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:59489-71-3
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inquiryWelcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our
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inquiryProduct Description Product website: http://www.finerchem.com Product Name 2-Amino-5-bromopyrazine CAS No. 5
Cas:59489-71-3
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inquiryManufacturer supply 2-Amino-5-bromopyrazine CAS 59489-71-3 with attractive price Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates
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Cas:59489-71-3
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inquiryOur advantages: 1, High quality with competitive price: 1) Standard:BP/USP/EP/Enterprise standard 2) All Purity≥99% 3) We are manufacturer and can provide high quality products with factory price. 2, Fast and safe delivery 1) Parcel can be sent
Cas:59489-71-3
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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
Cas:59489-71-3
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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:59489-71-3
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inquiryAdvantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&
Cas:59489-71-3
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inquiryProducts Name: 2-Amino-5-bromopyrazine CAS NO.: 59489-71-3 Structural formula: Molecular formula: C4H4BrN3 Molecular weight: 173.9987 Appearanc
We are leading fine chemicals supplier in China with ISO certificate, Our main business covers the fields below: 1.Noble Metal Catalysts (Pt.Pd...) 2.Organic Phosphine Ligands (Tert-butyl-phosphine.Cyclohexyl-phosphine...) 3.OLED
Cas:59489-71-3
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inquiry2-Amino-5-bromopyrazine CAS:59489-71-3 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic
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inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
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inquiryBest 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
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Cas:59489-71-3
Min.Order:1 Gram
FOB Price: $29.0
Type:Trading Company
inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
Cas:59489-71-3
Min.Order:1 Gram
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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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inquiryA 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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Min.Order:4 Kilogram
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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
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Min.Order:10 Gram
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inquiry2-Amino-5-bromopyrazineAppearance:White or Almost White crystalline powder Storage:Store in refrigerator Package:according to customers' requirements Application:Steroids injection For Body building Transportation:By air(EMS or EUB or FedEx or TNT ec
Competitive Price High Quality Fast Delivery custom-made Welcome to Henan Tianfu Chemical Co., Ltd. website. Our company engages in Sodium Tripolyphosphate (STPP) and Sodium Hexametabphosphate (SHMP) production; development of noble me
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inquiryProduct Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
Cas:59489-71-3
Min.Order:1 Kilogram
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inquiryWe product this chemical more than 10 years . We are very experience to export it to many countries, Our superior & stable quality , competitive price gain warm reception from our customers. Product Name:2-Amino-5-bromopyrazine CAS No:59489-7
GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,
Cas:59489-71-3
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inquiryProduct Name: 2-Amino-5-bromopyrazine Synonyms: 5-BROMOPYRAZINAMINE;5-BROMOPYRAZIN-2-AMINE;5-BROMO-PYRAZIN-2-YLAMINE;5-BROMO-2-PYRAZINAMINE;BUTTPARK 29\02-91;2-aimo-5-bromopyrazine;5-Bromo-2-aminopyrazine;2-AMINO-5-BROMOPYRAZINE: TECH.
Cas:59489-71-3
Min.Order:1 Gram
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Type:Lab/Research institutions
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Cas:59489-71-3
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiry2-amino-3,5-dibromopyrazine
5-amino-2-bromopyrazine
Conditions | Yield |
---|---|
With trifuran-2-yl-phosphane; palladium diacetate; triethylamine Reagent/catalyst; Solvent; regioselective reaction; | 97% |
2-Aminopyrazine
5-amino-2-bromopyrazine
Conditions | Yield |
---|---|
With N-Bromosuccinimide In acetonitrile at 20℃; for 3h; Reagent/catalyst; Solvent; | 89% |
With N-Bromosuccinimide In N,N-dimethyl-formamide at 0℃; | 88% |
With N-Bromosuccinimide In dichloromethane at 0℃; for 3.5h; | 81.5% |
2-Aminopyrazine
A
5-amino-2-bromopyrazine
B
2-amino-3,5-dibromopyrazine
Conditions | Yield |
---|---|
With N-Bromosuccinimide In acetonitrile at 100℃; for 0.0833333h; Solvent; Temperature; Microwave irradiation; | A 88% B 6% |
With N-Bromosuccinimide In dichloromethane at 0 - 5℃; for 2h; | A 62% B 12% |
With N-Bromosuccinimide In dichloromethane at 0℃; for 2h; | A 62% B 12% |
With pyridine; bromine In chloroform for 3h; Ambient temperature; 1.2 equivalent of bromine and pyridine; | A 36% B 10% |
2-amino-3,5-dibromopyrazine
A
2-Aminopyrazine
B
5-amino-2-bromopyrazine
Conditions | Yield |
---|---|
With palladium diacetate; 1,8-diazabicyclo[5.4.0]undec-7-ene; triphenylphosphine In dimethyl sulfoxide regioselective reaction; | A 10% B 87% |
2-Aminopyrazine
A
5-amino-2-bromopyrazine
B
3-bromo-pyrazine-2-amine
Conditions | Yield |
---|---|
With bromodioxane In 1,4-dioxane at 100℃; for 0.5h; Reagent/catalyst; Solvent; | A 48% B 6% |
2-Aminopyrazine
A
5-amino-2-bromopyrazine
B
3-bromo-pyrazine-2-amine
C
2-amino-3,5-dibromopyrazine
Conditions | Yield |
---|---|
With pyridine; bromine In chloroform for 3h; Ambient temperature; 1.1 equivalent bromine and pyridine; | A 35% B 0.5% C 7% |
3-amino-6-bromo-pyrazine-2-carboxylic acid
5-amino-2-bromopyrazine
Conditions | Yield |
---|---|
With tetralin |
5-amino-2-bromopyrazine
N,N-dimethyl-formamide dimethyl acetal
(E)-N’-(5-bromopyrazin-2-yl)-N,N-dimethylformamidine
Conditions | Yield |
---|---|
at 60℃; for 2h; | 100% |
In isopropyl alcohol at 80℃; for 4h; | 57% |
5-amino-2-bromopyrazine
Conditions | Yield |
---|---|
Stage #1: 5-amino-2-bromopyrazine; 3-methoxycyclobutane-1-carboxylic acid With pyridine In acetonitrile at 20℃; for 0.0833333h; Stage #2: With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In ethyl acetate; acetonitrile at 20℃; for 12h; | 100% |
5-amino-2-bromopyrazine
Cyclobutanecarbonyl chloride
Conditions | Yield |
---|---|
With pyridine at 0℃; for 0.25h; | 100% |
Conditions | Yield |
---|---|
With tris-(dibenzylideneacetone)dipalladium(0); N,N,N,N,-tetramethylethylenediamine; 4,5-bis(diphenylphos4,5-bis(diphenylphosphino)-9,9-dimethylxanthenephino)-9,9-dimethylxanthene at 100℃; for 2h; | 100% |
5-amino-2-bromopyrazine
4-methoxyphenylboronic acid
2-amino-5-(4'-methoxyphenyl)-1,4-pyrazine
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In N,N-dimethyl-formamide Suzuki-Miyaura Coupling; Reflux; | 99% |
With bis(benzonitrile)palladium(II) dichloride; sodium carbonate; 1,4-di(diphenylphosphino)-butane In ethanol; toluene for 24h; Heating; | 78% |
With sodium carbonate; dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2 In 1,4-dioxane; methanol; water for 7h; Reflux; | |
With palladium diacetate; potassium carbonate; triphenylphosphine In ethanol; toluene Suzuki-Miyaura Coupling; Inert atmosphere; Reflux; |
5-amino-2-bromopyrazine
acetyl chloride
N-(5-bromopyrazin-2-yl)acetamide
Conditions | Yield |
---|---|
With pyridine In dichloromethane for 1h; | 99% |
Conditions | Yield |
---|---|
With potassium carbonate; tetrakis(triphenylphosphine) palladium(0) In water; isopropyl alcohol at 150℃; for 0.166667h; microwave reactor; | 99% |
With bis-triphenylphosphine-palladium(II) chloride; sodium carbonate In ethanol; water; toluene at 105℃; for 5h; Inert atmosphere; | 92.8% |
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In 1,4-dioxane; water for 12h; Suzuki Coupling; Inert atmosphere; Reflux; regioselective reaction; | 74% |
With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; potassium carbonate In water; N,N-dimethyl-formamide; toluene at 87℃; Reagent/catalyst; Solvent; Time; Inert atmosphere; Large scale; | 1.82 kg |
With bis(benzonitrile)palladium(II) dichloride; [1,4-bis(diphenylphosphino)butane] palladium(ll) dichloride; sodium carbonate In ethanol; water; toluene Reflux; |
Conditions | Yield |
---|---|
With 1,3-bis[(diphenylphosphino)propane]dichloronickel(II) In 1,4-dioxane; toluene at 12 - 21℃; for 4h; Inert atmosphere; | 99% |
5-amino-2-bromopyrazine
cyclopropanecarboxylic acid chloride
Conditions | Yield |
---|---|
With pyridine at 0℃; for 15h; | 99% |
5-amino-2-bromopyrazine
pivaloyl chloride
N-(5-bromo-pyrazin-2-yl)-2,2-dimethylpropionamide
Conditions | Yield |
---|---|
With pyridine In ethanol; dichloromethane; water | 98.21% |
With pyridine In dichloromethane at 0 - 25℃; for 22.5h; | 82% |
With pyridine In dichloromethane at 0 - 25℃; for 22.5h; | 82% |
With pyridine In dichloromethane at 0 - 20℃; Inert atmosphere; | 82% |
5-amino-2-bromopyrazine
acetic anhydride
N-(5-bromopyrazin-2-yl)acetamide
Conditions | Yield |
---|---|
at 20℃; for 12h; | 98% |
Product distribution / selectivity; |
5-amino-2-bromopyrazine
2-isopropenyl-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; caesium carbonate In 1,4-dioxane; water at 80℃; for 12h; Inert atmosphere; | 97% |
5-amino-2-bromopyrazine
tert-butylisonitrile
benzaldehyde
C16H17BrN4
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In methanol at 20℃; for 2h; | 96% |
5-amino-2-bromopyrazine
tert-butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)piperidine-1-carboxylate
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In 1,4-dioxane; water at 90℃; for 16h; Suzuki Coupling; Inert atmosphere; Sealed tube; | 96% |
Conditions | Yield |
---|---|
With potassium carbonate In water; toluene at 90℃; for 0.5h; Suzuki-Miyaura Coupling; | 96% |
Conditions | Yield |
---|---|
With dicyclohexyl-(2',6'-dimethoxybiphenyl-2-yl)-phosphane; palladium diacetate; potassium carbonate In water; acetonitrile for 6h; Suzuki-Miyaura coupling; Reflux; | 95% |
5-amino-2-bromopyrazine
2-bromo-4,5-dimethoxybenzaldehyde
Benzyl isocyanide
N-benzyl-6-bromo-2-(2-bromo-4,5-dimethoxyphenyl)imidazo[1,2-a]pyrazin-3-amine
Conditions | Yield |
---|---|
With perchloric acid In methanol at 20℃; | 95% |
Conditions | Yield |
---|---|
With copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); 18-crown-6 ether In DMF (N,N-dimethyl-formamide) at 20℃; for 3.5h; Heating / reflux; | 94.4% |
With copper(l) iodide; 18-crown-6 ether; tetrakis(triphenylphosphine) palladium(0) In N,N-dimethyl-formamide for 2h; Heating; | 88% |
copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); 18-crown-6 ether In N,N-dimethyl-formamide at 200℃; for 1h; | 36% |
With copper(l) iodide; tetrakis(triphenylphosphine) palladium(0); 18-crown-6 ether In N,N-dimethyl-formamide at 20℃; Heating / reflux; |
Conditions | Yield |
---|---|
With copper(l) iodide; 18-crown-6 ether; tetrakis(triphenylphosphine) palladium(0) In DMF (N,N-dimethyl-formamide) at 20℃; for 3.5h; Heating / reflux; | 94.4% |
5-amino-2-bromopyrazine
sodium cyanide
copper(I) cyanide
2-amino-5-cyanopyrazine
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 120℃; | 93% |
In N,N-dimethyl-formamide at 120℃; | 93% |
In N,N-dimethyl-formamide at 120℃; | 93% |
5-amino-2-bromopyrazine
1,3-dimethyl-1H-pyrazole-4-carbaldehyde
(5-bromo-pyrazin-2-yl)-(1,3-dimethyl-1H-pyrazol-4-ylmethyl)amine
Conditions | Yield |
---|---|
In acetic acid | 93% |
In acetic acid | 93% |
With trimethylamine-borane; acetic acid In methanol at 20℃; | 93% |
Conditions | Yield |
---|---|
With sodium carbonate; tetrakis (triphenylphosphine) palladium (0) In 1,2-dimethoxyethane; ethanol; water for 0.75h; Heating / reflux; | 92.5% |
5-amino-2-bromopyrazine
cyclohexanylcarbonyl chloride
cyclohexanecarboxylic acid (5-bromo-pyrazin-2-yl)-amide
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 0℃; for 1h; | 92% |
Conditions | Yield |
---|---|
With copper(I) oxide; caesium carbonate In dimethyl sulfoxide at 110℃; for 48h; Sealed tube; | 92% |
5-amino-2-bromopyrazine
4-methoxycarbonylphenylboronic acid
methyl 4-(5-aminopyrazin-2-yl)benzoate
Conditions | Yield |
---|---|
Stage #1: 5-amino-2-bromopyrazine; 4-methoxycarbonylphenylboronic acid With potassium phosphate In 1,4-dioxane; water at 20℃; for 1h; Inert atmosphere; Stage #2: With bis-triphenylphosphine-palladium(II) chloride In 1,4-dioxane; water for 16h; Suzuki-Miyaura Coupling; Reflux; Inert atmosphere; | 91% |
Stage #1: 5-amino-2-bromopyrazine; 4-methoxycarbonylphenylboronic acid With potassium carbonate In 1,4-dioxane; water at 20℃; for 0.666667h; Inert atmosphere; Stage #2: With bis-triphenylphosphine-palladium(II) chloride In 1,4-dioxane; water for 4h; Suzuki Coupling; Reflux; | 57% |
With sodium carbonate; 1,1'-bis-(diphenylphosphino)ferrocene In 1,4-dioxane; water at 100℃; for 16h; | 50% |
With bis-triphenylphosphine-palladium(II) chloride; potassium phosphate In 1,4-dioxane; water at 20℃; for 16h; Suzuki Coupling; Inert atmosphere; Reflux; | |
With palladium diacetate; potassium carbonate; triphenylphosphine In ethanol; toluene Suzuki-Miyaura Coupling; Inert atmosphere; Reflux; |
5-amino-2-bromopyrazine
tert-Butyldimethyl(prop-2-ynyloxy)silane
2-amino-5-(3-(tert-butyldimethylsilyloxy)prop-1-ynyl)pyrazine
Conditions | Yield |
---|---|
With triethylamine; copper(l) iodide; tetrakis(triphenylphosphine) palladium(0) In N,N-dimethyl-formamide at 60℃; | 91% |
5-amino-2-bromopyrazine
(2-methyl-4-(N-methylsulfamoyl)phenyl)boronic acid
4-(5-aminopyrazin-2-yl)-N,3-dimethylbenzenesulfonamide
Conditions | Yield |
---|---|
With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; caesium carbonate In 1,4-dioxane at 100℃; for 3h; Schlenk technique; Inert atmosphere; | 91% |
5-amino-2-bromopyrazine
2-amino-3,5-dibromopyrazine
Conditions | Yield |
---|---|
With N-Bromosuccinimide In chloroform at 0 - 20℃; for 6.5h; Solvent; | 91% |
With N-Bromosuccinimide In dichloromethane |
5-amino-2-bromopyrazine
(4-((tert-butyldimethylsilyl)oxy)phenyl)boronic acid
5-(p-tert-butyldimethylsilyloxyphenyl)-2-amino-1,4-pyrazine
Conditions | Yield |
---|---|
With bis-triphenylphosphine-palladium(II) chloride; sodium carbonate In ethanol; water; toluene for 17h; Inert atmosphere; Reflux; | 90.2% |
With sodium carbonate; PdCl2(PPh2(CH2)4PPh2) In toluene for 24h; Suzuki reaction; Heating; | 72% |
With sodium carbonate; 1,4-di(diphenylphosphino)-butane; palladium dichloride In ethanol; water; toluene for 15h; Suzuki coupling; Reflux; Inert atmosphere; | |
With sodium carbonate; dichlorobis(triphenylphosphine)palladium[II] In ethanol; water; toluene | |
With bis-triphenylphosphine-palladium(II) chloride; sodium carbonate In ethanol; toluene at 80 - 150℃; Suzuki Coupling; |
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