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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-Diaminobenzoic acid Manufacturer/High quality/Best price/In stock

Cas:603-81-6

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome 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

High quality 2,3-Diaminobenzoic Acid with high purity

Cas:603-81-6

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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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

3-Aminoanthranilic acid

Cas:603-81-6

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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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

New StandardCAS 603-81-6 with fast shipping

Cas:603-81-6

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

Type:Trading Company

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Henan Sinotech Import&Export Corporation

Name: 2,3-Diaminobenzoic acid Synonyms: 3-carboxy-1,2-diaminobenzen CAS: 603-81-6 MF: C7H8N2O2 Appearance:White powder Storage:Store in cool and dry place, away from sun light. Package:25kg/drum Application: APIs Transportation:By sea or by air Po

2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:1 Kilogram

FOB Price: $1.0

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

Benzoic acid,2,3-diamino- 603-81-6

Cas:603-81-6

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Qingdao Beluga Import and Export Co., LTD

2,3-Diaminobenzoic acid CAS:603-81-6 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 in

2,3-Diaminobenzoic acid CAS:603-81-6

Cas:603-81-6

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Shandong Hanjiang Chemical Co., Ltd.

Hello, 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

Benzoic acid,2,3-diamino-

Cas:603-81-6

Min.Order:1 Kilogram

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

CAS NO.:603-81-6

Cas:603-81-6

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-Diaminobenzoic Acid

Cas:603-81-6

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-Diaminobenzoic acid

Cas:603-81-6

Min.Order:0 Metric Ton

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Lingrui Chemical Co.,Ltd.

our strengths: 1: Fast and guaranteed shipment (TNT;EMS;FEDEX;DHL;UPS;EUB, special line) 2: Various payment items accepted (Btc; MoneyGram; WU) 3: Valued package (Paraffin coating; Double aluminum foil bag; Vacuum packaging) 4: Efficient delivery

High quality 2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:1 Gram

Negotiable

Type:Other

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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-Diaminobenzoic Acid

Cas:603-81-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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

High quality 2,3-Diaminobenzoic Acid

Cas:603-81-6

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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Henan Tianfu Chemical Co., Ltd.

Product Name: 2,3-Diaminobenzoic acid Synonyms: 3-carboxy-1,2-diaminobenzene;2,3-DIAMINOBENZOIC ACID;2,3-Diaminobenzonicacid;2,3-bis(azanyl)benzoic acid;2,3-diaMinobenzoic acid hydrochloride CAS: 603-81-6 MF: C7H8N2O2 MW: 152.15 EINEC

603-81-6 2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:1 Metric Ton

FOB Price: $8900.0

Type:Lab/Research institutions

inquiry

HANGZHOU TIANYE CHEMICALS CO., LTD.

We 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:2,3-Diaminobenzoic acid CAS No:603-81-

2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:1 Gram

Negotiable

Type:Trading Company

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

Benzoic acid,2,3-diamino-

Cas:603-81-6

Min.Order:0

Negotiable

Type:Other

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:0

Negotiable

Type:Manufacturers

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Enke Pharma-tech Co.,Ltd. (Cangzhou, China )

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, in

Enke 2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:1 Kilogram

FOB Price: $300.0 / 400.0

Type:Lab/Research institutions

inquiry

Changzhou Anchor Biological Technology Co., Ltd.

Our company is engaged in customizing the benzene ring and pyridine derivative organic intermediates, and the quantity is flexible according to customer's needs. It mainly provides high-quality intermediates for domestic and foreign pharmaceutical an

2,3-Diaminobenzoic acid Manufacturer/High quality/Best price/In stock CAS NO.603-81-6

Cas:603-81-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Win-Win chemical Co.Ltd

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

2,3-Diaminobenzoicacid cas no. 603-81-6 98%

Cas:603-81-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hangzhou Dingyan Chem Co., Ltd

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

2,3-DiaMinobenzoic acid

Cas:603-81-6

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

GIHI CHEMICALS CO.,LIMITED

high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,Pharmaceutical intermediates Transportation:air,sea,courier

2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Henan Allgreen Chemical Co.,Ltd

high 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

2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Aecochem Corp.

Our clients, like BASF,CHEMO,Brenntag,ASR,Evonik,Merck and etc.Appearance:COA Storage:in stock Application:MSDS/TDS

2,3-Diaminobenzoic Acid

Cas:603-81-6

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

zhenyu 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 product spec

2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Antimex Chemical Limied

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

Benzoic acid,2,3-diamino-

Cas:603-81-6

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Guangdong Juda Chemical Industrial Co.,Limited

Appearance:solid or liquid Storage:sealed in cool and dry place Package:As customer's requested Application:Pharma Intermediate Transportation:by courier/air/sea Port:Any port in China

2,3-Diaminobenzoic acid CAS No.603-81-6

Cas:603-81-6

Min.Order:0

Negotiable

Type:Trading Company

inquiry

BOC Sciences

We are committed to providing our customers with the best products and services at the most competitive prices.Appearance:white to yellow crystal powder Storage:Room temperature with sealed well Package:according to the clients requirement Applicatio

2,3-Diaminobenzoic acid

Cas:603-81-6

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Hangzhou Fandachem Co.,Ltd

2,3-Diaminobenzoic acid cas 603-81-6Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

2,3-Diaminobenzoic acid cas 603-81-6

Cas:603-81-6

Min.Order:0

Negotiable

Type:Other

inquiry

Synthetic route

3-nitroanthranilic acid
606-18-8

3-nitroanthranilic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
With sodium dithionite In ethanol for 1h; Heating;74%
With palladium 10% on activated carbon; hydrogen In methanol under 760.051 Torr;69%
With hydrogen; 10percent Pd/C In methanol under 760.051 Torr;66%
3-Amino-2-nitrobenzoic acid
116465-92-0

3-Amino-2-nitrobenzoic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
With hydrogenchloride; tin(ll) chloride
With hydrogenchloride; tin
2-acetylamino-3-nitro-benzoic acid
90417-80-4

2-acetylamino-3-nitro-benzoic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
With hydrogenchloride; zinc
hydrogenchloride
7647-01-0

hydrogenchloride

3-Amino-2-nitrobenzoic acid
116465-92-0

3-Amino-2-nitrobenzoic acid

tin

tin

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-carbamoyl-3-nitrobenzoic acid
77326-45-5

2-carbamoyl-3-nitrobenzoic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: aq. KOH; Br2 / 80 °C
2: NaOH; hydrazine hydrate; Raney Ni
View Scheme
Multi-step reaction with 2 steps
1: 93 percent / Br2; aq. KOH / 3 h / 60 °C
2: 66 percent / H2 / 10percent Pd/C / methanol / 760.05 Torr
View Scheme
Multi-step reaction with 2 steps
1: NaOCl, aq. NaOH
2: H2, aq. NaOH / Pd/C / 4 h / 760 Torr
View Scheme
Multi-step reaction with 2 steps
1: sodium hypochlorite; water; sodium hydroxide / 0 - 80 °C
2: hydrazine hydrate; sodium hydroxide / methanol / Reflux
View Scheme
Multi-step reaction with 2 steps
1: bromine; potassium hydroxide / water / 0 - 60 °C
2: hydrogen; palladium 10% on activated carbon / methanol / 760.05 Torr
View Scheme
2-Amino-3-nitrobenzoic acid,ethyl ester
61063-11-4

2-Amino-3-nitrobenzoic acid,ethyl ester

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: aq. KOH / Heating
2: H2, aq. NaOH / Pd/C
View Scheme
ethyl 2-carboxy-3-nitrobenzoate
16533-45-2

ethyl 2-carboxy-3-nitrobenzoate

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: SOCl2 / 1 h / Heating
2: aq. NaN3 / acetone / 1 h / below 25 deg C
3: aq. AcOH / 0.17 h / Heating
4: aq. KOH / Heating
5: H2, aq. NaOH / Pd/C
View Scheme
3-nitro-phthalic acid-1-ethyl ester-2-chloride
136285-66-0

3-nitro-phthalic acid-1-ethyl ester-2-chloride

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: aq. NaN3 / acetone / 1 h / below 25 deg C
2: aq. AcOH / 0.17 h / Heating
3: aq. KOH / Heating
4: H2, aq. NaOH / Pd/C
View Scheme
2-Azidocarbonyl-3-nitro-benzoic acid ethyl ester
124341-05-5

2-Azidocarbonyl-3-nitro-benzoic acid ethyl ester

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: aq. AcOH / 0.17 h / Heating
2: aq. KOH / Heating
3: H2, aq. NaOH / Pd/C
View Scheme
2-nitro-3-(N'-nitro-ureido)-benzoic acid
100949-43-7

2-nitro-3-(N'-nitro-ureido)-benzoic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: water
2: tin; hydrochloric acid
View Scheme
2-methyl-1H-indole
95-20-5

2-methyl-1H-indole

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: diethyl ether
2: potassium permanganate; aqueous KOH-solution
3: zinc; aqueous hydrochloric acid
View Scheme
2-methyl-3-oximino-3H-indole
3484-07-9

2-methyl-3-oximino-3H-indole

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: diethyl ether
2: potassium permanganate; aqueous KOH-solution
3: zinc; aqueous hydrochloric acid
View Scheme
2-methyl-7-nitro-indol-3-one oxime

2-methyl-7-nitro-indol-3-one oxime

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: potassium permanganate; aqueous KOH-solution
2: zinc; aqueous hydrochloric acid
View Scheme
2,3-di-nitrobenzoic acid
15147-64-5

2,3-di-nitrobenzoic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
With stannous chloride In hydrogenchloride; water; acetic acid
3-nitrophthalic acid anhydride
641-70-3

3-nitrophthalic acid anhydride

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: ammonia; water / 0 °C
2: sodium hypochlorite; water; sodium hydroxide / 0 - 80 °C
3: hydrazine hydrate; sodium hydroxide / methanol / Reflux
View Scheme
Multi-step reaction with 3 steps
1: ammonia
2: bromine; sodium hydroxide
3: sodium hydroxide / raney Nickel / methanol
View Scheme
Multi-step reaction with 3 steps
1: ammonium hydroxide / water / 0 °C
2: bromine; potassium hydroxide / water / 0 - 60 °C
3: hydrogen; palladium 10% on activated carbon / methanol / 760.05 Torr
View Scheme
Multi-step reaction with 3 steps
2: sodium hydroxide; sodium hypochlorite / water
3: palladium-carbon / methanol
View Scheme
3-nitrophthalic acid
603-11-2

3-nitrophthalic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: acetic anhydride / Reflux
2: ammonia; water / 0 °C
3: sodium hypochlorite; water; sodium hydroxide / 0 - 80 °C
4: hydrazine hydrate; sodium hydroxide / methanol / Reflux
View Scheme
2-aminoacetyl-3-nitrobenzoic acid
1234834-07-1

2-aminoacetyl-3-nitrobenzoic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: bromine; sodium hydroxide
2: sodium hydroxide / raney Nickel / methanol
View Scheme
ammonium 3-nitrophthalamidate
316833-29-1

ammonium 3-nitrophthalamidate

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium hydroxide; sodium hypochlorite / water
2: palladium-carbon / methanol
View Scheme
furil
492-94-4

furil

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2,3-bis-(2-furyl)-5-quinoxalinecarboxylic acid
90833-34-4

2,3-bis-(2-furyl)-5-quinoxalinecarboxylic acid

Conditions
ConditionsYield
In hydrogenchloride for 1h; heating on boiling water bath;99.8%
orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

benzimidazole-4-carboxylic acid
46006-36-4

benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
at 130℃;98%
at 130℃;7.3 g
2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2,1,3-benzoselenadiazole-4-carboxylic acid
27206-21-9

2,1,3-benzoselenadiazole-4-carboxylic acid

Conditions
ConditionsYield
With hydrogenchloride; selenium(IV) oxide In water at 80℃; for 2h;97%
Difluoroacetic acid
381-73-7

Difluoroacetic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(difluoromethyl)-1H-benzimidazole-4-carboxylic acid
1246548-14-0

2-(difluoromethyl)-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
Stage #1: Difluoroacetic acid; 2,3-diaminobenzoic acid With hydrogenchloride In water for 16h; Reflux;
Stage #2: With ammonia In water
96%
With hydrogenchloride In water at 20℃; for 16h; Reflux;96%
indan-1,2,3-trione hydrate
485-47-2

indan-1,2,3-trione hydrate

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

11-oxo-11H-indeno<1,2-b>quinoxaline-6-carboxylic acid
154458-02-3

11-oxo-11H-indeno<1,2-b>quinoxaline-6-carboxylic acid

Conditions
ConditionsYield
In ethanol for 2h; Reflux;96%
6-chloronicotinylaldehyde
23100-12-1

6-chloronicotinylaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(6-chloropyridin-3-yl)-1H-benzo[d]imidazole-4-carboxylic acid
330948-01-1

2-(6-chloropyridin-3-yl)-1H-benzo[d]imidazole-4-carboxylic acid

Conditions
ConditionsYield
With sodium disulfite In N,N-dimethyl-formamide at 100℃; for 18h;95%
dimethylglyoxal
431-03-8

dimethylglyoxal

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2,3-dimethyl-5-quinoxalinecarboxylic acid
6924-67-0

2,3-dimethyl-5-quinoxalinecarboxylic acid

Conditions
ConditionsYield
In acetic acid for 2h; Heating;94%
1,2-bis(4-methoxyphenyl)-1,2-ethanedione
1226-42-2

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

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2,3-bis-(4-methoxyphenyl)-5-quinoxalinecarboxylic acid
90833-30-0

2,3-bis-(4-methoxyphenyl)-5-quinoxalinecarboxylic acid

Conditions
ConditionsYield
In hydrogenchloride for 1h; heating on boiling water bath;91.9%
With acetic acid for 3h; Reflux;26%
benzil
134-81-6

benzil

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2,3-diphenyl-5-quinoxalinecarboxylic acid
90833-20-8

2,3-diphenyl-5-quinoxalinecarboxylic acid

Conditions
ConditionsYield
In acetic acid for 2h; Heating;89.4%
orthoformic acid triethyl ester
122-51-0

orthoformic acid triethyl ester

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-ethoxyl-1H-benzimidazole-4-carboxylic acid
1234834-29-7

2-ethoxyl-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
In water; acetic acid89%
5-nitrofurane-2-carboxaldehyde
698-63-5

5-nitrofurane-2-carboxaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(5-nitrofuran-2-yl)-1H-benzo[d]imidazole-5-carboxylic acid

2-(5-nitrofuran-2-yl)-1H-benzo[d]imidazole-5-carboxylic acid

Conditions
ConditionsYield
With oxygen; potassium hexacyanoferrate (III) In methanol; water for 16h; Reflux;88%
pyridine-2-carbaldehyde
1121-60-4

pyridine-2-carbaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(pyridin-2-yl)-1H-benzo[d]imidazole-4-carboxylic acid
124340-85-8

2-(pyridin-2-yl)-1H-benzo[d]imidazole-4-carboxylic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 120h;85%
With potassium hexacyanoferrate(III) In N,N-dimethyl-formamide at 60℃; for 10h;78%
With copper diacetate; acetic acid In methanol; water Heating;
With potassium hexacyanoferrate(III) In methanol Heating;
With p-benzoquinone In 1,4-dioxane at 80℃;
2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2,3,4-trimethoxybenzaldehyde
2103-57-3

2,3,4-trimethoxybenzaldehyde

2-(2,3,4-trimethoxyphenyl)-1H-benzimidazole-4-carboxylic acid
124341-04-4

2-(2,3,4-trimethoxyphenyl)-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 120h;85%
With copper diacetate; acetic acid In methanol; water Heating;
tert-butyl 3-(2-formylphenoxy)pyrrolidine-1-carboxylate
1203486-46-7

tert-butyl 3-(2-formylphenoxy)pyrrolidine-1-carboxylate

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(2-(1-(tert-butoxycarbonyl)pyrrolidin-3-yloxy)phenyl)-1H-benzo[d]imidazole-4-carboxylic acid
1203486-47-8

2-(2-(1-(tert-butoxycarbonyl)pyrrolidin-3-yloxy)phenyl)-1H-benzo[d]imidazole-4-carboxylic acid

Conditions
ConditionsYield
With sodium disulfite In N,N-dimethyl-formamide at 90℃; for 18h;84%
pyridine-4-carbaldehyde
872-85-5

pyridine-4-carbaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(pyridin-4-yl)-1H-benzimidazole-4-carboxylic acid
124340-93-8

2-(pyridin-4-yl)-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 120h;83%
With potassium hexacyanoferrate(III) In N,N-dimethyl-formamide at 60℃; for 10h;81%
With copper diacetate; acetic acid In methanol; water Heating;
3-pyridinecarboxaldehyde
500-22-1

3-pyridinecarboxaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(pyridin-3-yl)-1H-benzimidazole-4-carboxylic acid
124340-89-2

2-(pyridin-3-yl)-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 120h;83%
With potassium hexacyanoferrate(III) In N,N-dimethyl-formamide at 60℃; for 10h;80%
With copper diacetate; acetic acid In methanol; water Heating;
With potassium hexacyanoferrate(III) In methanol Heating;
With p-benzoquinone In 1,4-dioxane at 80℃;
cycloheptane-1,2-dione
3008-39-7

cycloheptane-1,2-dione

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

7,8,9,10-Tetrahydro-6H-cyclohepta[b]quinoxaline-1-carboxylic acid
90833-19-5

7,8,9,10-Tetrahydro-6H-cyclohepta[b]quinoxaline-1-carboxylic acid

Conditions
ConditionsYield
In acetic acid for 2h; Heating;82.4%
5-nitrofurane-2-carboxaldehyde
698-63-5

5-nitrofurane-2-carboxaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(5-nitrofuran-2-yl)-1H-benzimidazole-4-carboxylic acid
1160269-54-4

2-(5-nitrofuran-2-yl)-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 120h;82%
3,4-dimethoxy-benzaldehyde
120-14-9

3,4-dimethoxy-benzaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(3,4-dimethoxyphenyl)-1H-benzimidazole-4-carboxylic acid
313278-99-8

2-(3,4-dimethoxyphenyl)-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 120h;81%
With copper diacetate In methanol; water Heating;46%
1-ferrocenyl-2-phenylethane-1,2-dione

1-ferrocenyl-2-phenylethane-1,2-dione

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

ferrocenylphenylquinoxalylcarboxylic acid

ferrocenylphenylquinoxalylcarboxylic acid

Conditions
ConditionsYield
In chlorobenzene N2-atmosphere; 140°C (1 h); CH2Cl2 addn., filtering, washing (H2O), drying (Na2SO4), concg., chromy.(SiO2, Et2O), isolated as mixture of regioisomers; elem. anal.;81%
furfural
98-01-1

furfural

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(furan-2-yl)-1H-benzimidazole-4-carboxylic acid
124340-76-7

2-(furan-2-yl)-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃; for 120h;80%
With copper diacetate; acetic acid In methanol; water Heating;
acetylacetone
123-54-6

acetylacetone

trifluoroacetic acid
76-05-1

trifluoroacetic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

6-carboxy-2,4-dimethyl-3H-benzo[b][1,4]diazepin-1-ium trifluoroacetate

6-carboxy-2,4-dimethyl-3H-benzo[b][1,4]diazepin-1-ium trifluoroacetate

Conditions
ConditionsYield
In ethanol at 20℃; for 0.5h;80%
acetylacetone
123-54-6

acetylacetone

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

6-carboxy-2,4-dimethyl-3H-benzo[b][1,4]diazepin-1-ium hydrogensulfonate

6-carboxy-2,4-dimethyl-3H-benzo[b][1,4]diazepin-1-ium hydrogensulfonate

Conditions
ConditionsYield
With hydrogenchloride; sulfuric acid In ethanol at 20℃; for 0.5h;80%
sodium 1-hydroxy-2-methyl-1-propanesulfonate
13023-74-0

sodium 1-hydroxy-2-methyl-1-propanesulfonate

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(propan-2-yl)-1H-benzimidazole-4-carboxylic acid

2-(propan-2-yl)-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
With sodium hydroxide In water at 15 - 25℃; for 13h; Green chemistry;79%
4-hydroxy-benzaldehyde
123-08-0

4-hydroxy-benzaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(4-hydroxyphenyl)-1H-benzimidazole-4-carboxylic acid

2-(4-hydroxyphenyl)-1H-benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
With potassium hexacyanoferrate(III) In N,N-dimethyl-formamide at 60℃; for 10h;78%
With copper diacetate In methanol; water Heating;
formic acid
64-18-6

formic acid

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

benzimidazole-4-carboxylic acid
46006-36-4

benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
With hydrogenchloride for 1h; Heating;77%
With hydrogenchloride In water for 2h; Reflux;51%
2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

A

benzo[d]oxazole-4-carboxylic acid
208772-23-0

benzo[d]oxazole-4-carboxylic acid

B

benzimidazole-4-carboxylic acid
46006-36-4

benzimidazole-4-carboxylic acid

Conditions
ConditionsYield
With formic acid In hydrogenchloride; methanolA n/a
B 77%
2-Trifluoromethylbenzaldehyde
447-61-0

2-Trifluoromethylbenzaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(2-(trifluoromethyl)phenyl)-1H-benzo[d]imidazole-4-carboxylic acid
1203486-37-6

2-(2-(trifluoromethyl)phenyl)-1H-benzo[d]imidazole-4-carboxylic acid

Conditions
ConditionsYield
With sodium disulfite In N,N-dimethyl-formamide at 100℃; for 17h;74%
salicylaldehyde
90-02-8

salicylaldehyde

2,3-diaminobenzoic acid
603-81-6

2,3-diaminobenzoic acid

2-(2-hydroxyphenyl)-1H-benzo[d]imidazole-4-carboxylic acid

2-(2-hydroxyphenyl)-1H-benzo[d]imidazole-4-carboxylic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 80℃;73%
With sodium metabisulfite In N,N-dimethyl acetamide Heating;25.2%

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