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Dayang Chem (Hangzhou) Co.,Ltd.

Dayangchem's 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. DayangChem can provide different quantities

p-Dioxane, compd. with bromine (1:1)

Cas:15481-39-7

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

Manufacturer supply CAS 15481-39-7 with best quality

Cas:15481-39-7

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

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

p-Dioxane, compd. with bromine (1:1)

Cas:15481-39-7

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

p-Dioxane, compd. with bromine (1:1)

Cas:15481-39-7

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

p-Dioxane, compd. with bromine (1:1)

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung, LG, Merck, Thermo Fisher Scientific and so o

15481-39-7 BROMINE-1,4-DIOXANE COMPLEX

Cas:15481-39-7

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

15481-39-7 CAS NO.15481-39-7

Cas:15481-39-7

Min.Order:1 Metric Ton

FOB Price: $7.0 / 8.0

Type:Trading Company

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Henan Allgreen Chemical Co.,Ltd

high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea

BroMine - 1,4-Dioxane CoMplex

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Manufacturers

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Xi`an Eastling Biotech Co., Ltd.

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:Beijing or Guangzhou

BROMINE-1,4-DIOXANE COMPLEX

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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

BroMine - 1,4-Dioxane CoMplex

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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 beige crystals Storage:Room temperature with sealed well Package:according to the clients requirement Application:Use a

BROMINE-1,4-DIOXANE COMPLEX

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Trading Company

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Changchun Artel lmport and Export trade company

Supply top quality products with a reasonable price Application:api

15481-39-7

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Trading Company

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Hangzhou Fandachem Co.,Ltd

p-Dioxane, compd. with bromine (1:1) cas 15481-39-7Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

p-Dioxane, compd. with bromine (1:1) cas 15481-39-7

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Other

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Shanghai Chinqesen Biotechnology Co., Ltd.

Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen

15481-39-7

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Trading Company

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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

BROMINE-1,4-DIOXANE COMPLEX

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Trading Company

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Jilin haofei import and export trade Co.,Ltd

Price, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right

15481-39-7 CAS NO.15481-39-7

Cas:15481-39-7

Min.Order:0

Negotiable

Type:Trading Company

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Synthetic route

1,4-dioxane
123-91-1

1,4-dioxane

bromine
7726-95-6

bromine

dioxane dibromide
15481-39-7

dioxane dibromide

Conditions
ConditionsYield
at 20℃; for 2h; Cooling with ice;65%
1,4-dioxane
123-91-1

1,4-dioxane

dioxane dibromide
15481-39-7

dioxane dibromide

Conditions
ConditionsYield
With bromine at 0 - 23℃; for 3h;57%
With bromine
With bromine10 g
oxirane
75-21-8

oxirane

dioxane dibromide
15481-39-7

dioxane dibromide

Conditions
ConditionsYield
With bromine im geschlossenen Gefaess;
dioxane dibromide
15481-39-7

dioxane dibromide

2,4-diethoxy-3-methylphenol
162976-09-2

2,4-diethoxy-3-methylphenol

6-bromo-2,4-diethoxy-3-methylphenol
1061630-50-9

6-bromo-2,4-diethoxy-3-methylphenol

Conditions
ConditionsYield
With potassium carbonate In dichloromethane at -78 - 20℃; for 0.916667h;88%
dioxane dibromide
15481-39-7

dioxane dibromide

7-cinnamyloxy-4-methylcoumarin

7-cinnamyloxy-4-methylcoumarin

3-bromo-7-(2,3-dibromo-3-phenylpropoxy)-4-methylcoumarin
1374992-44-5

3-bromo-7-(2,3-dibromo-3-phenylpropoxy)-4-methylcoumarin

Conditions
ConditionsYield
at 0 - 20℃; for 4h; Neat (no solvent); regioselective reaction;86%
4-methyl-7-methoxy-2H-1-benzopyran-2-one
2555-28-4

4-methyl-7-methoxy-2H-1-benzopyran-2-one

dioxane dibromide
15481-39-7

dioxane dibromide

3-bromo-7-methoxy-4-methylcoumarin
75908-67-7

3-bromo-7-methoxy-4-methylcoumarin

Conditions
ConditionsYield
at 0 - 20℃; for 2h; Neat (no solvent); regioselective reaction;85%
7-hydroxy-4-methyl-chromen-2-one
90-33-5, 79566-13-5

7-hydroxy-4-methyl-chromen-2-one

dioxane dibromide
15481-39-7

dioxane dibromide

3-bromo-7-hydroxy-4-methyl-chromen-2-one
55977-10-1

3-bromo-7-hydroxy-4-methyl-chromen-2-one

Conditions
ConditionsYield
at 0 - 20℃; for 3h; Neat (no solvent); regioselective reaction;84%
4-methyl-2H-chromen-2-one
607-71-6

4-methyl-2H-chromen-2-one

dioxane dibromide
15481-39-7

dioxane dibromide

3-bromo-4-hydroxycoumarin
50361-81-4

3-bromo-4-hydroxycoumarin

Conditions
ConditionsYield
at 0 - 20℃; for 2h; Neat (no solvent); regioselective reaction;83%
7-allyloxycoumarin
31005-03-5

7-allyloxycoumarin

dioxane dibromide
15481-39-7

dioxane dibromide

7-(2,3-dibromopropoxy)coumarin

7-(2,3-dibromopropoxy)coumarin

Conditions
ConditionsYield
at 0 - 20℃; for 0.5h; Neat (no solvent); regioselective reaction;83%
bis[4,6-di-tert-butyl-N-(2,6-diisopropylphenyl)-o-amidophenolato]tin(IV) tetrahydrofuratate
922509-12-4

bis[4,6-di-tert-butyl-N-(2,6-diisopropylphenyl)-o-amidophenolato]tin(IV) tetrahydrofuratate

dioxane dibromide
15481-39-7

dioxane dibromide

dibromobis(4,6-di-tert-butyl-N-(2,6-diisopropylphenyl)-o-iminobenzosemiquinonato)tin(IV)

dibromobis(4,6-di-tert-butyl-N-(2,6-diisopropylphenyl)-o-iminobenzosemiquinonato)tin(IV)

Conditions
ConditionsYield
In acetonitrile exclusion of air and moisture; soln. of Br2*diox (1 mmol) in MeCN added dropwise to soln. of Sn complex (1 mmol) in MeCN; soln. concd., stored at -12°C for 12 h, crystals isolated; elem. anal.;82.3%
[(η5-methylcyclopentadienyl)4Fe4(μ4-η2:η2:η1:η1-HCCH)2]

[(η5-methylcyclopentadienyl)4Fe4(μ4-η2:η2:η1:η1-HCCH)2]

dioxane dibromide
15481-39-7

dioxane dibromide

[(η5-C5H4Me)4Fe4(HCCH)2](Br3)2

[(η5-C5H4Me)4Fe4(HCCH)2](Br3)2

Conditions
ConditionsYield
In dichloromethane (N2); using Schlenk techniques; addn. of excess of Br2*C4H8O2 to soln. of (η5-C5H4Me)4Fe4(HCCH)2 in CH2Cl2 at room temp. under constant stirring; pptn., filtration, washing with CH2Cl2, extn. with MeCN; removal of solvent, elem. anal.;79%
7-hydroxy-2H-chromen-2-one
93-35-6

7-hydroxy-2H-chromen-2-one

dioxane dibromide
15481-39-7

dioxane dibromide

3-bromo-7-hydroxy-2H-1-benzopyran-2-one
146900-52-9

3-bromo-7-hydroxy-2H-1-benzopyran-2-one

Conditions
ConditionsYield
at 0 - 20℃; for 2h; Neat (no solvent); regioselective reaction;79%
7-methoxycoumarin
531-59-9

7-methoxycoumarin

dioxane dibromide
15481-39-7

dioxane dibromide

3-bromo-7-methoxy-2H-chromen-2-one
72167-80-7

3-bromo-7-methoxy-2H-chromen-2-one

Conditions
ConditionsYield
at 0 - 20℃; for 3h; Neat (no solvent); regioselective reaction;79%
7-amino-4-methylcoumarin
103264-02-4

7-amino-4-methylcoumarin

dioxane dibromide
15481-39-7

dioxane dibromide

6-amino-5,7-dibromo-4-methylcoumarin
1374992-46-7

6-amino-5,7-dibromo-4-methylcoumarin

Conditions
ConditionsYield
at 0 - 20℃; for 2h; Neat (no solvent); regioselective reaction;77%
coumarin
91-64-5

coumarin

dioxane dibromide
15481-39-7

dioxane dibromide

(3R*,4R*)-3,4-dibromo-3,4-dihydrocoumarin

(3R*,4R*)-3,4-dibromo-3,4-dihydrocoumarin

Conditions
ConditionsYield
at 0 - 20℃; for 0.5h; Neat (no solvent); regioselective reaction;76%
dioxane dibromide
15481-39-7

dioxane dibromide

7-propargyloxy-4-methyl-2H-chromen-2-one
67268-43-3

7-propargyloxy-4-methyl-2H-chromen-2-one

3-bromo-7-(2,3-dibromoallyloxy)-4-methylcoumarin
1374992-45-6

3-bromo-7-(2,3-dibromoallyloxy)-4-methylcoumarin

Conditions
ConditionsYield
at 0 - 20℃; for 2h; Neat (no solvent); regioselective reaction;73%
7-hydroxy-2H-chromen-2-one
93-35-6

7-hydroxy-2H-chromen-2-one

dioxane dibromide
15481-39-7

dioxane dibromide

3,8-dibromo-7-hydroxycoumarin
1374992-42-3

3,8-dibromo-7-hydroxycoumarin

Conditions
ConditionsYield
at 0 - 20℃; for 4h; Neat (no solvent); regioselective reaction;72%
(3,6-di-tert-butylcatecholato)dichlorotin(IV) ditetrahydrofuranate
873853-16-8

(3,6-di-tert-butylcatecholato)dichlorotin(IV) ditetrahydrofuranate

dioxane dibromide
15481-39-7

dioxane dibromide

(3,6-di-tert-butyl-o-benzosemiquinonato)dichlorobromotin(IV) tetrahydrofuranate

(3,6-di-tert-butyl-o-benzosemiquinonato)dichlorobromotin(IV) tetrahydrofuranate

Conditions
ConditionsYield
In acetonitrile a soln. of Br compd. added dropwise to a soln. of Sn compd.; concd., stored at -12°C overnight; elem. anal., TGA;72%
(3,6-di-tert-butylcatecholato)dichlorotin(IV) ditetrahydrofuranate
1357090-57-3

(3,6-di-tert-butylcatecholato)dichlorotin(IV) ditetrahydrofuranate

dioxane dibromide
15481-39-7

dioxane dibromide

(3,6-di-tert-butyl-o-benzosemiquinonato)tribromotin(IV) tetrahydrofuranate

(3,6-di-tert-butyl-o-benzosemiquinonato)tribromotin(IV) tetrahydrofuranate

Conditions
ConditionsYield
In acetonitrile a soln. of Br compd. added dropwise to a soln. of Sn compd.; concd., stored at -12°C overnight; elem. anal., TGA;71%
Cp2Nb(SiHMe2)2H
252027-47-7

Cp2Nb(SiHMe2)2H

dioxane dibromide
15481-39-7

dioxane dibromide

A

[NbH(C5H5)2(SiBr(CH3)2)2]
252027-52-4

[NbH(C5H5)2(SiBr(CH3)2)2]

B

NbH(C5H5)2(Si(CH3)2(2)H)(Si(CH3)2Br)

NbH(C5H5)2(Si(CH3)2(2)H)(Si(CH3)2Br)

Conditions
ConditionsYield
In diethyl ether under Ar; to Nb complex was added a soln. of Br2*O2C4H8 (1 equiv.) in ether, the mixt. was stirred overnight at 25°C; the mixt. was filtered, the volatiles were removed; Nb(C5H5)2H(Si(CH3)2((2)H)(Si(CH3)2Br) was observed only by NMR;A 70%
B n/a
6-aminocoumarin
14415-44-2

6-aminocoumarin

dioxane dibromide
15481-39-7

dioxane dibromide

5,7-dibromo-6-aminocoumarin
866475-81-2

5,7-dibromo-6-aminocoumarin

Conditions
ConditionsYield
at 0 - 20℃; for 1h; Neat (no solvent); regioselective reaction;70%
3-Trimethylsilylinden
18053-75-3

3-Trimethylsilylinden

dioxane dibromide
15481-39-7

dioxane dibromide

1-bromoindene
61083-09-8

1-bromoindene

Conditions
ConditionsYield
In tetrahydrofuran at -78℃;66%
6-aminocoumarin
14415-44-2

6-aminocoumarin

dioxane dibromide
15481-39-7

dioxane dibromide

6-amino-5-bromo-2H-chromen-2-one

6-amino-5-bromo-2H-chromen-2-one

Conditions
ConditionsYield
at 0 - 20℃; for 1h; Neat (no solvent); regioselective reaction;62%
7-allyloxy-4-methyl-2H-chromen-2-one
3993-57-5

7-allyloxy-4-methyl-2H-chromen-2-one

dioxane dibromide
15481-39-7

dioxane dibromide

3-bromo-7-(2,3-dibromopropoxy)-4-methylcoumarin
1374992-43-4

3-bromo-7-(2,3-dibromopropoxy)-4-methylcoumarin

Conditions
ConditionsYield
at 0 - 20℃; for 4h; Neat (no solvent); regiospecific reaction;56%
Cp2Nb(SiHMe2)2H
252027-47-7

Cp2Nb(SiHMe2)2H

dioxane dibromide
15481-39-7

dioxane dibromide

Cp2Nb(SiHMe2)H(SiBrMe2)
717827-34-4

Cp2Nb(SiHMe2)H(SiBrMe2)

Conditions
ConditionsYield
anaerobic and anhydrous conditions; 0.5 equiv. of Br2*dioxane;44%
1-phenyl-2,8,9-trioxa-5-aza-1-silabicyclo{3.3.3}undecane
2097-19-0

1-phenyl-2,8,9-trioxa-5-aza-1-silabicyclo{3.3.3}undecane

dioxane dibromide
15481-39-7

dioxane dibromide

A

1-bromosilatrane
33446-82-1

1-bromosilatrane

B

1-[2-(2-bromoethoxy)ethoxy]silatrane

1-[2-(2-bromoethoxy)ethoxy]silatrane

Conditions
ConditionsYield
In dichloromethane at 20℃; Substitution;A 39%
B 11.7%
dioxane dibromide
15481-39-7

dioxane dibromide

1-vinylsilatrane
2097-18-9

1-vinylsilatrane

A

1-bromosilatrane
33446-82-1

1-bromosilatrane

B

1-[2-(2-bromoethoxy)ethoxy]silatrane

1-[2-(2-bromoethoxy)ethoxy]silatrane

Conditions
ConditionsYield
In dichloromethane at 20℃; Substitution;A 16.4%
B 14.6%

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