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
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inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W
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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
Henan 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
A substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
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inquiryThe above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
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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1-BROMO-2-BUTANONE Basic information Product Name: 1-BROMO-2-BUTANONE Synonyms: 1-Brombutanon-(2);1-bromo-2-butanon;1-bromo-butan-2-one;1-BroMo-2-butanone, 88% [stabilized], 88%;1-Bromo-2-butanone, technical, 85%, stabilized;(BROMOMETHYL)ETHYL
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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 a comprehensive enterprise, is located in High-Tech Science Park,Changsha,Chia . Specializing in R&D, manufacture and marketing, we provide a wide range of products and the most professional services to meet the
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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
1-Bromo-2-butanoneAppearance: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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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
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inquiryZhengzhou Kingorgchem Chemical Technology Co., Ltd. was founded on the basis of Organophosphorus Chemistry Lab of Institute of Chemistry Henan Academy of Sciences in 2015. The laboratory covers 600 m2 and the pilot plant covers 2000 m2. Kingorgchem i
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inquiryBetterbiochem 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
1-(trimethylsilyl)-2-butanone
1-Bromo-2-butanone
Conditions | Yield |
---|---|
With bromine In dichloromethane at -78℃; | 95% |
Conditions | Yield |
---|---|
Stage #1: 1-morpholinopropane-1-one; dimethyltitanocene In toluene at 65℃; Schlenk technique; Inert atmosphere; Stage #2: With bromine In toluene at -78℃; for 0.0333333h; Schlenk technique; Inert atmosphere; Stage #3: With water In toluene at 20℃; for 1h; Schlenk technique; Inert atmosphere; regioselective reaction; | 95% |
N-propionylpiperidine
dimethyltitanocene
A
1,1-dibromo-butan-2-one
B
1-Bromo-2-butanone
Conditions | Yield |
---|---|
Stage #1: N-propionylpiperidine; dimethyltitanocene In toluene at 65℃; Schlenk technique; Inert atmosphere; Stage #2: With bromine In toluene at -78℃; for 0.0333333h; Schlenk technique; Inert atmosphere; Stage #3: With water In toluene at 20℃; for 1h; Schlenk technique; Inert atmosphere; regioselective reaction; | A n/a B 94% |
1-pyrrolidin-1-yl-propan-1-one
dimethyltitanocene
A
1,1-dibromo-butan-2-one
B
1-Bromo-2-butanone
Conditions | Yield |
---|---|
Stage #1: 1-pyrrolidin-1-yl-propan-1-one; dimethyltitanocene In toluene at 65℃; Schlenk technique; Inert atmosphere; Stage #2: With bromine In toluene at -78℃; for 0.0333333h; Schlenk technique; Inert atmosphere; Stage #3: With water In toluene at 20℃; for 1h; Schlenk technique; Inert atmosphere; regioselective reaction; | A n/a B 93% |
Conditions | Yield |
---|---|
Stage #1: dimethyltitanocene; N,N-dipropylpropionamide In toluene at 65℃; Schlenk technique; Inert atmosphere; Stage #2: With bromine In toluene at -78℃; for 0.0333333h; Schlenk technique; Inert atmosphere; Stage #3: With water In toluene at 20℃; for 1h; Schlenk technique; Inert atmosphere; regioselective reaction; | 91% |
Conditions | Yield |
---|---|
Stage #1: dimethyltitanocene; N,N-diethylpropanamide In toluene at 65℃; Schlenk technique; Inert atmosphere; Stage #2: With bromine In toluene at -78℃; for 0.0333333h; Schlenk technique; Inert atmosphere; Stage #3: With water In toluene at 20℃; for 1h; Schlenk technique; Inert atmosphere; regioselective reaction; | 90% |
Conditions | Yield |
---|---|
Stage #1: dimethyltitanocene; N,N-dimethyl-propanamide In toluene at 65℃; Schlenk technique; Inert atmosphere; Stage #2: With bromine In toluene at -78℃; for 0.0333333h; Schlenk technique; Inert atmosphere; Stage #3: With water In toluene at 20℃; for 1h; Solvent; Temperature; Reagent/catalyst; Schlenk technique; Inert atmosphere; regioselective reaction; | 90% |
butanone
A
3,3-dibromobutan-2-one
B
1,1-dibromo-butan-2-one
C
1-Bromo-2-butanone
D
3-bromo-butanone
Conditions | Yield |
---|---|
With N-Bromosuccinimide; silica gel In methanol for 0.166667h; Reflux; | A n/a B n/a C 14% D 83% |
Conditions | Yield |
---|---|
With Oxone; ammonium bromide In methanol at 20℃; for 8h; regioselective reaction; | A 80% B 9% |
With 3-bromo-6-chloroimidazo<1,2-b>pyridazine hydrobromide-bromine for 0.5h; Ambient temperature; | A 19% B 58% |
With potassium chlorate; bromine at 50℃; |
Conditions | Yield |
---|---|
With N-bromo-N-sodiopolystyrenesulphonamide; sulfuric acid In chloroform for 8h; Heating; | 50% |
With bromine | |
With potassium chlorate; bromine |
dimethyltitanocene
N,N-dimethyl-propanamide
A
1,3-dibromobutan-2-one
B
1-Bromo-2-butanone
Conditions | Yield |
---|---|
Stage #1: dimethyltitanocene; N,N-dimethyl-propanamide With bromine at 70℃; for 2h; Stage #2: With water | A n/a B 35% |
Conditions | Yield |
---|---|
With diethyl ether beim folgenden Einleiten von HBr bei 0grad; |
Conditions | Yield |
---|---|
With hypobromous acid |
Conditions | Yield |
---|---|
With chromic acid | |
With potassium dichromate; sulfuric acid |
acetic acid
butanone
A
3-acetoxy-2-butanone
B
2-oxobutyl acetate
C
1-Bromo-2-butanone
D
3-bromo-butanone
Conditions | Yield |
---|---|
With bromine; sodium acetate In water Further byproducts given; |
butanone
A
3-acetoxy-2-butanone
B
2-oxobutyl acetate
C
1-Bromo-2-butanone
D
3-bromo-butanone
Conditions | Yield |
---|---|
With bromine; sodium acetate In water; acetic acid Further byproducts given; |
Conditions | Yield |
---|---|
With hydrogen bromide 1.) diethyl ether, 2.) diethyl ether; Multistep reaction; |
Conditions | Yield |
---|---|
With sodium bromide In N-methyl-acetamide |
iso-butanol
A
butanone
B
1-Bromo-2-butanone
C
3-bromo-butanone
Conditions | Yield |
---|---|
With sodium bromate; sulfuric acid; sodium bromide In water at 60℃; for 0.166667h; Microwave irradiation; |
3-chloropyrazin-2-amine
1-Bromo-2-butanone
8-chloro-2-ethylimidazo[1,2-a]pyrazine
Conditions | Yield |
---|---|
at 90℃; for 18h; | 100% |
With sodium carbonate In 1,4-dioxane; dimethylsulfoxide-d6; diethyl ether; water | 74% |
In tert-butyl alcohol Heating; | 44% |
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 20℃; for 3.75h; | 100% |
pyrrol-2-yl trichloromethyl ketone
1-Bromo-2-butanone
3-ethyl-1H-pyrrolo[2,1-c][1,4]oxazin-1-one
Conditions | Yield |
---|---|
With potassium carbonate In acetone at 20℃; for 19h; | 100% |
Conditions | Yield |
---|---|
With bromocyane; triethylamine In ethanol at 0 - 20℃; for 0.00138889h; Sealed tube; | 100% |
Conditions | Yield |
---|---|
With bromocyane; triethylamine In ethanol at 0 - 20℃; for 0.00138889h; Sealed tube; | 100% |
2-thio-1-(2',3',5'-tri-O-benzoyl-β-D-ribofuranosyl)-(3H)pyrimidine-2,4-dione
1-Bromo-2-butanone
2-(2-oxobutyl)thio-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)-4(1H)-pyrimidinone
Conditions | Yield |
---|---|
With triethylamine In dichloromethane for 1h; Ambient temperature; | 99% |
1-Bromo-2-butanone
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 20℃; for 12h; | 99% |
N-(Diphenylmethyl)glycine 1,1-dimethylethyl ester
1-Bromo-2-butanone
[benzhydryl-(2-oxobutyl)amino]acetic tert-butyl ester
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In acetone at -60℃; Heating / reflux; | 98% |
2-amino-5-chlorophenol
1-Bromo-2-butanone
Conditions | Yield |
---|---|
With potassium carbonate In acetone at 20℃; for 3h; Cooling with ice; | 98% |
5-chloro-6-(4-chlorophenylamino)nicotinamidine
1-Bromo-2-butanone
Conditions | Yield |
---|---|
With potassium hydrogencarbonate In tetrahydrofuran at 60 - 80℃; for 2h; | 97% |
Conditions | Yield |
---|---|
Stage #1: 2-nitro-5-trifluoromethylphenol With sodium hydride In N,N-dimethyl-formamide; mineral oil at 20℃; for 0.333333h; Inert atmosphere; Stage #2: 1-Bromo-2-butanone In N,N-dimethyl-formamide; mineral oil at 20℃; for 21.5h; Inert atmosphere; | 97% |
1-Bromo-2-butanone
Conditions | Yield |
---|---|
Stage #1: tert-butyl (2-bromo-4-methyl-6-nitrophenyl)carbamate With caesium carbonate In N,N-dimethyl-formamide at 20℃; for 0.0833333h; Stage #2: 1-Bromo-2-butanone In N,N-dimethyl-formamide; acetonitrile at 20℃; for 0.25h; | 97% |
triphenylphosphine
1-Bromo-2-butanone
2-oxobutyltriphenylphosphonium bromide
Conditions | Yield |
---|---|
In tetrahydrofuran for 4h; Reflux; | 96% |
In tetrahydrofuran for 3h; Cooling with ice; Reflux; | 95% |
1-Bromo-2-butanone
Conditions | Yield |
---|---|
With tetra-(n-butyl)ammonium iodide; potassium carbonate In N,N-dimethyl-formamide at 20℃; for 2h; Inert atmosphere; | 96% |
1-Bromo-2-butanone
Conditions | Yield |
---|---|
In acetonitrile for 2h; Reflux; | 96% |
1-Bromo-2-butanone
4-acetylamino-3-amino-benzoic acid t-butyl ester
4-acetylamino-3-(2'-oxobutyl)-aminobenzoic acid t-butyl ester
Conditions | Yield |
---|---|
With sodium hydrogencarbonate In N,N-dimethyl-formamide Ambient temperature; | 95% |
3-(4-nitrophenyl)propanethioamide
1-Bromo-2-butanone
4-ethyl-2-[2-(4-nitrophenyl)ethyl]-1,3-thiazole
Conditions | Yield |
---|---|
In tert-butyl alcohol for 0.5h; Heating / reflux; | 95% |
Methyl thioglycolate
1-Bromo-2-butanone
methyl 2-<(3-methylacetonyl)thio>acetate
Conditions | Yield |
---|---|
With sodium methylate In methanol a) room temperature, 25 min, b) 57 deg C, 25 min; | 94% |
sodium diethylmalonate
1-Bromo-2-butanone
<2-Oxo-butyl>-malonsaeure-diethylester
Conditions | Yield |
---|---|
In tetrahydrofuran Ambient temperature; | 94% |
1-Bromo-2-butanone
Conditions | Yield |
---|---|
With potassium carbonate In acetone at 20℃; for 16h; | 94% |
3-methoxy-2-methylpyridine
1-Bromo-2-butanone
3-Methoxy-2-methyl-1-(2-oxobutyl)-pyridinium Bromide
Conditions | Yield |
---|---|
at 70℃; for 0.166667h; | 93.8% |
4-thioureidobenzoic acid ethyl ester
1-Bromo-2-butanone
4-(4-ethylthiazol-2-ylamino)-benzoic acid ethyl ester
Conditions | Yield |
---|---|
In 1,4-dioxane at 110℃; for 0.25h; | 93% |
In 1,4-dioxane at 110℃; for 0.25h; Microwave irradiation; | 93% |
meta-iso-propyl aniline
1-Bromo-2-butanone
3-chloro-benzeneacetyl chloride
Conditions | Yield |
---|---|
With pyridine; N-ethyl-N,N-diisopropylamine In toluene | 93% |
1-Bromo-2-butanone
ethyl 3-benzyloxy-2-pyridineacetate
Ethyl (8-Benzyloxy-2-ethylindolizin-1-yl)carboxylate
Conditions | Yield |
---|---|
With sodium hydrogencarbonate In butanone for 24h; Heating; | 92% |
With sodium hydrogencarbonate In butanone | 92% |
With sodium hydrogencarbonate In butyraldehyde for 24h; Heating / reflux; | 92% |
With sodium hydrogencarbonate In butyraldehyde for 24h; Heating / reflux; | 92% |
1-Bromo-2-butanone
N-methoxy-N-methyl-2-(5-thioxo-1-trimethylsilanylmethyl-pyrrolidin-2-yl)-acetamide
N-methoxy-N-methyl-2-[5-(2-oxo-butylidene)-1-trimethylsilanylmethyl-pyrrolidin-2-yl]-acetamide
Conditions | Yield |
---|---|
Stage #1: 1-Bromo-2-butanone; N-methoxy-N-methyl-2-(5-thioxo-1-trimethylsilanylmethyl-pyrrolidin-2-yl)-acetamide In acetonitrile at 23℃; Stage #2: With triethylamine; triphenylphosphine In acetonitrile at 23℃; | 92% |
2-(5-methoxy-pyridin-2-yl)-1-(3,4,5-trimethoxyphenyl)ethanone
1-Bromo-2-butanone
Conditions | Yield |
---|---|
With sodium hydrogencarbonate In acetone for 20h; | 92% |
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