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
Cas:34415-31-1
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inquiryAppearance:white or light yellow crystalline powder Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for research and industrial manufacture. Transportation:By
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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
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inquiry2,3,5-trichloro-4,6-difluoropyridineAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:pharmaceutical 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
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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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inquiryPrice, 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
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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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inquiryAopharm is specialized in APIs, pharmaceutical intermediates & fine chemicals. 1. The best quality, competitive price. 2. The best service before or after shipment. 3. Rich experience in export operation. 4. Rich experience in modes of
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inquirylow price Application:medical intermediate
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inquirySuperiority: 1. Quality: High purity, strict quality control, 10 years experience in chemical industry. 2. Price: Moderate price, more QTY more discount. 3. MOQ: Sample order is welcome to test quality. 4. Shipping time: In Stock, can be sh
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Debyesci is here who supplied several kinds of chemical products to global pharmaceutical, drug discovery, agrochemical and biotechnology industries for four yearsOur key scientific leadership team has gained experience in top research and developmen
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inquiryhigh purity Application:Drug intermediates Materials intermediates and active molecules
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inquiryPentafluoropyridine
3,5-dichloro-2,4,6-trifluoropyridine
A
4-chloro-2,3,5,6-tetrafluoropyridine
B
3,4-dichloro-2,5,6-trifluoropyridinev
C
2,6-difluoro-3,4,5-trichloropyridine
D
2,3-Dichloro-5-chlorodifluoropyridine
E
3-chloro-2,4,5,6-tetrafluoropyridine
Conditions | Yield |
---|---|
chromium(III) oxide at 520℃; | A 15 % Spectr. B 16 % Spectr. C 10 % Spectr. D 3 % Spectr. E 20 % Spectr. F 3 % Spectr. |
2,3,4,5,6-pentachloropyridine
A
2,3-Dichloro-5-chlorodifluoropyridine
B
3,5-dichloro-2,4,6-trifluoropyridine
C
2,3,5,6-tetrachloro-4-fluoropyridine
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide At 115-120 °C.; | |
In N,N-dimethyl-formamide At 115-120 °C.; |
2,3,4,5,6-pentachloropyridine
A
tetrachloro-monofluoropyridine
B
2,3-Dichloro-5-chlorodifluoropyridine
C
3,5-dichloro-2,4,6-trifluoropyridine
D
2,3,5,6-tetrachloro-4-fluoropyridine
Conditions | Yield |
---|---|
With tris(dimethylamino)sulfonium trimethylsilyldifluoride In tetrahydrofuran; tetrahydrofuran-d8 at 26℃; for 1h; Inert atmosphere; Glovebox; regioselective reaction; | A 11.5 %Spectr. B 38.2 %Spectr. C 5.3 %Spectr. D 45.1 %Spectr. |
2,3,4,5,6-pentachloropyridine
A
2,3-Dichloro-5-chlorodifluoropyridine
B
3,5-dichloro-2,4,6-trifluoropyridine
C
2,3,5,6-tetrachloro-4-fluoropyridine
Conditions | Yield |
---|---|
With tris(dimethylamino)sulfonium trimethylsilyldifluoride In tetrahydrofuran; tetrahydrofuran-d8 at 26℃; for 1h; Inert atmosphere; Glovebox; regioselective reaction; | A 51 %Spectr. B 31 %Spectr. C 16.2 %Spectr. |
2,3,4,5,6-pentachloropyridine
A
2,3-Dichloro-5-chlorodifluoropyridine
B
3,5-dichloro-2,4,6-trifluoropyridine
Conditions | Yield |
---|---|
With tris(dimethylamino)sulfonium trimethylsilyldifluoride In tetrahydrofuran; tetrahydrofuran-d8 at 26℃; for 1h; Inert atmosphere; Glovebox; regioselective reaction; | A 13.7 %Spectr. B 85.1 %Spectr. |
2,3,4,5,6-pentachloropyridine
A
tetrachloro-monofluoropyridine
B
2,3-Dichloro-5-chlorodifluoropyridine
C
2,3,5,6-tetrachloro-4-fluoropyridine
Conditions | Yield |
---|---|
With tris(dimethylamino)sulfonium trimethylsilyldifluoride In tetrahydrofuran; tetrahydrofuran-d8 at 26℃; for 1h; Inert atmosphere; Glovebox; regioselective reaction; | A 18.2 %Spectr. B 12.2 %Spectr. C 69.7 %Spectr. |
2,3-Dichloro-5-chlorodifluoropyridine
(R, S)-propyl 4-(2-hydroxyphenoxy)propanoate
Conditions | Yield |
---|---|
In butanone |
2,3-Dichloro-5-chlorodifluoropyridine
sodium hydride
4-NH2-2-OCH3-C5Cl3N
(2,3,5-trichloro-6-fluoro-pyridin-4-yl)-(2,3,5-trichloro-6-methoxy-pyridin-4-yl)-amine
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide 10 °C;; | |
In N,N-dimethyl-formamide 10 °C;; |
2,3-Dichloro-5-chlorodifluoropyridine
sodium hydride
4-NH2-2-OCH3-3,5-Cl2-C5FN
(3,5-dichloro-2-fluoro-6-methoxy-pyridin-4-yl)-(2,3,5-trichloro-6-fluoro-pyridin-4-yl)-amine
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide 10 °C;; | |
In N,N-dimethyl-formamide 10 °C;; |
2,3-Dichloro-5-chlorodifluoropyridine
benzyl alcohol
4-C6H5CH2O-2-F-3,5,6-Cl3C5N
Conditions | Yield |
---|---|
In 1,4-dioxane 20 °C (stirring), in presence of (C2H5)3N;; | |
In 1,4-dioxane 20 °C (stirring), in presence of (C2H5)3N;; |
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