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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inquiryOur Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con
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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
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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
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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
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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
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inquiry1.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
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Min.Order:1 Metric Ton
FOB Price: $1.5
Type:Trading Company
inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
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
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inquiryQ1: Are you a manufacturer Answer: Yes, we are factory founded on 2012.Q2: How to contact with us Click "contact supplier" And then send us message the product you interest in, you will get reply within 12 hours.Q3:Which kind of payment terms do you
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
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inquiry1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.
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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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inquiry(3,4-difluorophenyl)hydrazine Application:(3,4-difluorophenyl)hydrazine
3,4-DIFLUOROPHENYLHYDRAZINEAppearance: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
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inquiryR & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou
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inquiryStock 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
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:any port in China
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inquiryhigh 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:any port in China
Cas:161886-22-2
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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
Our mission is to provide high-quality and innovative products to our customers. By offering a broad range of products, custom synthesis and personalized services, Bide can help scientists speeding up their research in the chemical and pharmaceutical
1.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
Cas:161886-22-2
Min.Order:10 Milligram
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Type:Lab/Research institutions
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
Cas:161886-22-2
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Type:Trading Company
inquiryYinghao Pharm products include: leader molecule, heterocyclic compounds,chiral compounds, photoelectric materials, biochemical reagents etc. For example:benzene, pyrimidine, boricacid,pyridine, pyrazole, imidazole, pyrrole, fluorine and other derivat
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inquiryCerametek Materials (CMT) is your industrial and R&D supplier: 1. Semiconductor materials: Compounds of II, III, IV, V, VI groups such as Metal Sulfides, Selenides, Tellurides, Arsenide, Antimonide, Phosphide... 2. Advanced ceramic and crys
R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou
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inquiry3,4-difluoroaniline
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
Stage #1: 3,4-difluoroaniline With hydrogenchloride; sodium nitrite In water at 0℃; for 1.16667h; Stage #2: With tin(ll) chloride In water at 0℃; | 57.5% |
Stage #1: 3,4-difluoroaniline With hydrogenchloride In methanol Stage #2: With sodium nitrite In methanol; water at 0℃; for 0.333333h; Stage #3: With hydrogenchloride; tin(ll) chloride In methanol; water at 4℃; for 6h; Further stages.; | |
Stage #1: 3,4-difluoroaniline With hydrogen bromide; sodium nitrite In water at -10 - -5℃; for 1h; Inert atmosphere; Stage #2: With tin(ll) chloride In water at -10 - -5℃; for 2h; Inert atmosphere; | |
Stage #1: 3,4-difluoroaniline With hydrogenchloride; sodium nitrite In dichloromethane; water at 0 - 20℃; for 1.5h; Stage #2: With tin(ll) chloride In dichloromethane; water at 0℃; for 6h; |
Conditions | Yield |
---|---|
With sodium nitrite In hydrogenchloride; water | 57.4% |
3-formyl-6-methylchromone
3,4-difluorophenyl hydrazine
C17H12F2N2O2
Conditions | Yield |
---|---|
With acetic acid In ethanol at 40℃; for 1h; | 99% |
6,8-dimethyl-3-formylchromone
3,4-difluorophenyl hydrazine
C18H14F2N2O2
Conditions | Yield |
---|---|
With acetic acid In ethanol at 40℃; for 1h; | 99% |
6-fluorochromone-3-carboxaldehyde
3,4-difluorophenyl hydrazine
C16H9F3N2O2
Conditions | Yield |
---|---|
With acetic acid In ethanol at 40℃; for 1h; | 99% |
7-methyl-4-oxo-(4H)-1-benzopyran-3-carbaldehyde
3,4-difluorophenyl hydrazine
C17H12F2N2O2
Conditions | Yield |
---|---|
With acetic acid In ethanol at 40℃; for 1h; | 99% |
6-bromo-4-oxo-4H-chromene-3-carbaldehyde
3,4-difluorophenyl hydrazine
C16H9BrF2N2O2
Conditions | Yield |
---|---|
With acetic acid In ethanol at 40℃; for 1h; | 99% |
6,8-dichloro-3-formylchromone
3,4-difluorophenyl hydrazine
C16H8Cl2F2N2O2
Conditions | Yield |
---|---|
With acetic acid In ethanol at 40℃; for 1h; | 99% |
Conditions | Yield |
---|---|
With acetic acid In ethanol at 40℃; for 1h; | 99% |
6-Chloro-4-oxo-4H-chromene-3-carbaldehyde
3,4-difluorophenyl hydrazine
C16H9ClF2N2O2
Conditions | Yield |
---|---|
With acetic acid In ethanol at 40℃; for 1h; | 99% |
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
In ethanol at 90℃; for 8h; | 84% |
4-hydroxy-6-methyl-2-pyron
5-chlorosalicyclaldehyde
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
With eosin In acetonitrile at 20℃; Irradiation; | 80% |
With 6-methylamino-hexane-1,2,3,4,5-pentaol In ethanol; water Reflux; Green chemistry; | 76% |
3,3-dicyano-2-methoxy-acrylic acid ethyl ester
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
With triethylamine In ethanol | 79% |
2-Hydroxy-4-methoxybenzaldehyde
4-hydroxy-6-methyl-2-pyron
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
With eosin In acetonitrile at 20℃; Irradiation; | 76% |
With 6-methylamino-hexane-1,2,3,4,5-pentaol In ethanol; water Reflux; Green chemistry; | 72% |
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
In ethanol at 90℃; for 8h; | 75% |
4-hydroxy-6-methyl-2-pyron
salicylaldehyde
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
With eosin In acetonitrile at 20℃; Irradiation; | 73% |
With 6-methylamino-hexane-1,2,3,4,5-pentaol In ethanol; water Reflux; Green chemistry; | 70% |
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
With acetic acid In toluene at 120℃; for 24h; | 58% |
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
Stage #1: 3,4-difluorophenyl hydrazine With hydrogenchloride; sodium nitrite In water at 0℃; for 0.5h; Stage #2: 2-(2-fluorobenzenesulfonyl)ethyl acetate With sodium acetate In methanol; water for 2h; | 47.1% |
Conditions | Yield |
---|---|
With PPA for 2h; Heating; |
3,4-difluorophenyl hydrazine
C15H11F2N
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: polyphosphoric acid / 2 h / Heating 2: polyphosphoric acid / 2 h / Heating View Scheme |
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: polyphosphoric acid / 2 h / Heating 2: polyphosphoric acid / 2 h / Heating 3: 80 percent / n-BuLi / diethyl ether / -78 - 20 °C View Scheme |
3,4-difluorophenyl hydrazine
4,5-dibromo-2-(3,4-difluorophenyl)-2H-pyridazin-3-one
1-(pyridin-3-yl)propan-1-one
3,4-difluorophenyl hydrazine
C14H13F2N3
Conditions | Yield |
---|---|
In ethanol for 2h; Inert atmosphere; Reflux; |
Conditions | Yield |
---|---|
With trifluoroacetic acid In dichloromethane at 40℃; |
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: trifluoroacetic acid / dichloromethane / 40 °C 2: sodium tris(acetoxy)borohydride / 1,2-dichloro-ethane 3: tetrabutylammomium bromide; potassium hydroxide / tetrahydrofuran View Scheme |
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: trifluoroacetic acid / dichloromethane / 40 °C 2: sodium tris(acetoxy)borohydride / 1,2-dichloro-ethane 3: tetrabutylammomium bromide; potassium hydroxide / tetrahydrofuran 4: methanol; water; lithium hydroxide 5: dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / dichloromethane View Scheme |
3,4-difluorophenyl hydrazine
C8H7F2N
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: trifluoroacetic acid / dichloromethane / 40 °C 2: sodium tris(acetoxy)borohydride / 1,2-dichloro-ethane View Scheme |
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: trifluoroacetic acid / dichloromethane / 40 °C 2: sodium tris(acetoxy)borohydride / 1,2-dichloro-ethane 3: tetrabutylammomium bromide; potassium hydroxide / tetrahydrofuran 4: methanol; water; lithium hydroxide View Scheme |
3,4-difluorophenyl hydrazine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium acetate / ethanol / 130 °C / Microwave irradiation 2: trichlorophosphate / 3 h / 80 °C View Scheme |
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