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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

2,3-Diaminopyridine Manufacturer/High quality/Best price/In stock

Cas:452-58-4

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

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Henan Tianfu Chemical Co., Ltd.

Our company was built in 2009 with an ISO certificate.In the past 6 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

2,3-Diaminopyridine 452-58-4

Cas:452-58-4

Min.Order:1 Metric Ton

FOB Price: $500.0

Type:Lab/Research institutions

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Zhuozhou Wenxi import and Export Co., Ltd

WITH 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

Competitve Price in stock CAS 452-58-4 with best price

Cas:452-58-4

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

Type:Trading Company

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Hebei yanxi chemical co.,LTD.

hebei yanxi chemical co., LTD who registered capital of 10 million yuan, nearly to $2 million, we have a pharmaceutical raw materials factory production of pharmaceutical raw materials, and a reagent r&d center, and we do research and developmen

2,3-Diaminopyridine CAS NO.452-58-4

Cas:452-58-4

Min.Order:20 Kilogram

FOB Price: $10.0 / 100.0

Type:Trading Company

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Henan Sinotech Import&Export Corporation

Product Name: 2,3-Diaminopyridine Synonyms: 2,3-diamino-pyridin;Pyridine, 2,3-diamino-;PYRIDINE-2,3-DIAMINE;TIMTEC-BB SBB004339;ASINEX-REAG BAS 01435295;2,3-DIAMINOPYRIDINE;2,3-Diaminopyridine ,97%;3-DiaMin

2,3-Diaminopyridine CAS: 452-58-4

Cas:452-58-4

Min.Order:5 Metric Ton

FOB Price: $1.0 / 2.0

Type:Other

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Shanghai Upbio Tech Co.,Ltd

1.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

2,3-Diaminopyridine 452-58-4

Cas:452-58-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At presen

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Gram

FOB Price: $12.0 / 13.0

Type:Trading Company

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Qingdao Beluga Import and Export Co., LTD

2,3-Diaminopyridine CAS:452-58-4 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 interm

2,3-Diaminopyridine CAS:452-58-4

Cas:452-58-4

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Henan Wentao Chemical Product Co., Ltd.

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

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Xiamen Hisunny Chemical Co.,Ltd

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

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:0

Negotiable

Type:Manufacturers

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Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

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

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Ality Chemical Corporation

The 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

Factory Supply 2,3-Diaminopyridine

Cas:452-58-4

Min.Order:0 Metric Ton

Negotiable

Type:Other

inquiry

Shaanxi Cuicheng Biomedical Technology Co., Ltd.

Why Choose Us: 1. Factory direct sales, so we can provide the competitive price and high quality product base on 8 years of production and R&D experience. 2. It is available in stock for quick shipment.Products could be packaged according to cu

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Gram

Negotiable

Type:Other

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Chemlyte Solutions

Chemlyte Solutions believe that customers and suppliers deserve much more than what traditional distributors can offer. To grow in today s fast-paced and increasingly competitive market it is essential to be able to quickly adapt to market forces eff

Featured products 2,3-Diaminopyridine

Cas:452-58-4

Min.Order:100 Gram

Negotiable

Type:Other

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Shanghai Massive Chemical Technology Co., Ltd.

Massive 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

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Gram

FOB Price: $1.0

Type:Lab/Research institutions

inquiry

Zibo Hangyu Biotechnology Development Co., Ltd

Zibo 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:452-58-4

Cas:452-58-4

Min.Order:10 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Lingrui Chemical Co.,Ltd.

2,3-DiaminopyridineAppearance:Pls see the Details Storage:Keep away of light, hot, water, Store in dry, dark and ventilated place Package:according to customers' requirements Application:Steroids, Cosmetics Ingredients, APIs, Intermediates, OLED&Batt

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Gram

Negotiable

Type:Other

inquiry

Xiamen Jenny Chemical Technology Co., Ltd.

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,

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Milligram

Negotiable

Type:Trading Company

inquiry

Shanghai Minstar Chemical Co., Ltd

2,3-Diaminopyridine Chemical Properties Melting point 110-115 °C (lit.) Boiling point 195°C 55mm density 1.1118 (rough estimate) refractive index 1.5340 (estimate) Fp 205 °C storage temp. Refrigerator (+4°C) so

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Gram

FOB Price: $65.0

Type:Lab/Research institutions

inquiry

Siwei Development Group Ltd.

Product name: 2,3-Diaminopyridine CAS No.:452-58-4 Molecule Formula:C5H8N3 Molecule Weight:110.14 Purity: 99.0% Package: 25kg/drum Description:Brown powder Manufacture Standards:Enterprise Standard TESTING ITEMS

High Quality 2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Hangzhou Huarong Pharm Co., Ltd.

We 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

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:0

Negotiable

Type:Trading Company

inquiry

CHANGZHOU HANGYU PHARMACEUTICAL TECHNOLOGY CO., LTD

CHANGZHOU HANGYU PHARMACEUTICAL TECHNOLOGY CO., LTD. founded in 1984, engages in pharmaceutical research, development, production, process design and technical consultation of synthetic and fermentation pharmaceutical products. The

2,3-diaminopyridine 452-58-4 manufacturer/high quality

Cas:452-58-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Shandong Mopai Biotechnology Co., LTD

Shandong 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

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Zhongqi chem Co.,Ltd.

Located in Hangzhou National Hi-Tech Industrial Development Zone, zhongqichem is a technical company mainly focus on the Custom synthesis, manufacturing, sales of chemicals to various industries. Benefiting from the outstanding customer service and h

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:0

Negotiable

Type:Other

inquiry

Nanjing Yuance Industry&Trade Co., Ltd.

Excellent product quality with competitive price Fast delivery Prompt shipment Package:drum packing Application:452-58-4 Port:Shanghai, Nanjing

2,3-Diaminopyridine, pyridine-2,3-diyldiamine

Cas:452-58-4

Min.Order:1 Metric Ton

Negotiable

Type:Manufacturers

inquiry

Golden Pharma Co., Limited

GOLDEN 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

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:1 Kilogram

Negotiable

Type:Other

inquiry

Bluecrystal chem-union

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

2,3-Diaminopyridine

Cas:452-58-4

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthetic route

3,3'-dinitro-2,2'-hydrazobipyridine
101458-28-0

3,3'-dinitro-2,2'-hydrazobipyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With hydrogen; nickel In ethanol under 3102.9 Torr; for 3h; Ambient temperature;92%
2-amino-3-nitropyridine
4214-75-9

2-amino-3-nitropyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With sulfur; sodium hydroxide In methanol; water at 80℃; for 16h; Green chemistry;89%
With hydrogen; palladium on activated charcoal In ethyl acetate at 20 - 35℃; under 3102.9 Torr; other solvent;80%
With hydrogenchloride; ethanol; iron
2-Hydrazino-3-nitropyridine
15367-16-5

2-Hydrazino-3-nitropyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With hydrogen; nickel In tetrahydrofuran; ethanol at 65℃; under 3102.9 Torr; for 16h;70%
Multi-step reaction with 2 steps
1: 31 percent / (C2H5)3N / ethanol / 96 h / Heating
2: 92 percent / H2 / Raney Ni / ethanol / 3 h / 3102.9 Torr / Ambient temperature
View Scheme
2-amino-3-nitropyridine 1-oxide
385377-29-7

2-amino-3-nitropyridine 1-oxide

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With sulfur; sodium hydroxide In methanol; water at 80℃; for 16h; Green chemistry;68%
2-chloro-3-aminopyridine
6298-19-7

2-chloro-3-aminopyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With zinc ammonium chloride at 220℃; for 5h; Autoclave;60%
With ammonium hydroxide; copper(II) sulfate at 130℃; under 13239.1 Torr;
2-nitro-3-azidopyridine
28664-54-2

2-nitro-3-azidopyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With hydrazine hydrate In ethanol for 0.5h;50%
With hydrazine hydrate In ethanol for 0.5h; Mechanism;50%
benzyl N-(2-amino-6-chloropyridin-3-yl)carbamate

benzyl N-(2-amino-6-chloropyridin-3-yl)carbamate

A

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

B

6-chloropyridine-2,3-diamine
40851-95-4

6-chloropyridine-2,3-diamine

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen; sodium hydrogencarbonate In methanol at 20℃; under 760.051 Torr; for 2h; Sealed tube; Overall yield = 87 %Spectr.; chemoselective reaction;A 45%
B 42%
benzyl-(3-nitro-pyridin-2-yl)-amine
3723-70-4

benzyl-(3-nitro-pyridin-2-yl)-amine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In ethanol at 80℃; under 3102.9 Torr; for 18h;41%
2-amino-3-azidopyridine
928163-52-4

2-amino-3-azidopyridine

isobutyraldehyde
78-84-2

isobutyraldehyde

A

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

B

2-(1-methylethyl)imidazo[4,5-b]pyridine
21714-53-4

2-(1-methylethyl)imidazo[4,5-b]pyridine

Conditions
ConditionsYield
In ethanol for 24h; Heating;A 33%
B 8%
5-bromo-3-nitro-pyridin-2-ylamine
6945-68-2

5-bromo-3-nitro-pyridin-2-ylamine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With sulfuric acid; zinc In methanol; water at 90℃; for 48h;20%
With sodium hydroxide; aluminum nickel
pyridin-3-ylamine
462-08-8

pyridin-3-ylamine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With 4-methylisopropylbenzene; sodium amide at 210℃;
Multi-step reaction with 2 steps
1: concentrated aqueous HCl
2: CuSO4; aqueous NH3 / 130 °C / 13239.1 Torr
View Scheme
5-bromo-pyridine-2,3-diamine
38875-53-5

5-bromo-pyridine-2,3-diamine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With sodium hydroxide; Pd/SrCO3 Hydrogenation;
3-amino-2-nitropyridine
13269-19-7

3-amino-2-nitropyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With methanol; nickel Hydrogenation;
With sodium hydroxide; aluminum nickel
2-amino-3-nitropyridine
4214-75-9

2-amino-3-nitropyridine

A

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

B

6-chloropyridine-2,3-diamine
40851-95-4

6-chloropyridine-2,3-diamine

Conditions
ConditionsYield
With hydrogenchloride; tin
2-amino-5-chloro-3-nitropyridine
5409-39-2

2-amino-5-chloro-3-nitropyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With sodium hydroxide; aluminum nickel
pyridin-3-ylamine
462-08-8

pyridin-3-ylamine

4-methylisopropylbenzene
99-87-6

4-methylisopropylbenzene

sodium amide

sodium amide

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
at 210℃;
hydrogenchloride
7647-01-0

hydrogenchloride

2-amino-3-nitropyridine
4214-75-9

2-amino-3-nitropyridine

tin

tin

A

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

B

6-chloropyridine-2,3-diamine
40851-95-4

6-chloropyridine-2,3-diamine

3-amino-2-phthalimidopyridine
928163-50-2

3-amino-2-phthalimidopyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: HCl; sodium nitrite / H2O / 3.5 h / cooling
1.2: 60 percent / sodium azide / H2O; diethyl ether / 2 h / 0 °C
2.1: 96 percent / hydrazine hydrate / ethanol; tetrahydrofuran; H2O / 26 h / 20 °C
3.1: 33 percent / ethanol / 24 h / Heating
View Scheme
3-azido-2-phthalimidopyridine
928163-51-3

3-azido-2-phthalimidopyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 96 percent / hydrazine hydrate / ethanol; tetrahydrofuran; H2O / 26 h / 20 °C
2: 33 percent / ethanol / 24 h / Heating
View Scheme
3-nitro-2-phthalimidopyridine
928163-49-9

3-nitro-2-phthalimidopyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: 50 percent / hydrogen / Pd/C / ethanol / 15 h / 60 °C / 3040 Torr
2.1: HCl; sodium nitrite / H2O / 3.5 h / cooling
2.2: 60 percent / sodium azide / H2O; diethyl ether / 2 h / 0 °C
3.1: 96 percent / hydrazine hydrate / ethanol; tetrahydrofuran; H2O / 26 h / 20 °C
4.1: 33 percent / ethanol / 24 h / Heating
View Scheme
2-Chloro-3-nitropyridine
5470-18-8

2-Chloro-3-nitropyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 86 percent / ethanol / 3 h / Heating
2: 41 percent / H2 / 5percent Pd/C / ethanol / 18 h / 80 °C / 3102.9 Torr
View Scheme
Multi-step reaction with 2 steps
1: 65 percent / CH3COONH4 / bis-(2-methoxy-ethyl) ether / 12 h / Heating
2: 80 percent / H2 / 5percent Pd/C / ethyl acetate / 20 - 35 °C / 3102.9 Torr / other solvent
View Scheme
Multi-step reaction with 3 steps
1: 78 percent / N2H4 / acetonitrile / 1 h / Heating
2: 31 percent / (C2H5)3N / ethanol / 96 h / Heating
3: 92 percent / H2 / Raney Ni / ethanol / 3 h / 3102.9 Torr / Ambient temperature
View Scheme
Multi-step reaction with 2 steps
1: 78 percent / N2H4 / acetonitrile / 1 h / Heating
2: 70 percent / H2 / Raney Ni / ethanol; tetrahydrofuran / 16 h / 65 °C / 3102.9 Torr
View Scheme
Multi-step reaction with 2 steps
1: iron; acetic acid
2: CuSO4; aqueous NH3 / 130 °C / 13239.1 Torr
View Scheme
3-ethoxycarbonylaminopyridine
6276-11-5

3-ethoxycarbonylaminopyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: concentrated H2SO4; HNO3
2: aqueous NaOH
3: nickel-aluminium-alloy; aq.-ethanolic NaOH
View Scheme
ethyl N-(2-nitro-3-pyridyl)carbamate
55304-91-1

ethyl N-(2-nitro-3-pyridyl)carbamate

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: aqueous NaOH
2: nickel-aluminium-alloy; aq.-ethanolic NaOH
View Scheme
2-aminopyridine
504-29-0

2-aminopyridine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: N-Bromosuccinimide; ammonium acetate / acetonitrile / 0.25 h
2: nitric acid; sulfuric acid / 4 h / 0 - 50 °C
3: sulfuric acid; zinc / water; methanol / 48 h / 90 °C
View Scheme
5-bromo-2-pyridylamine
1072-97-5

5-bromo-2-pyridylamine

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: nitric acid; sulfuric acid / 4 h / 0 - 50 °C
2: sulfuric acid; zinc / water; methanol / 48 h / 90 °C
View Scheme
pyridine-2,3-dicarboxamide
4663-94-9

pyridine-2,3-dicarboxamide

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With sodium hypochlorite; potassium hydroxide In water at 5 - 100℃; for 5h; Reagent/catalyst;
2-nitro-aniline
88-74-4

2-nitro-aniline

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen In ethanol at 25℃; for 2h;
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

dimethylglyoxal
431-03-8

dimethylglyoxal

dimethyl-2,3 pyrido<2,3-b>pyrazine
7154-32-7

dimethyl-2,3 pyrido<2,3-b>pyrazine

Conditions
ConditionsYield
With zirconium(IV) chloride In methanol at 20℃; for 0.0833333h;100%
With silica-supported stannous chloride In methanol at 20℃; for 0.166667h;95%
With acetic acid In ethanol at 70℃; for 16h;95%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

4-benzoyl-3-hydroxy-2,5-dihydrofuran-2-one
7478-57-1

4-benzoyl-3-hydroxy-2,5-dihydrofuran-2-one

2-aminopyrido-3-ammonium 4-benzoyl-2(5H)-furanone-3-oxide
138196-75-5

2-aminopyrido-3-ammonium 4-benzoyl-2(5H)-furanone-3-oxide

Conditions
ConditionsYield
In chloroform Ambient temperature;100%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

(7aSR,9RS,11aRS)-11a-ethyl-9-hydroxy-9-propyl-6,7,7a,8,9,10,11,11a-octahydro-5H-dibenzo[a,c]cycloheptene-3-carboxylic acid

(7aSR,9RS,11aRS)-11a-ethyl-9-hydroxy-9-propyl-6,7,7a,8,9,10,11,11a-octahydro-5H-dibenzo[a,c]cycloheptene-3-carboxylic acid

(7aSR,9RS,11aRS)-11a-ethyl-9-hydroxy-9-propyl-6,7,7a,8,9,10,11,11a-octahydro-5H-dibenzo[a,c]cycloheptene-3-carboxylic acid (2-amino-pyridin-3-yl)-amide

(7aSR,9RS,11aRS)-11a-ethyl-9-hydroxy-9-propyl-6,7,7a,8,9,10,11,11a-octahydro-5H-dibenzo[a,c]cycloheptene-3-carboxylic acid (2-amino-pyridin-3-yl)-amide

Conditions
ConditionsYield
Stage #1: (7aSR,9RS,11aRS)-11a-ethyl-9-hydroxy-9-propyl-6,7,7a,8,9,10,11,11a-octahydro-5H-dibenzo[a,c]cycloheptene-3-carboxylic acid With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 0℃; for 0.166667h;
Stage #2: 2,3-Diaminopyridine In N,N-dimethyl-formamide at 20℃; for 18h;
100%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

nipecotic acid
498-95-3

nipecotic acid

C11H14N4

C11H14N4

Conditions
ConditionsYield
With polyphosphoric acid at 180℃; for 16h;100%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

3H-imidazo[4,5-b]pyridine
273-21-2

3H-imidazo[4,5-b]pyridine

Conditions
ConditionsYield
Stage #1: 2,3-Diaminopyridine; orthoformic acid triethyl ester at 145℃; for 3h;
Stage #2: With formic acid at 110℃; for 2h;
99%
Stage #1: 2,3-Diaminopyridine; orthoformic acid triethyl ester for 3.5h; Reflux;
Stage #2: With hydrogenchloride In water for 1h; Reflux;
83%
With H-Y-zeolite In ethanol for 10h; Heating;81%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

acenaphthene quinone
82-86-0

acenaphthene quinone

acenaphtho[1,2-b]pyrido[2,3-e]pyrazine
821773-03-9

acenaphtho[1,2-b]pyrido[2,3-e]pyrazine

Conditions
ConditionsYield
With zirconium oxide salicylaldehyde-(3-aminopropyl)trimethoxysilane imine complex modified SBA-15 In water for 2h; Reflux;99%
With Cu(II)-Schiff base/SBA-15 In water for 2h; Reflux;98%
With SBA-15 mesoporous silica supported Fe(III)-Schiff base In water for 2h; Reflux;98%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

formic acid
64-18-6

formic acid

3H-imidazo[4,5-b]pyridine
273-21-2

3H-imidazo[4,5-b]pyridine

Conditions
ConditionsYield
Stage #1: 2,3-Diaminopyridine With orthoformic acid triethyl ester at 145℃; for 3h;
Stage #2: formic acid at 110℃; for 2h;
Stage #3: In methanol at 20℃;
99%
at 170℃; for 48h;30%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

benzil
134-81-6

benzil

2,3-diphenylpyrido[3,2-b]pyrazine
1232-99-1

2,3-diphenylpyrido[3,2-b]pyrazine

Conditions
ConditionsYield
With silica-supported bismuth(III) chloride In methanol at 20℃; for 0.5h; Catalytic behavior;98%
In methanol; acetic acid at 160℃; for 0.0833333h; Irradiation;97%
With zirconium(IV) chloride In methanol at 20℃; for 1h;96%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

urea
57-13-6

urea

1,3-dihydro-imidazo[4,5-b]pyridin-2-one
16328-62-4

1,3-dihydro-imidazo[4,5-b]pyridin-2-one

Conditions
ConditionsYield
at 140℃; for 5h;98%
at 130 - 140℃;
carbon disulfide
75-15-0

carbon disulfide

2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

1,3-dihydro-2H-imidazo[4,5-b]pyridine-2-thione
29448-81-5

1,3-dihydro-2H-imidazo[4,5-b]pyridine-2-thione

Conditions
ConditionsYield
In pyridine for 5h; Heating;98%
With sodium hydroxide76%
With potassium hydroxide In ethanol; water at 80℃;69%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

6-methylnicotinic acid
3222-47-7

6-methylnicotinic acid

2-(6-Methyl-pyridin-3-yl)-1H-imidazo[4,5-b]pyridine
120623-51-0

2-(6-Methyl-pyridin-3-yl)-1H-imidazo[4,5-b]pyridine

Conditions
ConditionsYield
With PPA at 210℃; for 2h;98%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

4-methylnicotinic acid
3222-50-2

4-methylnicotinic acid

2-(4-Methyl-pyridin-3-yl)-1H-imidazo[4,5-b]pyridine
120623-49-6

2-(4-Methyl-pyridin-3-yl)-1H-imidazo[4,5-b]pyridine

Conditions
ConditionsYield
With PPA at 210℃; for 2h;98%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

carbon monoxide
201230-82-2

carbon monoxide

1,3-dihydro-imidazo[4,5-b]pyridin-2-one
16328-62-4

1,3-dihydro-imidazo[4,5-b]pyridin-2-one

Conditions
ConditionsYield
With selenium In tetrahydrofuran at 100℃; under 22800.7 Torr; for 20h;98%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

C11H12N2OS3
83431-64-5

C11H12N2OS3

(3H-Imidazo[4,5-b]pyridin-2-yl)-(6-methoxy-benzothiazol-2-yl)-amine
103588-24-5

(3H-Imidazo[4,5-b]pyridin-2-yl)-(6-methoxy-benzothiazol-2-yl)-amine

Conditions
ConditionsYield
In various solvent(s) Heating;98%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

valeric acid
109-52-4

valeric acid

2-n-butyl-imidazo<4,5-b>pyridine
68175-10-0

2-n-butyl-imidazo<4,5-b>pyridine

Conditions
ConditionsYield
With PPA for 3h; Heating;98%
With polyphosphoric acid at 100℃; for 5h;80%
With PPA at 100℃; for 5h;62%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

2-methyl-1H-imidazo[4,5-c]pyridine
63604-59-1

2-methyl-1H-imidazo[4,5-c]pyridine

2-(1H-Imidazo[4,5-c]pyridin-2-yl)-3H-imidazo[4,5-b]pyridine
63572-60-1

2-(1H-Imidazo[4,5-c]pyridin-2-yl)-3H-imidazo[4,5-b]pyridine

Conditions
ConditionsYield
With sulfur at 200 - 210℃; for 4h;98%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

phenylglyoxal hydrate
1074-12-0

phenylglyoxal hydrate

2-phenylpyrido[2,3-b]pyrazine

2-phenylpyrido[2,3-b]pyrazine

Conditions
ConditionsYield
With silica-supported bismuth(III) chloride In methanol at 20℃; for 0.166667h; Catalytic behavior; regioselective reaction;98%
With bismuth(lll) trifluoromethanesulfonate In water at 20℃; for 0.0833333h;92%
With (2,3,4,5,6-pentafluorophenyl)ammonium triflate In water at 20℃; for 1h; Green chemistry;92%
In ethanol Heating;77%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

2-methyl-benzyl alcohol
89-95-2

2-methyl-benzyl alcohol

N,N′-bis(salicyliden)-2,3-diaminopyridine
189822-35-3

N,N′-bis(salicyliden)-2,3-diaminopyridine

Conditions
ConditionsYield
for 0.0333333h; microwave irradiation;98%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

zinc(II) acetate dihydrate
5970-45-6

zinc(II) acetate dihydrate

salicylaldehyde
90-02-8

salicylaldehyde

[N,N′-bis(salicylidene)-2,3-diiminopyridine]zinc(II)
727375-59-9

[N,N′-bis(salicylidene)-2,3-diiminopyridine]zinc(II)

Conditions
ConditionsYield
In methanol at 70℃; for 4h;98%
In methanol under N2; salicylaldehyde in MeOH treated with Zn salt, mixt. stirred atroom temp., 2,3-diaminopyridine added, mixt. stirred; ppt. filtered off, washed with MeOH; elem. anal.;77%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

4-hexadecyloxy-2-hydroxybenzaldehyde

4-hexadecyloxy-2-hydroxybenzaldehyde

zinc(II) acetate dihydrate
5970-45-6

zinc(II) acetate dihydrate

[N,N-bis(4-hexadecyloxy-2-hydroxybenzylidene)-2,3-pyridinediaminato]zinc(II)
1352312-67-4

[N,N-bis(4-hexadecyloxy-2-hydroxybenzylidene)-2,3-pyridinediaminato]zinc(II)

Conditions
ConditionsYield
In ethanol under N2; to a soln. of 4-alcoxy-2-hydroxybenzaldehyde (1.00 mmol) in ethanol, diamine (0.500 mmol) was added under stirring; mixt. was heated at reflux with stirring for 1 h; Zn-contg. compd. (0.500 mmol) addn.; heating at reflux with stirring for 1 h; after cooling, the ppt was collected by filtration, washed with ethanol and dried; elem. anal.;98%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

oxalic acid diethyl ester
95-92-1

oxalic acid diethyl ester

NSC 91561
2067-84-7

NSC 91561

Conditions
ConditionsYield
at 100℃;98%
In water at 60℃; for 2h;81%
for 4h; Reflux;75%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Dimethyl N-(4-chloro-2-benzothiazolyl)-dithiocarbonimidate
83431-63-4

Dimethyl N-(4-chloro-2-benzothiazolyl)-dithiocarbonimidate

(4-Chloro-benzothiazol-2-yl)-(3H-imidazo[4,5-b]pyridin-2-yl)-amine
103588-25-6

(4-Chloro-benzothiazol-2-yl)-(3H-imidazo[4,5-b]pyridin-2-yl)-amine

Conditions
ConditionsYield
In various solvent(s) Heating;97%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

ethyl 2-cyanoacetate
105-56-6

ethyl 2-cyanoacetate

2-(3H-imidazo[4,5-b]pyridin-2-yl)acetonitrile
107932-97-8

2-(3H-imidazo[4,5-b]pyridin-2-yl)acetonitrile

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 110℃; Microwave irradiation;97%
at 180℃; for 2h;75%
at 110 - 115℃; for 14h; Neat (no solvent);70%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

trifluoroacetic acid
76-05-1

trifluoroacetic acid

2-Trifluoromethyl-3H-imidazo<4,5-b>pyridine
13797-63-2

2-Trifluoromethyl-3H-imidazo<4,5-b>pyridine

Conditions
ConditionsYield
for 48h; Heating;97%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

1,2-bis(4-methoxyphenyl)-1,2-ethanedione
1226-42-2

1,2-bis(4-methoxyphenyl)-1,2-ethanedione

2,3-bis(p-methoxyphenyl)pyrido<2,3-b>pyrazine

2,3-bis(p-methoxyphenyl)pyrido<2,3-b>pyrazine

Conditions
ConditionsYield
With acetic acid In ethanol Reflux;97%
With zirconium(IV) chloride In methanol at 20℃; for 4h;95%
With SBA-15 mesoporous silica supported Fe(III)-Schiff base In water for 2h; Reflux;95%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

Thiazole-4-carboxylic acid
3973-08-8

Thiazole-4-carboxylic acid

4-(1H-imidazo[4,5-b]pyridin-2-yl)thiazole
1848-82-4

4-(1H-imidazo[4,5-b]pyridin-2-yl)thiazole

Conditions
ConditionsYield
With PPA at 180℃; for 2h;97%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

di(2-azulenyl)ethanedione
476692-34-9

di(2-azulenyl)ethanedione

2,3-di(2-azulenyl)-5.azaquinoxaline
1145777-27-0

2,3-di(2-azulenyl)-5.azaquinoxaline

Conditions
ConditionsYield
In ethanol for 20h; Reflux;97%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

1,2-bis(4-fluorophenyl)ethane-1,2-dione
579-39-5

1,2-bis(4-fluorophenyl)ethane-1,2-dione

2,3-bis(4-fluorophenyl)pyrido[2,3-b]pyrazine
149159-43-3

2,3-bis(4-fluorophenyl)pyrido[2,3-b]pyrazine

Conditions
ConditionsYield
With SBA-15 mesoporous silica supported Fe(III)-Schiff base In water for 2h; Reflux;97%
With Cu(II)-Schiff base/SBA-15 In water for 2h; Reflux;96%
With zirconium oxide salicylaldehyde-(3-aminopropyl)trimethoxysilane imine complex modified SBA-15 In water for 2h; Reflux;96%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

5-chloroindole 2,3-dione
17630-76-1

5-chloroindole 2,3-dione

C13H7ClN4
1621885-01-5

C13H7ClN4

Conditions
ConditionsYield
In ethylene glycol at 80℃; for 0.2h; Microwave irradiation; Green chemistry; chemoselective reaction;97%
2,3-Diaminopyridine
452-58-4

2,3-Diaminopyridine

ethyl 2-cyanoacetate
105-56-6

ethyl 2-cyanoacetate

2-(1H-imidazo[4,5-b]pyridin-2-yl)acetonitrile

2-(1H-imidazo[4,5-b]pyridin-2-yl)acetonitrile

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 110℃; Microwave irradiation;97%

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