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
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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
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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
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inquiryTriumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Business Custom Synthesis:
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inquiryWe 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
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inquiry1, High quality with competitive price:2, Fast and safe delivery3.Excellent pre-sales and after-sales service4. Well-trained and professional technologist and sales with rich experience in the field for 5-10 yearsAppearance:see detailed specification
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inquiryLower 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
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inquiryHunan chemfish Pharmaceutical co.,Ltd.located in Lugu High-tech industral park ,Hunan province . with its own R&D center and more than 10000㎡manufacture plant . Chemfish owns 40 reactors from 1000L to 8000L. With complete auxiliary equipment as: Frac
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inquiryOur own factory produces direct sales with absolute price advantage Application:Pharmaceutical industry Transportation:By sea Port:Shanghai/tianjin
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inquirySilane, [1, 4-phenylenebis (oxy)]bis[trimethyl- cas 2117-24-0Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
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inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
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inquiryGood Quality Package:1kg/bag Application:Medical or chemical Transportation:Air/Train/Sea Port:Shenzhen
factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
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inquiry1.Professional synthesis laboratory and production base. 2.Strong synthesis team and service team. 3.Professional data management system. 4.We provide the professional test date and product information ,ex. HNMR ,CNMR,FNMR, HPLC/G
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inquiryFor quick quotation, please send us the inquiry include CAS#, Structure, Chemical Name, quantity, purity, as well as any additional specifications you require, we will try to get back to you within 24 hours. Our Services Besides manufacturing,
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inquiryKnown for its best quality and competitve price, this chemicals we offered is widely appreciated by our customers. Prompt reaction, good quality and best service make us reliable and outstanding in this industry.Appearance:yellow to white solid or po
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inquiry1,4-bis(trimethylsiloxy)benzene 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. Port:Shanghai/S
With certain technical reserves, high quality, preferential price and excellent service Application:high-purity organosilicone products have been developed, covering almost all fields of new material
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inquiryphenyltellurotrimethylsilane
p-benzoquinone
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
In tetrahydrofuran at 20℃; for 0.5h; reductive silylation; | 100% |
hydroquinone
1,1,1,3,3,3-hexamethyl-disilazane
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
With 3-methyl-1-sulfonic acid imidazolium hydrogen sulfate at 20℃; for 0.0833333h; Neat (no solvent); | 98% |
With succinimide-N-sulfonic acid In acetonitrile at 20℃; for 0.0833333h; | 98% |
With 1,3-disulfonic acid imidazolium hydrogen sulfate In neat (no solvent) at 20℃; for 0.0666667h; Green chemistry; | 98% |
1,1,1,2,2,2-hexamethyldisilane
p-benzoquinone
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
With iodine In benzene at 61.9℃; for 7h; | 95% |
With iodine In benzene at 60℃; for 3h; | 99 % Chromat. |
N,N-Dimethylcarbamidsaeure-trimethylsilylester
hydroquinone
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
at 60℃; for 1h; | 94% |
Conditions | Yield |
---|---|
With 1,1,1,3,3,3-hexamethyl-disilazane In acetonitrile for 12h; | 91% |
With 1,8-diazabicyclo[5.4.0]undec-7-ene In dichloromethane for 0.5h; Ambient temperature; | 60% |
With pyridine |
chloro-trimethyl-silane
hydroquinone
1,1,1,3,3,3-hexamethyl-disilazane
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
In acetonitrile | 91% |
Conditions | Yield |
---|---|
With zinc In tetrahydrofuran for 0.5h; ultrasonic irradiation; | 90% |
With zinc In diethyl ether for 15h; Ambient temperature; | 77% |
(2-bromoallyl)trimethylsilane
p-benzoquinone
A
1,4-bis(trimethylsilyloxy)benzene
B
2-(2-Bromo-allyl)-1,4-bis-trimethylsilanyloxy-benzene
Conditions | Yield |
---|---|
With lithium perchlorate In diethyl ether | A 12.5% B 75% |
p-benzoquinone
allyl-trimethyl-silane
A
1,4-bis(trimethylsilyloxy)benzene
B
2-Allyl-1,4-bis-trimethylsilanyloxy-benzene
Conditions | Yield |
---|---|
With lithium perchlorate In diethyl ether at 40℃; for 15h; further reactions with quinones; | A 12% B 73% |
With lithium perchlorate In diethyl ether at 40℃; for 15h; | A 12% B 73% |
[(1-methoxyvinyl)oxy]trimethylsilane
p-benzoquinone
A
1,4-bis(trimethylsilyloxy)benzene
B
Homogentinsaeure-methylester Bis(trimethylsilyl)ether
Conditions | Yield |
---|---|
With lithium perchlorate In diethyl ether for 0.5h; Ambient temperature; | A 22% B 53% |
1-methoxy-2-methyl-1-trimethylsiloxy-1-propene
p-benzoquinone
A
1,4-bis(trimethylsilyloxy)benzene
B
3,3-Dimethyl-5-trimethylsilanyloxy-3H-benzofuran-2-one
Conditions | Yield |
---|---|
With lithium perchlorate In diethyl ether for 0.5h; Ambient temperature; | A 40% B 25% |
chloro-trimethyl-silane
disodium salt of hydroquinone
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
In dimethyl sulfoxide; benzene |
N,O-Bis(trimethylsilyl)trifluoroacetamide
hydroquinone
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
In acetonitrile for 0.5h; Ambient temperature; | |
With pyridine at 70℃; for 1h; |
tetrakis(trimethylsilyl)tetrazene
p-benzoquinone
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
In benzene at 80℃; for 72h; bomb tube; Yield given; |
hexamethyldisilathiane
4-hydroxy-1-phenyl-1-trimethylsilyl ether
1,4-bis(trimethylsilyloxy)benzene
diethoxy dimethylsilane
4-chlorophenoxytrimethylsilane
A
(CH3)3SiOC6H4Si(CH3)2(OC2H5)
B
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
With Na In toluene on boiling;; side reaction (rearrangement) to form me3SiOC6H4OSime3;; | |
With Na In toluene on boiling;; side reaction (rearrangement) to form me3SiOC6H4OSime3;; | |
With sodium In toluene on boiling;; side reaction (rearrangement) to form me3SiOC6H4OSime3;; |
Conditions | Yield |
---|---|
With pyridinium chlorochromate In dichloromethane at 25℃; for 2h; Mechanism; relative reaction rate; | 99% |
With quinolinium monofluorochromate(VI) In dichloromethane for 1h; Ambient temperature; | 98% |
With dioxochloro(trimethylsiloxy)chromate(VI) In dichloromethane for 0.333333h; Ambient temperature; | 97% |
Conditions | Yield |
---|---|
With methanol; 1,3-disulfonic acid imidazolium hydrogen sulfate at 20℃; for 0.0833333h; Green chemistry; | 98% |
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In acetonitrile at 50℃; for 5h; | 92% |
1-(hydroxymethyl)-2-pyrrolidinone
1,4-bis(trimethylsilyloxy)benzene
Conditions | Yield |
---|---|
With trifluorormethanesulfonic acid In acetonitrile for 48h; | A 10% B 24% |
1,4-bis(trimethylsilyloxy)benzene
chromium(0) hexacarbonyl
{((CH3)3SiO)2C6H4}Cr(CO)3
Conditions | Yield |
---|---|
In tetrahydrofuran under N2, refluxing a suspn. of Cr(CO)6 and ligand in (n-BuO)2O/THF (5:1), 1-3 days (with periodic return of sublimated Cr(CO)6 to react. mixture), reaction was stopped when sublimation ceased; vac. evapn., recrystn. (CH2Cl2-pentane), vac. drying; | 15% |
1,4-bis(trimethylsilyloxy)benzene
A
tetramethylsilane
B
trimethylsilyl iodide
C
Hexamethyldisiloxane
Conditions | Yield |
---|---|
With gallium(III) iodide at 200℃; for 4h; Decomposition; Further byproducts given; | A n/a B n/a C n/a D 22.5 % Turnov. |
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