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:3430-23-7
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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
Shanghai Seasonsgreen Chemical is a high-tech research and development, production, sale and custom synthesis set in one high-tech chemical products enterprises. Our sales and marketing division is located in Shanghai, serving international pharmaceu
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Cas:3430-23-7
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inquiryProduct Description Product website: http://www.finerchem.com/pro01en/id/1968.html Product Name 3,5-Dibromo-4-methylpyridine CAS No. 3430-23
Cas:3430-23-7
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inquiryWITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et
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inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after the dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available &diam
Cas:3430-23-7
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Cas:3430-23-7
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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
Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia
Appearance: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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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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inquiryMassive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and
Cas:3430-23-7
Min.Order:1 Gram
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inquiryOur company 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 and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O
Cas:3430-23-7
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryWe Huarong Pharm can provide Customized Synthesis & Process R&D & APIs and intermediates Production & Quality Research & Registration Application, especially our GMP validation service which complies with SFDA, FDA, WHO and EU EMPA. O
Hunan 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
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Cas:3430-23-7
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inquiryWuhu Nuovo Chemical Technology Co., Ltd. was established in August 2014, mainly engaged in the development, production and sales of ionic liquids, ribose, nucleosides, nucleotides and related chemicals; Products are mainly used in new energy, new ma
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:3430-23-7
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inquiryGood price, high purity, mature production technology, accept custom synthesis per customer's requirementsAppearance:white crystalline powder Package:As per Customer‘ requirements Application:Pharmaceutical intermediate
Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai
Cas:3430-23-7
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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
high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,Pharmaceutical intermediates Transportation:air,sea,courier
Cas:3430-23-7
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inquiryhigh qualityAppearance:white crystalline powder Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea
Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS
TAIHO Unique Advantages:1.We're factory2.Free samples available3.Commodity inspection can be done4.ISO9001,Kosher certifications5.10 years experiences Storage:Store in cool &dry place Package:aluminium foil bag/fiber can/plastic drum Application:comp
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
Cas:3430-23-7
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inquiryConditions | Yield |
---|---|
Stage #1: 3,5-dibromopyridine With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 0.5h; Stage #2: methyl iodide In tetrahydrofuran at -78 - 20℃; for 18h; | 66% |
Stage #1: 3,5-dibromopyridine With n-butyllithium; diisopropylamine In tetrahydrofuran; hexane at -78 - -10℃; for 0.5h; Stage #2: methyl iodide In tetrahydrofuran; hexane at -78℃; for 2h; | |
Stage #1: 3,5-dibromopyridine With lithium diisopropyl amide In tetrahydrofuran at -78℃; Stage #2: methyl iodide In tetrahydrofuran at -78℃; |
3,5-dibromopyridine
methyl iodide
A
3,5-dibromo-4-methyl-pyridine
B
3,5-dibromo-4-ethylpyridine
Conditions | Yield |
---|---|
With lithium diisopropyl amide 1.) THF, -78 deg C, 5 min; 2.) THF, -78 deg C, excess MeI; Yield given. Multistep reaction. Yields of byproduct given; |
Conditions | Yield |
---|---|
With lithium diisopropyl amide 1.) THF, -78 deg C, 5 min; 2.) -78 deg C, 2h; Yield given. Multistep reaction; |
Conditions | Yield |
---|---|
Stage #1: 3,5-dibromopyridine With n-butyllithium; diisopropylamine In tetrahydrofuran; hexane at -78 - -10℃; for 0.5h; Stage #2: methyl iodide In tetrahydrofuran; hexane at -78℃; for 2h; |
Conditions | Yield |
---|---|
Stage #1: 3,5-dibromo-4-methyl-pyridine With lithium hexamethyldisilazane In tetrahydrofuran at 0℃; for 1h; Inert atmosphere; Stage #2: carbonic acid dimethyl ester In tetrahydrofuran at 0℃; for 2h; Inert atmosphere; | 93% |
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate In 1,4-dioxane; water at 85℃; for 16h; Inert atmosphere; | 80% |
3,5-dibromo-4-methyl-pyridine
[3-(hydroxymethyl)phenyl]boronic acid
a-[3-(5-Bromo-4-methyl-pyridin-3-yl)-phenyl]-methanol
Conditions | Yield |
---|---|
79% |
3,5-dibromo-4-methyl-pyridine
N,N-dimethyl-formamide
5-bromo-4-methyl-pyridine-3-carbaldehyde
Conditions | Yield |
---|---|
Stage #1: 3,5-dibromo-4-methyl-pyridine With n-butyllithium In tetrahydrofuran; hexane at -100℃; for 0.0833333h; Stage #2: N,N-dimethyl-formamide In tetrahydrofuran; hexane at -100 - -78℃; for 1.33333h; Stage #3: With ammonium chloride In tetrahydrofuran; hexane; water Saturated solution; | 72% |
Stage #1: 3,5-dibromo-4-methyl-pyridine With n-butyllithium at -78℃; Stage #2: N,N-dimethyl-formamide Further stages.; |
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate In 1,4-dioxane; water at 80℃; for 16h; Inert atmosphere; | 71% |
Conditions | Yield |
---|---|
With palladium bis[bis(diphenylphosphino)ferrocene] dichloride; triethylamine In ethanol at 90℃; for 4h; Suzuki Coupling; Inert atmosphere; | 66% |
3,5-dibromo-4-methyl-pyridine
3,5-diiodo-4-methyl-pyridine
Conditions | Yield |
---|---|
With copper(l) iodide; potassium iodide; N,N`-dimethylethylenediamine In 1,4-dioxane at 130℃; for 16h; | 65% |
With copper(l) iodide; potassium iodide; N,N`-dimethylethylenediamine In 1,4-dioxane at 110℃; for 16h; Inert atmosphere; | |
With copper(l) iodide; sodium iodide; N,N`-dimethylethylenediamine In 1,4-dioxane Reflux; |
3,5-dibromo-4-methyl-pyridine
1-[4-(4,4,5,5-tetramethyl-[1 ,3,2]dioxaborolan-2-yl)phenyl]pyrrolidin-2-one
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate In 1,4-dioxane; water at 85℃; for 3h; Inert atmosphere; | 63% |
Conditions | Yield |
---|---|
Stage #1: 3,5-dibromo-4-methyl-pyridine With lithium hexamethyldisilazane In tetrahydrofuran at -78 - 0℃; for 1.16667h; Inert atmosphere; Stage #2: Ethyl isobutyrate In tetrahydrofuran at 20℃; for 2h; Inert atmosphere; | 63% |
3,5-dibromo-4-methyl-pyridine
carbon dioxide
5-bromo-4-methylpyridine-3-carboxylic acid
Conditions | Yield |
---|---|
Stage #1: 3,5-dibromo-4-methyl-pyridine With n-butyllithium In tetrahydrofuran; hexane at -78℃; for 1h; Inert atmosphere; Stage #2: carbon dioxide In tetrahydrofuran; hexane at -78 - 20℃; for 1h; | 53% |
Conditions | Yield |
---|---|
With copper In 1,4-dioxane at 100℃; for 5h; | 50% |
3,5-dibromo-4-methyl-pyridine
ethyl 2-cyanoacetate
5-bromo-4-methylnicotinonitrile
Conditions | Yield |
---|---|
With N,N,N,N,-tetramethylethylenediamine; palladium diacetate; sodium hydride; 1,2-bis-(diphenylphosphino)ethane; potassium iodide In N,N-dimethyl-formamide at 130℃; for 22h; Inert atmosphere; | 48% |
3,5-dibromo-4-methyl-pyridine
tert-butyl 4-[4-(4,4,5,5-tetramethyl[1,3,2]dioxaborolan-2-yl)phenyl]piperazine-1-carboxylate
Conditions | Yield |
---|---|
With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; sodium carbonate monohydrate In 1,4-dioxane; water at 85℃; Suzuki-Miyaura Coupling; | 47% |
3,5-dibromo-4-methyl-pyridine
4-methoxyphenylboronic acid
3-bromo-5-(4-methoxyphenyl)-4-methylpyridine
Conditions | Yield |
---|---|
With potassium carbonate; tetrakis(triphenylphosphine) palladium(0) In water; N,N-dimethyl-formamide at 80℃; for 4h; | 46% |
3,5-dibromo-4-methyl-pyridine
5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)quinoline
Conditions | Yield |
---|---|
With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; sodium carbonate In 1,4-dioxane; water at 100℃; for 2h; Inert atmosphere; | 41.2% |
3,5-dibromo-4-methyl-pyridine
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium acetate; potassium carbonate In 1,4-dioxane; water at 120℃; for 2h; Inert atmosphere; | 35% |
3,5-dibromo-4-methyl-pyridine
ethyl bromoacetate
ethyl 3-(3,5-dibromopyridin-4-yl)propanoate
Conditions | Yield |
---|---|
Stage #1: 3,5-dibromo-4-methyl-pyridine With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 0.5h; Stage #2: ethyl bromoacetate In tetrahydrofuran at -78℃; for 3h; | 33.5% |
Stage #1: 3,5-dibromo-4-methyl-pyridine With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 0.5h; Inert atmosphere; Stage #2: ethyl bromoacetate In tetrahydrofuran at -78℃; for 2.5h; Inert atmosphere; | 33% |
Stage #1: 3,5-dibromo-4-methyl-pyridine With lithium diisopropyl amide In tetrahydrofuran at -78 - -70℃; for 0.5h; Inert atmosphere; Stage #2: ethyl bromoacetate In tetrahydrofuran at -78℃; for 1.5h; Inert atmosphere; | 32% |
Stage #1: 3,5-dibromo-4-methyl-pyridine With lithium diisopropyl amide In tetrahydrofuran; hexane at -78 - -70℃; for 0.5h; Inert atmosphere; Stage #2: ethyl bromoacetate In tetrahydrofuran; hexane at -78℃; for 1.5h; Inert atmosphere; | 32% |
3,5-dibromo-4-methyl-pyridine
tetramethylstannane
3,4,5-trimethylpyridine
Conditions | Yield |
---|---|
With bis-triphenylphosphine-palladium(II) chloride In toluene for 18h; Heating; | 33% |
3,5-dibromo-4-methyl-pyridine
5-methylisoindolin-1-one
2-(5-bromo-4-methylpyridin-3-yl)-5-methylisoindolin-1-one
Conditions | Yield |
---|---|
With copper(l) iodide; potassium carbonate; N,N-dimethylethylenediamine In 1,4-dioxane at 100℃; for 15h; | 30% |
trimethyl(prop-1-ynyl)silane
3,5-dibromo-4-methyl-pyridine
3-bromo-4-methyl-5-(prop-1-ynyl)pyridine
Conditions | Yield |
---|---|
copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); tetrabutyl ammonium fluoride In tetrahydrofuran; toluene at 70℃; Inert atmosphere; | 16% |
Conditions | Yield |
---|---|
With n-butyllithium 1.) THF, -100 deg C, 4 min; 2.) 1 h, -78 deg C; Yield given. Multistep reaction; |
3,5-dibromo-4-methyl-pyridine
5-[3-[4-methoxymethyl-1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzoimidazol-2-yl]-1-(2-trimethylsilanyl-ethoxymethyl)-1H-pyrazolo[3,4-b]pyridin-5-yl]-4-methyl-pyridine-3-carbaldehyde
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: n-BuLi / -78 °C 2: 69 percent / Pd(PPh3)4 / 90 °C View Scheme |
3,5-dibromo-4-methyl-pyridine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: n-BuLi / -78 °C 2: 69 percent / Pd(PPh3)4 / 90 °C 3: 99 percent / NaBH4 View Scheme |
3,5-dibromo-4-methyl-pyridine
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: n-BuLi / -78 °C 2: 69 percent / Pd(PPh3)4 / 90 °C 3: 99 percent / NaBH4 4: 38 percent / aq. HCl / ethanol View Scheme |
3,5-dibromo-4-methyl-pyridine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: 33 percent / PdCl2(PPh3)2 / toluene / 18 h / Heating 2.1: LDA; HMPA / tetrahydrofuran / 0.5 h / -78 °C 2.2: 28 percent / HMPA / tetrahydrofuran / 3 h / -78 °C 3.1: TBAF / tetrahydrofuran / 6 h / 65 °C View Scheme |
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