenylphosphino)methane)2][BF4]

Conditions
ConditionsYield
In dichloromethane (Ar, Schlenk) methylallene was passed through a stirred soln. of complexin CH2Cl2 for 1 min at a rate 0.1 mL/s, stirred under methylallene atm. at ambient temp. for 24 h; reduced in vol., diethyl ether was added, ppt. was washed with diethyl ether (twice) and dried in vac.; elem. anal.;94%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

(1R,2R,6S,8R)-4-(Dimethyl-phenyl-silanyl)-2,9,9-trimethyl-3,5-dioxa-4-bora-tricyclo[6.1.1.02,6]decane
612835-98-0

(1R,2R,6S,8R)-4-(Dimethyl-phenyl-silanyl)-2,9,9-trimethyl-3,5-dioxa-4-bora-tricyclo[6.1.1.02,6]decane

(C6H7(C(CH3)2)(CH3)O2)BC(CH2)CH(Si(CH3)2C6H5)CH3

(C6H7(C(CH3)2)(CH3)O2)BC(CH2)CH(Si(CH3)2C6H5)CH3

Conditions
ConditionsYield
With (C5H5)(allyl)Pd; (R)-Ph2PC10H6C10H7 In toluene allene (1.2 equiv.) added to mixt. of P ligand and Pd compd. in toluene at room temp.; (R)-silylborane added; mixt. stirred at room temp. for 8-24 h; bulb-to-bulb distd. under vac.; ratio of (R,S) to (R,R) = 93:7;92%
(η5-C5H5)(Me)(NO)(PPh3)rhenium(II)

(η5-C5H5)(Me)(NO)(PPh3)rhenium(II)

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

(C5H5)Re(NO)(P(C6H5)3)(H2CCCHCH3)(1+)*BF4(1-)={(C5H5)Re(NO)(P(C6H5)3)(H2CCCHCH3)}{BF4}

(C5H5)Re(NO)(P(C6H5)3)(H2CCCHCH3)(1+)*BF4(1-)={(C5H5)Re(NO)(P(C6H5)3)(H2CCCHCH3)}{BF4}

Conditions
ConditionsYield
With HBF4*Et2O In chlorobenzene under inert gas; addn. of HBF4*OEt2 to a soln of (C5H5)Re(NO)(PPh3)(CH3) at -45°C with stirring, after 30 min addn. of 1,2-butadiene, stirring at room temp. for 5 d;; evapn., pptn., filtration, dissolving (CH2Cl2), addn. to hexane, pptn., crystn. (CH2Cl2/ether); elem. anal.;90%
bis(1,5-cyclooctadiene)nickel (0)
1295-35-8

bis(1,5-cyclooctadiene)nickel (0)

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

((C5H4N)2)Ni(CH2C(CHCH3)COO)

((C5H4N)2)Ni(CH2C(CHCH3)COO)

Conditions
ConditionsYield
With [2,2]bipyridinyl; carbon dioxide In tetrahydrofuran MeCH=C=CH2 was added at -78°C to a suspn. of (COD)2Ni and bipy in THF, reaction vessel was evacuated, CO2 admitted at -78°C, mixt. was warmed at 20°C and stirred for 48 h; soln. was concd. in vacuo, pentane added, ppt. was filtered off, washedwith pentane and dried in vacuo; elem. anal.;88.5%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

1,2-dimethoxy-1,1,2,2-tetramethyldisilane
10124-62-6

1,2-dimethoxy-1,1,2,2-tetramethyldisilane

2,3-bis(dimethylmethoxysilyl)but-1-ene

2,3-bis(dimethylmethoxysilyl)but-1-ene

Conditions
ConditionsYield
With butene-2; tetrakis(triphenylphosphine) palladium(0) at 120℃; for 15h;88%
With tetrakis(triphenylphosphine) palladium(0) In benzene at 120℃; for 15h;88%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

dimethylphenyl(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)silane
185990-03-8

dimethylphenyl(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)silane

2-[2-(Dimethyl-phenyl-silanyl)-1-methylene-propyl]-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane

2-[2-(Dimethyl-phenyl-silanyl)-1-methylene-propyl]-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane

Conditions
ConditionsYield
With ethriol phosphite; tris(dibenzylideneacetone)dipalladium (0) In tetrahydrofuran at 80℃; for 9h; Addition;88%
With catalyst: Pd2(dba)3 + etpo In tetrahydrofuran heating catalyst at 80°C for 5 min, addn. of diene and B-compound, heating at 80°C for 9 h; TLC;88%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

acetophenone
98-86-2

acetophenone

A

(3R,4R)-4-hydroxy-3-methyl-4-phenylpentan-2-one

(3R,4R)-4-hydroxy-3-methyl-4-phenylpentan-2-one

B

(S,S)-4-hydroxy-3-methyl-4-phenylpentan-2-one

(S,S)-4-hydroxy-3-methyl-4-phenylpentan-2-one

Conditions
ConditionsYield
Stage #1: 2,3-dimethylbutene; acetophenone With (R)-Cl-MeO-BiPhep; bis(pinacol)diborane; copper(l) chloride; sodium t-butanolate In tetrahydrofuran at 22℃; for 18h; Inert atmosphere;
Stage #2: With sodium perborate In tetrahydrofuran; water at 22℃; for 1h; Inert atmosphere; enantioselective reaction;
A n/a
B 88%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

methoxypentamethyldisilane
18107-29-4

methoxypentamethyldisilane

3-(Methoxy-dimethyl-silanyl)-2-trimethylsilanyl-but-1-ene

3-(Methoxy-dimethyl-silanyl)-2-trimethylsilanyl-but-1-ene

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0) In benzene at 120℃; for 15h;87%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

acetophenone
98-86-2

acetophenone

(S,S)-4-hydroxy-3-methyl-4-phenylpentan-2-one

(S,S)-4-hydroxy-3-methyl-4-phenylpentan-2-one

Conditions
ConditionsYield
Stage #1: 2,3-dimethylbutene; acetophenone With 2,2'-bis-(diphenylphosphino)-1,1'-binaphthyl; bis(pinacol)diborane; copper(l) chloride; sodium t-butanolate In tetrahydrofuran at 22℃; for 18h; Inert atmosphere;
Stage #2: With sodium perborate In tetrahydrofuran; water at 22℃; for 1h; Inert atmosphere; diastereoselective reaction;
87%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

1,1,2,2-tetramethoxy-1,2-dimethyl-disilane
18107-32-9

1,1,2,2-tetramethoxy-1,2-dimethyl-disilane

2,3-Bis-(dimethoxy-methyl-silanyl)-but-1-ene

2,3-Bis-(dimethoxy-methyl-silanyl)-but-1-ene

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0) In benzene at 120℃; for 15h;86%
[RhOs(CO)4(μ-CH2)(dppm)2][BF4]

[RhOs(CO)4(μ-CH2)(dppm)2][BF4]

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

[RhOs(CO)2(μ-η3:η1-CH(CH3)C(CH2)2)(dppm)2][BF4]

[RhOs(CO)2(μ-η3:η1-CH(CH3)C(CH2)2)(dppm)2][BF4]

Conditions
ConditionsYield
With trimethylamine oxide In dichloromethane byproducts: CO; (Ar); passing methylallene through a soln. of cluster in CH2Cl2, addn. of amine oxide, stirring for 30 min; filtration, addn. of pentane, washing ppt. with ether, drying in argon; elem. anal.;86%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

[IrOs(CO)4(μ-Ph2PCH2PPh2)2][BF4]

[IrOs(CO)4(μ-Ph2PCH2PPh2)2][BF4]

[IrOs(CO)3(μ-η3:κ1-CH2CCHCH3)(μ-Ph2PCH2PPh2)2][BF4]
1380397-20-5

[IrOs(CO)3(μ-η3:κ1-CH2CCHCH3)(μ-Ph2PCH2PPh2)2][BF4]

Conditions
ConditionsYield
In dichloromethane byproducts: CO; (Ar); CH3CHCCH2 passed through a soln. of Ir complex for 1 min, stirred under CH3CHCCH2 for 4 h at ambient temp.; concd., pptd. (Et2O), washed (Et2O), dried (vac.); elem. anal.;85%
With (CH3)3NO In not given (Ar);
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

1,1,2-trichloro-1,2,2-trimethyldisilane
13528-88-6

1,1,2-trichloro-1,2,2-trimethyldisilane

2,3-Bis-(dichloro-methyl-silanyl)-but-1-ene

2,3-Bis-(dichloro-methyl-silanyl)-but-1-ene

Conditions
ConditionsYield
With tetrakis(triphenylphosphine) palladium(0) In 1,3,5-trimethyl-benzene at 100℃; for 5h;84%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

1,1,2,2-tetrachloro-1,2-dimethyldisilane
4518-98-3

1,1,2,2-tetrachloro-1,2-dimethyldisilane

2,3-Bis-(dichloro-methyl-silanyl)-but-1-ene

2,3-Bis-(dichloro-methyl-silanyl)-but-1-ene

Conditions
ConditionsYield
With butene-2; tetrakis(triphenylphosphine) palladium(0) at 100℃; for 5h;84%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

n-C8H17X

n-C8H17X

A

3-methyl-undeca-1,2-diene
59409-51-7

3-methyl-undeca-1,2-diene

B

2,3-dodecadiene
56956-47-9

2,3-dodecadiene

C

3-methylundec-1-yne
77764-66-0

3-methylundec-1-yne

Conditions
ConditionsYield
With n-butyllithium In tetrahydrofuran; hexane -78 deg C, 30 min -> room temperature;A 15%
B 84%
C 1%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

4-nitrobenzaldehdye
555-16-8

4-nitrobenzaldehdye

1-(4-nitrophenyl)-2-methylbut-3-en-1-ol

1-(4-nitrophenyl)-2-methylbut-3-en-1-ol

Conditions
ConditionsYield
With isopropyl alcohol; caesium carbonate In ethyl acetate; 1,2-dichloro-ethane at 75℃; for 14h;83%
Pt(2+)*CH3(1-)*C8H12={PtCH3(C8H12)}(1+)

Pt(2+)*CH3(1-)*C8H12={PtCH3(C8H12)}(1+)

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

hydrotris(1H-pyrazol-1-yl)borate(1-)

hydrotris(1H-pyrazol-1-yl)borate(1-)

{HB(C3H3N2)3}(1-)*Pt(2+)*CH3CHCCH2*CH3(1-)={HB(C3H3N2)3}Pt(CH3)(CH3CHCCH2)

{HB(C3H3N2)3}(1-)*Pt(2+)*CH3CHCCH2*CH3(1-)={HB(C3H3N2)3}Pt(CH3)(CH3CHCCH2)

Conditions
ConditionsYield
In not given in react. of (HB(pz)3)(1-) with the solvated cation (Pt(CH3)(COD))(1+) an insol. and probably polymeric product is formed; this reacts readily with substituted allene;;83%
In not given in react. of (HB(pz)3)(1-) with the solvated cation (Pt(CH3)(COD))(1+) an insol. and probably polymeric product is formed; this reacts readily with substituted allene;;83%
4-nitrobenzyl chloride
619-73-8

4-nitrobenzyl chloride

2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

1-(4-nitrophenyl)-2-methylbut-3-en-1-ol

1-(4-nitrophenyl)-2-methylbut-3-en-1-ol

Conditions
ConditionsYield
caesium carbonate In ethyl acetate; 1,2-dichloro-ethane at 75℃; for 14h;82%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

cyclohexane carbonitrile
766-05-2

cyclohexane carbonitrile

bis(pinacol)diborane
73183-34-3

bis(pinacol)diborane

C17H32BNO2

C17H32BNO2

Conditions
ConditionsYield
Stage #1: 2,3-dimethylbutene; cyclohexane carbonitrile; bis(pinacol)diborane With (2R)-1-[(1R)-1-[bis(1,1-dimethylethyl)phosphino]ethyl]-2-(diphenylphosphino)ferrocene; mesitylcopper(I) In methanol; diethyl ether at -40℃; for 10h;
Stage #2: With aluminium(III) triflate In methanol for 2h;
Stage #3: With methanol; lithium borohydride at -78℃; for 4h; stereoselective reaction;
81%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

1,2-bis-(dicyclohexylphosphino)ethane
23743-26-2

1,2-bis-(dicyclohexylphosphino)ethane

((C6H11)2PCH2CH2P(C6H11)2)Ni(CH2C(CHCH3)COO)

((C6H11)2PCH2CH2P(C6H11)2)Ni(CH2C(CHCH3)COO)

Conditions
ConditionsYield
With carbon dioxide In tetrahydrofuran MeCH=C=CH2 was added at -78°C to a suspn. of (CDT)Ni and diphosphine in THF, reaction vessel was evacuated, CO2 admitted at -78°C, mixt. was warmed at 20°C and stirred for 48 h; soln. was concd. in vacuo, pentane added, ppt. was filtered off, washedwith pentane and dried in vacuo; elem. anal.;80.2%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

dimethyl acetylenedicarboxylate
762-42-5

dimethyl acetylenedicarboxylate

1,2,3,4-Tetrakis(carbomethoxy)-5-ethyl-benzol

1,2,3,4-Tetrakis(carbomethoxy)-5-ethyl-benzol

Conditions
ConditionsYield
With <2,6-(ipr)2-C6H3-N=CH-CH=N-2,6-(ipr)2C6H3>Pd-(COOMe)4-cyclopentadiene In toluene at 40℃; for 48h;80%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

[IrRu(CO)4(bis(diphenylphosphino)methane)2][BF4]
323185-93-9

[IrRu(CO)4(bis(diphenylphosphino)methane)2][BF4]

[IrRu(CO)4(μ-C=C(H)CH2CH3)(μ-Ph2PCH2PPh2)2][BF4]2

[IrRu(CO)4(μ-C=C(H)CH2CH3)(μ-Ph2PCH2PPh2)2][BF4]2

Conditions
ConditionsYield
In dichloromethane (N2); Schlenk technique; stirred soln. of Ir-Ru complex in CH2Cl2 was satd. with methylallene; stirred at ambient temp. for 24 h; pentane added; filtered; rinsed (pentane); dried (vac.);80%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

4-methoxy-benzaldehyde
123-11-5

4-methoxy-benzaldehyde

1-(4-methoxyphenyl)-2-methylbut-3-en-1-ol

1-(4-methoxyphenyl)-2-methylbut-3-en-1-ol

Conditions
ConditionsYield
With isopropyl alcohol; caesium carbonate In ethyl acetate; 1,2-dichloro-ethane at 75℃; for 14h;79%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

methyl 3,3,3-trifluoropyruvate
13089-11-7

methyl 3,3,3-trifluoropyruvate

methyl 2-hydroxy-2-trifluoromethylhex-4-ynoate

methyl 2-hydroxy-2-trifluoromethylhex-4-ynoate

Conditions
ConditionsYield
at 100℃; for 24h;78%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

1-phenylethan-1-iminium chloride
107836-65-7

1-phenylethan-1-iminium chloride

bis(pinacol)diborane
73183-34-3

bis(pinacol)diborane

C18H28BNO2

C18H28BNO2

Conditions
ConditionsYield
With C57H66N2O3S; copper(l) chloride; sodium t-butanolate In tetrahydrofuran at 22℃; for 24h; stereoselective reaction;78%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

benzaldehyde
100-52-7

benzaldehyde

2-methyl-1-phenyl-3-butene-1-ol
25201-44-9

2-methyl-1-phenyl-3-butene-1-ol

Conditions
ConditionsYield
With isopropyl alcohol; caesium carbonate In ethyl acetate; 1,2-dichloro-ethane at 75℃; for 14h;77%
2,3-dimethylbutene
590-19-2

2,3-dimethylbutene

bis(pinacol)diborane
73183-34-3

bis(pinacol)diborane

(R)-4,4,5,5-tetramethyl-2-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)but-1-en-2-yl)-1,3,2-dioxaborolane

(R)-4,4,5,5-tetramethyl-2-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)but-1-en-2-yl)-1,3,2-dioxaborolane

Conditions
ConditionsYield
With tris-(dibenzylideneacetone)dipalladium(0) In toluene room temp., 14 h; chromy. on silica;77%
With tris-(dibenzylideneacetone)dipalladium(0) In toluene room temp., 14 h; chromy. on silica;68%

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