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
Cas:628-39-7
Min.Order:1 Kilogram
FOB Price: $3.0
Type:Lab/Research institutions
inquiryDiethyldiselenide with good quality and competitive price from Henan Tianfu Chemical: Henan Tianfu Chemical Co.,LTD 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 w
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
Cas:628-39-7
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
Type:Trading Company
inquiry1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized
Cas:628-39-7
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryDIETHYLDISELENIDE CAS:628-39-7 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 intermedi
Cas:628-39-7
Min.Order:1 Gram
Negotiable
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:628-39-7
Min.Order:1 Kilogram
Negotiable
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
Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
Cas:628-39-7
Min.Order:0 Metric Ton
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
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
Cas:628-39-7
Min.Order:10 Gram
FOB Price: $100.0
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:628-39-7
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
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
ISO9001 Appearance: Red Liquid Assay ( GC ): 98.0%min Boiling Point : 82-85℃/20mmHg Appearance:Red Liquid Storage:Store in dry and cool place with good seal Package:25kg/ Plastic drum Application:Pharmaceutical Intermediates Transportati
We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp
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
high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier
Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
Cas:628-39-7
Min.Order:1 bottle
Negotiable
Type:Lab/Research institutions
inquiryhigh qualityAppearance:white crystalline powder Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
Cas:628-39-7
Min.Order:0
Negotiable
Type:Manufacturers
inquiryAnsciep 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
"HANGZHOU TIANYE CHEMICALS Co.LTD , Located in Eastern Science and Innovation Park Hangzhou .We are a high-tech enterprise specialized in technical research and development, production, development and trade of chemical products. We supply Multiple s
Diethyldiselenide cas 628-39-7Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Hangzhou ZeErRui Chemical Co., Ltd. located in Lingang industrial areas, our plant covers an area of 6000 square meters.ZeErRui dedicated to the development, production and marketing of chemicals. We have earned ourselves a good reputation at home an
Cas:628-39-7
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry1. Timely and efficient service to ensure communication with customers2. Produce products of different specifications and sizes according to your requirements.3. Quality procedures and standards recognized by SGS. Advanced plant equipment ensures sta
Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Good Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
Conditions | Yield |
---|---|
With potassium hydroxide; selenium; hydrazine hydrate In water at 40 - 45℃; | 97% |
With potassium hydroxide; selenium(IV) oxide; hydrazine hydrate In water at 40 - 45℃; | 95% |
With disodium diselenide In N,N-dimethyl-formamide at 50℃; for 0.5h; | 88% |
Conditions | Yield |
---|---|
With disodium diselenide; tetrabutylammomium bromide In water for 0.05h; | 90% |
With potassium hydroxide; selenium; hydrazine hydrate In water at 60 - 70℃; | 89% |
With sodium hydroxide; selenium; hydrazine hydrate 1.) MeOH, 6 h; Multistep reaction; | |
With selenium; copper(II) oxide; potassium hydroxide In dimethyl sulfoxide at 90℃; Inert atmosphere; |
Conditions | Yield |
---|---|
With disodium diselenide; sodium hydrogen selenide; N,N-dimethyl-formamide In ethanol at 60 - 70℃; for 7h; | 90% |
1,2-bis(ethylseleno)-1-phenylethene
A
2,5-bis-phenylselenophene
B
diethyl diselenide
Conditions | Yield |
---|---|
at 180℃; for 25h; | A n/a B n/a C 81% D n/a |
n-butyl magnesium bromide
(Z)-1,2-bis(ethylseleno)ethene
A
diethyl diselenide
B
octane
C
cis-5-decene
Conditions | Yield |
---|---|
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether at 20℃; Further byproducts given; | A 145 mg B 226 mg C 78% D 42 mg |
Conditions | Yield |
---|---|
With bis(trimethylsilyl)selenide; boron trifluoride diethyl etherate In dichloromethane at 0℃; for 6h; | A 54% B n/a |
(chloromethyl)trimethoxysilane
A
diethyl diselenide
B
bis(trimethoxysilylmethyl) selenide
Conditions | Yield |
---|---|
In tetrahydrofuran for 1.5h; Heating; | A n/a B n/a C n/a D 35% |
bis-(1-bromo-vinyl) sulfoxide
divinyl selenide
A
diethyl diselenide
B
di<2-(vinylseleno)vinyl> sulfoxide
Conditions | Yield |
---|---|
With ammonia; sodium for 0.666667h; | A 20% B 12% |
Conditions | Yield |
---|---|
With disodium diselenide | |
With potassium diselenide |
Conditions | Yield |
---|---|
With aluminum selenide at 250 - 300℃; |
Conditions | Yield |
---|---|
With aluminum selenide at 250 - 300℃; |
Conditions | Yield |
---|---|
With air | |
With oxygen for 24h; |
Conditions | Yield |
---|---|
With potassium diselenide |
ethyl iodide
1-(2-Chloro-ethylsulfanyl)-propyne
A
diethyl diselenide
B
1-ethylsulfanyl-propyne
Conditions | Yield |
---|---|
With lithium selenide In ammonia |
Conditions | Yield |
---|---|
at 300 - 350℃; |
ethyl bromide
A
diethyl diselenide
B
diethyl-triselenide
C
diethyltrisulfane
Conditions | Yield |
---|---|
With sodium hydroxide; selenium; sulfur; hydrazine hydrate In water at 52 - 56℃; Further byproducts given; |
ethyl bromide
A
Diethyl disulfide
B
diethyl diselenide
C
diethyl sulphide
D
diethylselenium
Conditions | Yield |
---|---|
With sodium hydroxide; selenium; sulfur; hydrazine hydrate In water at 35℃; Product distribution; Further Variations:; Reagents; | A 29.7 % Chromat. B 36.2 % Chromat. C 2.2 % Chromat. D 5.5 % Chromat. |
ethyl bromide
A
Diethyl disulfide
B
diethyl diselenide
C
diethylselenium
D
ethyl ethylselenosulfenate
Conditions | Yield |
---|---|
With sodium hydroxide; selenium; sulfur; hydrazine hydrate In water at 35℃; Further byproducts given; | A 29.7 % Chromat. B 36.2 % Chromat. C 5.5 % Chromat. D 25.9 % Chromat. |
ethyl bromide
A
diethyl diselenide
B
diethyl telluride
C
diethyl ditelluride
Conditions | Yield |
---|---|
With sodium hydroxide; tellurium; sulfur; hydrazine hydrate In water at 35℃; Further byproducts given; | A 43.7 % Chromat. B 3.5 % Chromat. C 30.3 % Chromat. D 1.03 % Chromat. |
diethyl diselenide
Conditions | Yield |
---|---|
With potassium fluoride; copper(l) chloride In 1,4-dioxane at 110℃; for 24h; Inert atmosphere; stereospecific reaction; | 96% |
Conditions | Yield |
---|---|
In hexane at 20℃; for 1h; Inert atmosphere; | 95% |
Conditions | Yield |
---|---|
In hexane at 20℃; for 1h; Inert atmosphere; | 93% |
diethyl diselenide
1,3-di-tert-butyl-2,2-dimethyl-1,3,2,4-diazasilagermaetidine
Conditions | Yield |
---|---|
In hexane at 70℃; for 1h; | 92% |
diethyl diselenide
methyl 2-(phenylethynyl)benzoate
4-(ethylselanyl)-3-phenyl-1H-isochromen-1-one
Conditions | Yield |
---|---|
With Oxone In ethanol for 0.666667h; Sonication; regioselective reaction; | 90% |
With tetrabutylammonium tetrafluoroborate In acetonitrile at 20℃; for 0.0833333h; Electrochemical reaction; Green chemistry; | 89% |
Stage #1: diethyl diselenide With iron(III) chloride In dichloromethane at 20℃; for 0.333333h; Stage #2: methyl 2-(phenylethynyl)benzoate In dichloromethane at 20℃; for 18h; regioselective reaction; | 85% |
Conditions | Yield |
---|---|
With potassium hydroxide; selenium; hydrazine hydrate In water at 40 - 45℃; | 97% |
With potassium hydroxide; selenium(IV) oxide; hydrazine hydrate In water at 40 - 45℃; | 95% |
With disodium diselenide In N,N-dimethyl-formamide at 50℃; for 0.5h; | 88% |
Conditions | Yield |
---|---|
With disodium diselenide; tetrabutylammomium bromide In water for 0.05h; | 90% |
With potassium hydroxide; selenium; hydrazine hydrate In water at 60 - 70℃; | 89% |
With sodium hydroxide; selenium; hydrazine hydrate 1.) MeOH, 6 h; Multistep reaction; | |
With selenium; copper(II) oxide; potassium hydroxide In dimethyl sulfoxide at 90℃; Inert atmosphere; |
Conditions | Yield |
---|---|
With disodium diselenide; sodium hydrogen selenide; N,N-dimethyl-formamide In ethanol at 60 - 70℃; for 7h; | 90% |
1,2-bis(ethylseleno)-1-phenylethene
A
2,5-bis-phenylselenophene
B
diethyl diselenide
Conditions | Yield |
---|---|
at 180℃; for 25h; | A n/a B n/a C 81% D n/a |
n-butyl magnesium bromide
(Z)-1,2-bis(ethylseleno)ethene
A
diethyl diselenide
B
octane
C
cis-5-decene
Conditions | Yield |
---|---|
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In diethyl ether at 20℃; Further byproducts given; | A 145 mg B 226 mg C 78% D 42 mg |
Conditions | Yield |
---|---|
With bis(trimethylsilyl)selenide; boron trifluoride diethyl etherate In dichloromethane at 0℃; for 6h; | A 54% B n/a |
(chloromethyl)trimethoxysilane
A
diethyl diselenide
B
bis(trimethoxysilylmethyl) selenide
Conditions | Yield |
---|---|
In tetrahydrofuran for 1.5h; Heating; | A n/a B n/a C n/a D 35% |
bis-(1-bromo-vinyl) sulfoxide
divinyl selenide
A
diethyl diselenide
B
di<2-(vinylseleno)vinyl> sulfoxide
Conditions | Yield |
---|---|
With ammonia; sodium for 0.666667h; | A 20% B 12% |
Conditions | Yield |
---|---|
With disodium diselenide | |
With potassium diselenide |
Conditions | Yield |
---|---|
With aluminum selenide at 250 - 300℃; |
Conditions | Yield |
---|---|
With aluminum selenide at 250 - 300℃; |
Conditions | Yield |
---|---|
With air | |
With oxygen for 24h; |
Conditions | Yield |
---|---|
With potassium diselenide |
ethyl iodide
1-(2-Chloro-ethylsulfanyl)-propyne
A
diethyl diselenide
B
1-ethylsulfanyl-propyne
Conditions | Yield |
---|---|
With lithium selenide In ammonia |
Conditions | Yield |
---|---|
at 300 - 350℃; |
ethyl bromide
A
diethyl diselenide
B
diethyl-triselenide
C
diethyltrisulfane
Conditions | Yield |
---|---|
With sodium hydroxide; selenium; sulfur; hydrazine hydrate In water at 52 - 56℃; Further byproducts given; |
ethyl bromide
A
Diethyl disulfide
B
diethyl diselenide
C
diethyl sulphide
D
diethylselenium
Conditions | Yield |
---|---|
With sodium hydroxide; selenium; sulfur; hydrazine hydrate In water at 35℃; Product distribution; Further Variations:; Reagents; | A 29.7 % Chromat. B 36.2 % Chromat. C 2.2 % Chromat. D 5.5 % Chromat. |
ethyl bromide
A
Diethyl disulfide
B
diethyl diselenide
C
diethylselenium
D
ethyl ethylselenosulfenate
Conditions | Yield |
---|---|
With sodium hydroxide; selenium; sulfur; hydrazine hydrate In water at 35℃; Further byproducts given; | A 29.7 % Chromat. B 36.2 % Chromat. C 5.5 % Chromat. D 25.9 % Chromat. |
ethyl bromide
A
diethyl diselenide
B
diethyl telluride
C
diethyl ditelluride
Conditions | Yield |
---|---|
With sodium hydroxide; tellurium; sulfur; hydrazine hydrate In water at 35℃; Further byproducts given; | A 43.7 % Chromat. B 3.5 % Chromat. C 30.3 % Chromat. D 1.03 % Chromat. |
diethyl diselenide
Conditions | Yield |
---|---|
With potassium fluoride; copper(l) chloride In 1,4-dioxane at 110℃; for 24h; Inert atmosphere; stereospecific reaction; | 96% |
Conditions | Yield |
---|---|
In hexane at 20℃; for 1h; Inert atmosphere; | 95% |
Conditions | Yield |
---|---|
In hexane at 20℃; for 1h; Inert atmosphere; | 93% |
diethyl diselenide
1,3-di-tert-butyl-2,2-dimethyl-1,3,2,4-diazasilagermaetidine
Conditions | Yield |
---|---|
In hexane at 70℃; for 1h; | 92% |
diethyl diselenide
methyl 2-(phenylethynyl)benzoate
4-(ethylselanyl)-3-phenyl-1H-isochromen-1-one
Conditions | Yield |
---|---|
With Oxone In ethanol for 0.666667h; Sonication; regioselective reaction; | 90% |
With tetrabutylammonium tetrafluoroborate In acetonitrile at 20℃; for 0.0833333h; Electrochemical reaction; Green chemistry; | 89% |
Stage #1: diethyl diselenide With iron(III) chloride In dichloromethane at 20℃; for 0.333333h; Stage #2: methyl 2-(phenylethynyl)benzoate In dichloromethane at 20℃; for 18h; regioselective reaction; | 85% |
Conditions | Yield |
---|---|
With tri-n-butyl-tin hydride In various solvent(s) under 0.0750075 Torr; Reduction; | 89% |
With ethanol; sodium |
Conditions | Yield |
---|---|
In chloroform-d1 at 20℃; for 9h; Inert atmosphere; Irradiation; | 88% |
diethyl diselenide
25,27-bis(2-chloroethoxy)-26,28-dihydroxy-5,11,17,23-tetra(tert-butyl)calix[4]arene
Conditions | Yield |
---|---|
With sodium hydroxide; potassium borohydride; ethanol In tetrahydrofuran for 8h; Substitution; Heating; | 87% |
Conditions | Yield |
---|---|
Stage #1: diethyl diselenide With sulfuryl dichloride In dichloromethane at -196 - -20℃; for 0.5h; Stage #2: With antimonypentachloride In dichloromethane at -78℃; for 0.166667h; Stage #3: adamantylidene-adamantane In dichloromethane at -40 - 0℃; for 2h; | 87% |
diethyl diselenide
Conditions | Yield |
---|---|
Stage #1: diethyl diselenide With sodium tetrahydroborate In tetrahydrofuran at 0 - 20℃; for 1.25h; Inert atmosphere; Stage #2: 10-chloro-5,5-difluoro-3,7-dimethyl-5H-4λ4,5λ4-dipyrrolo[1,2-c:2',1'-f ][1,3,2]diazaborinine In tetrahydrofuran at 20℃; for 1h; Inert atmosphere; | 87% |
Conditions | Yield |
---|---|
With bis-[(trifluoroacetoxy)iodo]benzene In dichloromethane at 20℃; for 5h; regioselective reaction; | 83% |
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