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:6921-22-8
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Cas:6921-22-8
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Cas:6921-22-8
Min.Order:5 Kiloliter
FOB Price: $1.2 / 5.0
Type:Manufacturers
inquiry2,3-Difluoronitrobenzene at competitive price and good quality 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
Cas:6921-22-8
Min.Order:1 Kilogram
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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
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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
J&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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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
Cas:6921-22-8
Min.Order:10 Gram
FOB Price: $100.0
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inquiryProduct name: 1,2-Difluoro-3-Nitrobenzene CAS No.:6921-22-8 Molecule Formula:C6H3F2NO2 Molecule Weight:159.09 Purity: 95% Package: 25kg/drum Description:White powder Manufacture Standards:Enterprise Standard TESTING ITEMS
Cas:6921-22-8
Min.Order:1 Kilogram
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inquiry2,3-Difluoronitrobenzene Basic information Product Name: 2,3-Difluoronitrobenzene Synonyms: 2,3-DIFLUORONITROBENZENE;1,2-difluoro-3-nitrobenzene;2,3-Difluoro-1-Nitrobenzene;Benzene, 1,2-difluoro-3-nitro- (7CI,8CI,9CI);2,3-Difluoronitrobenzene ,
Cas:6921-22-8
Min.Order:1 Kilogram
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inquiryZhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed
Cas:6921-22-8
Min.Order:1 Kilogram
FOB Price: $2.0
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inquiryAppearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea
High quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use
Cas:6921-22-8
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inquiryGOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation
Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:6921-22-8
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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
Cas:6921-22-8
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inquiryhigh 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
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
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
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Min.Order:1 bottle
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Type:Lab/Research institutions
inquiryhigh 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
Cangzhou Enke Pharma Tech Co.,ltd. is located in Cangzhou City, Hebei province ,where is a famous petroleum chemical industry city?in China. Enke Pharma a high-tech enterprise ,and we are dedicated to developing and manufacturing new api,?intermediat
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
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Type:Lab/Research institutions
inquiry★.Best quality according to requirement ★.Competitive price in China market ★.Mature Technical support ★.Professional logistic support
Cas:6921-22-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry2,3-Difluoronitrobenzene cas 6921-22-8Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
Best quality with low price Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai
Cas:6921-22-8
Min.Order:0
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Type:Lab/Research institutions
inquiryfactory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin
Cas:6921-22-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
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Min.Order:0
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Type:Lab/Research institutions
inquiry6921-22-8 Application:intermediate
Cas:6921-22-8
Min.Order:0
Negotiable
Type:Lab/Research institutions
inquiry*stable and better quality products*efficient and meticulous servicesAppearance:Powder Storage:Store in dry, cool and ventilated place Package:10G/bottle 1kg/tin 5kg/tin 25kg/carton Application:1. Chemical raw materials 2. Used as an analytical reage
Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Conditions | Yield |
---|---|
With dihydrogen peroxide; trifluoroacetic anhydride In dichloromethane; water at 0 - 20℃; | 57% |
Stage #1: 2,3-difluoroanilline With tetrafluoroboric acid; sodium nitrite In water at 0℃; for 1.33333h; Stage #2: With copper In water for 1.33333h; | 25% |
triethylsilane
2,3,4-trifluoronitrobenzene
A
triethylsilyl fluoride
B
1,2-difluoro-3-nitrobenzene
Conditions | Yield |
---|---|
With dmap; (1,3-bis(2,4,6-trimethylphenyl)imidazolin-2-ylidene)AuH In dichloromethane at 40℃; for 12h; Inert atmosphere; | A n/a B 53% |
Conditions | Yield |
---|---|
With 4,5-bis-(di-tert-butyl-phosphanyl)-9,9-dimethyl-9H-xanthene; [t-BuXantphosAu]+[Cl-Au-Cl]-; diphenylsilane; acetic acid In 1,2-dichloro-ethane at 80℃; for 24h; Inert atmosphere; | 12 %Spectr. |
2,3,4-trifluoronitrobenzene
A
3,4-difluoronitrobenzene
B
1,2-difluoro-3-nitrobenzene
C
2,3,4-trifluoroaniline
Conditions | Yield |
---|---|
With Dimethylphenylsilane; o-phenylenebis(diphenylphosphine); potassium tert-butylate; copper(l) chloride In tetrahydrofuran for 12h; Inert atmosphere; Reflux; Overall yield = 95 %Spectr.; regioselective reaction; |
1,2-difluoro-3-nitrobenzene
methylamine
2-fluoro-N-methyl-6-nitroaniline
Conditions | Yield |
---|---|
With potassium carbonate In 1,4-dioxane; ethanol at 20℃; Inert atmosphere; | 100% |
With lithium aluminium tetrahydride In methanol; ethanol at 70℃; for 0.75h; Inert atmosphere; Sealed tube; UV-irradiation; | 100% |
In methanol; ethanol at 70℃; for 0.5h; Microwave heating; |
1,2-difluoro-3-nitrobenzene
phenylmethanethiol
2-(benzylsulfanyl)-1-fluoro-3-nitrobenzene
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 2h; regioselective reaction; | 99% |
tert-butyl N-methyl-N-(piperidin-4-ylmethyl)carbamate
1,2-difluoro-3-nitrobenzene
tert-butyl (1-(2-fluoro-6-nitrophenyl)piperidin-4-yl)methyl(methyl)carbamate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In acetonitrile at 80℃; for 18h; | 99% |
1,2-difluoro-3-nitrobenzene
ethanolamine
2-[(2-fluoro-6-nitrophenyl)amino]ethanol
Conditions | Yield |
---|---|
In ethanol at 20℃; | 97% |
isonipecotic acid methyl ester
1,2-difluoro-3-nitrobenzene
methyl 1-(2-fluoro-6-nitrophenyl)piperidine-4-carboxylate
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In acetonitrile at 80℃; | 97% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 65℃; | 90% |
1,2-difluoro-3-nitrobenzene
methyl 3-aminopropanoate hydrochloride
3-(2-fluoro-6-nitrophenylamino)propionic acid methyl ester
Conditions | Yield |
---|---|
With potassium fluoride; 18-crown-6 ether; N-ethyl-N,N-diisopropylamine In acetonitrile for 2h; Heating / reflux; | 86% |
Conditions | Yield |
---|---|
With NaH; ammonium chloride; trifluoroacetic acid In dichloromethane; N,N-dimethyl-formamide | A 85% B n/a |
1,2-difluoro-3-nitrobenzene
Cyclopropylamine
N-cyclopropyl-2-fluoro-6-nitroaniline
Conditions | Yield |
---|---|
In ethanol at 20℃; for 16h; Inert atmosphere; | 81% |
1,2-difluoro-3-nitrobenzene
4-benzyloxyphenylhydrazide
Conditions | Yield |
---|---|
In dimethyl sulfoxide at 100℃; for 10h; | 81% |
1,2-difluoro-3-nitrobenzene
glycine ethyl ester hydrochloride
(2-fluoro-6-nitrophenylamino)acetic acid ethyl ester
Conditions | Yield |
---|---|
With potassium fluoride; 18-crown-6 ether; N-ethyl-N,N-diisopropylamine In acetonitrile for 3h; Heating / reflux; | 73% |
(R)-piperidin-3-ylcarbamic acid tert-butyl ester
1,2-difluoro-3-nitrobenzene
C16H22FN3O4
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In acetonitrile at 80℃; | 72% |
Conditions | Yield |
---|---|
Stage #1: (S)-N-(tert-butoxycarbonyl)serine With sodium hydride In N,N-dimethyl-formamide; mineral oil at 0℃; for 1.16667h; Stage #2: 1,2-difluoro-3-nitrobenzene In N,N-dimethyl-formamide; mineral oil at 0℃; for 2h; | 68% |
1,2-difluoro-3-nitrobenzene
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In acetonitrile at 80℃; for 12h; | 59% |
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 80℃; for 16h; | 56.9% |
1,2-difluoro-3-nitrobenzene
Conditions | Yield |
---|---|
Stage #1: 1,2-difluoro-3-nitrobenzene With sulfuric acid; silver sulfate at 20℃; for 0.0833333h; Stage #2: With bromine at 20℃; for 16h; | 55% |
With N-Bromosuccinimide; sulfuric acid at 60℃; for 6h; | 34.51% |
1,2-difluoro-3-nitrobenzene
malonic acid dimethyl ester
2-(2-fluoro-6-nitrophenyl)malonic acid dimethyl ester
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 65℃; for 24h; | 43% |
With potassium carbonate In N,N-dimethyl-formamide at 65℃; for 24h; | 43% |
1,2-difluoro-3-nitrobenzene
aniline
(2-fluoro-6-nitrophenyl)phenylamine
Conditions | Yield |
---|---|
With caesium carbonate In dimethyl sulfoxide at 20 - 90℃; for 7h; | 39% |
1,2-difluoro-3-nitrobenzene
methyl 5-amino-2-pyridinecarboxylate
Conditions | Yield |
---|---|
With caesium carbonate In dimethyl sulfoxide at 18 - 25℃; for 5h; | 27% |
1,2-difluoro-3-nitrobenzene
guanidine nitrate
5-fluoro-1,2,4-benzotriazine-3-amine 1-oxide
Conditions | Yield |
---|---|
With potassium tert-butylate 1.) THF, 60 deg C, 6 h, 2.) THF, 2 h; Yield given. Multistep reaction; |
formaldehyd
Glyoxal
1,2-difluoro-3-nitrobenzene
2-chloro-4,4-difluoro-4,5-dihydrospiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]
3-methyl-1H-pyrazole-4-carbaldehyde
2-chloro-4,4-difluoro-1'-[[1-(2-fluoro-6-imidazol-1-yl-phenyl)-3-methyl-pyrazol-4-yl]methyl]spiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]
Conditions | Yield |
---|---|
Stage #1: 1,2-difluoro-3-nitrobenzene; 3-methyl-1H-pyrazole-4-carbaldehyde With potassium carbonate In acetonitrile at 20℃; Stage #2: 2-chloro-4,4-difluoro-4,5-dihydrospiro[5H-thieno[2,3-c]pyran-7,4'-piperidine] In dichloromethane at 20℃; for 0.5h; Stage #3: formaldehyd; Glyoxal |
1,2-difluoro-3-nitrobenzene
3-methyl-1H-pyrazole-4-carbaldehyde
methyl chloroformate
methyl iodide
A
methyl N-[3-fluoro-2-(4-formyl-3-methyl-pyrazol-1-yl)phenyl]-N-methyl-carbamate
Conditions | Yield |
---|---|
Stage #1: 1,2-difluoro-3-nitrobenzene; 3-methyl-1H-pyrazole-4-carbaldehyde With potassium carbonate In acetonitrile at 20℃; Stage #2: With iron; acetic acid In ethanol; water at 90℃; for 2h; Stage #3: methyl chloroformate; methyl iodide |
1,2-difluoro-3-nitrobenzene
2-chloro-4,4-difluoro-4,5-dihydrospiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]
3-methyl-1H-pyrazole-4-carbaldehyde
methyl chloroformate
methyl iodide
methyl N-[2-[4-[(2-chloro-4,4-difluoro-spiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]-1'-yl)methyl]-3-methyl-pyrazol-1-yl]-3-fluoro-phenyl]-N-methyl-carbamate
Conditions | Yield |
---|---|
Stage #1: 1,2-difluoro-3-nitrobenzene; 3-methyl-1H-pyrazole-4-carbaldehyde With potassium carbonate In acetonitrile at 20℃; Stage #2: With iron; acetic acid In ethanol; water at 90℃; for 2h; Stage #3: 2-chloro-4,4-difluoro-4,5-dihydrospiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]; methyl chloroformate; methyl iodide |
1,2-difluoro-3-nitrobenzene
3-methyl-1H-pyrazole-4-carbaldehyde
methyl chloroformate
methyl N-[3-fluoro-2-(4-formyl-3-methyl-pyrazol-1-yl)phenyl]carbamate
Conditions | Yield |
---|---|
Stage #1: 1,2-difluoro-3-nitrobenzene; 3-methyl-1H-pyrazole-4-carbaldehyde With potassium carbonate In acetonitrile at 20℃; Stage #2: With iron; acetic acid In ethanol; water at 90℃; for 2h; Stage #3: methyl chloroformate With pyridine In dichloromethane at 0 - 20℃; for 0.5h; |
1,2-difluoro-3-nitrobenzene
3-methyl-1H-pyrazole-4-carbaldehyde
B
1-(2-amino-6-fluoro-phenyl)-3-methyl-1H-pyrazole-4-carbaldehyde
Conditions | Yield |
---|---|
Stage #1: 1,2-difluoro-3-nitrobenzene; 3-methyl-1H-pyrazole-4-carbaldehyde With potassium carbonate In acetonitrile at 20℃; Stage #2: With iron; acetic acid In ethanol; water at 90℃; for 2h; |
1,2-difluoro-3-nitrobenzene
3-methyl-1H-pyrazole-4-carbaldehyde
B
1-(2-fluoro-6-nitro-phenyl)-3-methyl-1H-pyrazole-4-carbaldehyde
Conditions | Yield |
---|---|
With potassium carbonate In acetonitrile at 20℃; |
1,2-difluoro-3-nitrobenzene
2-chloro-4,4-difluoro-4,5-dihydrospiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]
3-methyl-1H-pyrazole-4-carbaldehyde
A
2-chloro-4,4-difluoro-1'-[[1-(2-fluoro-6-nitro-phenyl)-3-methyl-pyrazol-4-yl]methyl]spiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]
Conditions | Yield |
---|---|
Stage #1: 1,2-difluoro-3-nitrobenzene; 3-methyl-1H-pyrazole-4-carbaldehyde With potassium carbonate In acetonitrile at 20℃; Stage #2: 2-chloro-4,4-difluoro-4,5-dihydrospiro[5H-thieno[2,3-c]pyran-7,4'-piperidine] In dichloromethane at 20℃; for 0.5h; Stage #3: With sodium tris(acetoxy)borohydride In dichloromethane at 20℃; |
1,2-difluoro-3-nitrobenzene
2-chloro-4,4-difluoro-4,5-dihydrospiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]
3-methyl-1H-pyrazole-4-carbaldehyde
B
2-[4-[(2-chloro-4,4-difluoro-spiro[5H-thieno[2,3-c]pyran-7,4'-piperidine]-1'-yl)methyl]-3-methyl-pyrazol-1-yl]-3-fluoro-aniline
Conditions | Yield |
---|---|
Stage #1: 1,2-difluoro-3-nitrobenzene; 3-methyl-1H-pyrazole-4-carbaldehyde With potassium carbonate In acetonitrile at 20℃; Stage #2: 2-chloro-4,4-difluoro-4,5-dihydrospiro[5H-thieno[2,3-c]pyran-7,4'-piperidine] In dichloromethane at 20℃; for 0.5h; |
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