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Dayang Chem (Hangzhou) Co.,Ltd.

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

ETHYL 5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLATE

Cas:4970-53-0

Min.Order:1 Kilogram

FOB Price: $3.0

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

Manufacturer supply CAS 4970-53-0 with best quality

Cas:4970-53-0

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.In No Less 10 years exporting experience. you can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specializ

1,3,4-Oxadiazole-2-carboxylicacid, 5-amino-, ethyl ester

Cas:4970-53-0

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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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.:4970-53-0

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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

1,3,4-Oxadiazole-2-carboxylicacid, 5-amino-, ethyl ester

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Zibo Dorne chemical technology co. LTD

Product 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,

5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTER

Cas:4970-53-0

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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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

5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTER

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

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Win-Win chemical Co.Ltd

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

5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTER cas no. 4970-53-0 98%

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Hunan chemfish Pharmaceutical co.,Ltd

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

5-Amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Manufacturers

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Antimex Chemical Limied

ETHYL 5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLATEAppearance:detailed see specifications Storage:Keep away of light, cool place Package:25kg/drum;200kg/drum Application:Used in Synthesis, Pharmaceuticals and other fields Transportation:Sea/air/courier

ETHYL 5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLATE

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

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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 present

Ethyl 5-amino-1,3,4-oxadiazole-2-carboxylate

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

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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. Application:Chemical intermediate

Ethyl 5-amino-1,3,4-oxadiazole-2-carboxylate

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

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Hangzhou Fandachem Co.,Ltd

5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTERAppearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:pharmaceutical intermediate Transportation:by air, by sea, by express

5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTER

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Other

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Chemlyte Solutions

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

ethyl 5-amino-1,3,4-oxadiazole-2-carboxylate

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Other

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Chemsigma International Co.,Ltd.

bulk?production Application:Pharmaceutical intermediates

5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTER

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

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ZHEJIANG JIUZHOU CHEM CO.,LTD

factory?direct?saleAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:healing drugs Transportation:By sea Port:Shanghai/tianjin

5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTER

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

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Amadis Chemical Co., Ltd.

1.Professional synthesis laboratory and production base. 2.Strong synthesis team and service team. 3.Professional data management system. 4.We provide the professional test date and product information ,ex. HNMR ,CNMR,FNMR, HPLC/G

Ethyl 5-amino-1,3,4-oxadiazole-2-carboxylate

Cas:4970-53-0

Min.Order:10 Milligram

Negotiable

Type:Lab/Research institutions

inquiry

Changzhou Extraordinary Pharmatech co.,LTD

Changzhou Extraordinary Pharmatech co., LTD. As a leading chemical manufacturer and supplier in China.DAS authentication is passed.We can provide the popular precursor chemicals, we have our own strong R & D team, have our own laboratories and fa

ethyl 5-amino-1,3,4-oxadiazole-2-carboxylate

Cas:4970-53-0

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

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Jilin haofei import and export trade Co.,Ltd

Price, service, company and transport advantage: 1. Best service, place of origin China, high quality, and reasonable price. 2. It's customers' right to choose the package (EMS, DHL, FEDEX, UPS). 3. It's customers' right

ETHYL 5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLATE CAS NO.4970-53-0

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

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Yinghao Pharm Co.,Ltd.

Yinghao Pharm products include: leader molecule, heterocyclic compounds,chiral compounds, photoelectric materials, biochemical reagents etc. For example:benzene, pyrimidine, boricacid,pyridine, pyrazole, imidazole, pyrrole, fluorine and other derivat

5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTER

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Hanhong Scientific Co.,Ltd.

factory,reasonable price Appearance:detailed see specifications Storage:Store in dry, dark and ventilated place. Package:according to the clients requirement Application:pharmaceutical intermediates Transportation:by courier,air or sea Port:S

Ethyl 5-amino-1,3,4-oxadiazole-2-carboxylate4970-53-0

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

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Henan Fine Chemicals Co., Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & CommercialHenan Fine Chemicals Co., LTD. is a diversified technology - oriented integrated company, which mainly concentrates on fine chemicals. Our company is committed to becom

ETHYL 5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLATE

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

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Chemical Technology Co.,LTD

1. Production capacity: we have three production base with high-tech production equipment and instruments, equipped with professional production personnel, meet your requirements.2. Quality assurance: we have a first-class testing equipment and testi

5-AMINO-1,3,4-OXADIAZOLE-2-CARBOXYLIC ACID ETHYL ESTER

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Other

inquiry

Finetech Industry Limited

High Quality Best Price Storage:Store in dry, dark and ventilated place Application:Chemical Synthesis Intermediate

FT-0768500

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Wuhan Chemwish Technology Co., Ltd

High quality Products with prompt delivery Package:based on customer requirement Application:organic intermediates Transportation:By air or By sea Port:any port or China

5-Amino-1,3,4-oxadiazole-2-carboxylicacidethylester

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

NovaChemistry

high purity Application:Drug intermediates Materials intermediates and active molecules

ethyl 5-amino-1,3,4-oxadiazole-2-carboxylate

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthon Chemicals GmbH & Co. KG

5-Amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

1,3,4-Oxadiazole-2-carboxylicacid, 5-amino-, ethyl ester

Cas:4970-53-0

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthetic route

bromocyane
506-68-3

bromocyane

oxalic acid diethyl ester
95-92-1

oxalic acid diethyl ester

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
Stage #1: oxalic acid diethyl ester With hydrazine hydrate In ethanol at -20℃; for 0.5h;
Stage #2: bromocyane In ethanol; water at 20℃; for 1h;
31%
ethyl 2-(2-carbamoylhydrazono)acetate
999-47-3

ethyl 2-(2-carbamoylhydrazono)acetate

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: bromine; acetic acid; sodium acetate / 24 h / 20 °C
2: triethylamine / toluene / 0.17 h / 20 - 80 °C
View Scheme
Multi-step reaction with 2 steps
1: bromine; sodium acetate; acetic acid / 24 h / 20 °C
2: triethylamine / toluene / 0.17 h / 20 - 80 °C
View Scheme
Multi-step reaction with 2 steps
1: sodium acetate; bromine / acetic acid / 24 h / 20 °C
2: triethylamine / toluene / 0.17 h / 80 °C
View Scheme
ethyl 2-bromo-2-(2-carbamoylhydrazono)acetate
13599-88-7

ethyl 2-bromo-2-(2-carbamoylhydrazono)acetate

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
With triethylamine In toluene at 20 - 80℃; for 0.166667h;1.04 g
With triethylamine In toluene at 20 - 80℃; for 0.166667h;1.04 g
With triethylamine In toluene at 80℃; for 0.166667h;1.04 g
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

5-amino-1,3,4-oxadiazole-2-carboxylic acid amide
4970-55-2

5-amino-1,3,4-oxadiazole-2-carboxylic acid amide

Conditions
ConditionsYield
With ammonia In methanol at 20℃; for 18h; Concentration; Temperature; Solvent; Sealed tube;99%
(1R,2R)-2-(4-bromobenzoyl)cyclohexane-1-carboxylic acid

(1R,2R)-2-(4-bromobenzoyl)cyclohexane-1-carboxylic acid

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

ethyl 5-({[(1R,2R)-2-(4-bromobenzoyl)cyclohexyl]carbonyl}amino)-1,3,4-oxadiazole-2-carboxylate

ethyl 5-({[(1R,2R)-2-(4-bromobenzoyl)cyclohexyl]carbonyl}amino)-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide; triethylamine In ethyl acetate at 80℃; for 12h;98%
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

sodium 5-amino-1,3,4-oxadiazole-2-carboxylate

sodium 5-amino-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
With water; sodium hydroxide for 1h;82%
2,4-dichloro-2-methylpyrimidine
1780-26-3

2,4-dichloro-2-methylpyrimidine

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

5-(6-chloro-2-methylpyrimidin-4-ylamino)-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester

5-(6-chloro-2-methylpyrimidin-4-ylamino)-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Catalytic behavior; Reagent/catalyst; Solvent; Temperature; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;71%
4-pentynoic acid
6089-09-4

4-pentynoic acid

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

ethyl 5-[(pent-4-ynoyl)amino]-1,3,4-oxadiazole-2-carboxylate

ethyl 5-[(pent-4-ynoyl)amino]-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 25℃; for 18h;70%
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride at 25℃; for 18h;70%
4-chloro-2-methyl-6-phenyl-pyrimidine
2915-15-3

4-chloro-2-methyl-6-phenyl-pyrimidine

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

5-(2-methyl-6-phenylpyrimidin-4-ylamino)-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester

5-(2-methyl-6-phenylpyrimidin-4-ylamino)-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;70%
di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

ethyl 5-[[(tert-butoxy)carbonyl]amino]-1,3,4-oxadiazole-2-carboxylate
1258411-53-8

ethyl 5-[[(tert-butoxy)carbonyl]amino]-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
With dmap; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 40℃;67%
Stage #1: 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With sodium hydride In N,N-dimethyl-formamide at 0℃; for 0.166667h;
Stage #2: di-tert-butyl dicarbonate In N,N-dimethyl-formamide at 20℃; for 16h;
56.2%
With triethylamine In N,N-dimethyl-formamide at 20℃; for 12h;55%
4-chloro-2-methyl-6-(4-nitro-phenyl)-pyrimidine

4-chloro-2-methyl-6-(4-nitro-phenyl)-pyrimidine

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

5-[2-methyl-6-(4-nitrophenyl)pyrimidin-4-ylamino][1,3,4]oxadiazole-2-carboxylic acid ethyl ester

5-[2-methyl-6-(4-nitrophenyl)pyrimidin-4-ylamino][1,3,4]oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;66%
4-chloro-2-methyl-6-(3-nitro-phenyl)-pyrimidine

4-chloro-2-methyl-6-(3-nitro-phenyl)-pyrimidine

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

5-[2-methyl-6-(3-nitrophenyl)pyrimidin-4-ylamino][1,3,4]oxadiazole-2-carboxylic acid ethyl ester

5-[2-methyl-6-(3-nitrophenyl)pyrimidin-4-ylamino][1,3,4]oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;61%
4-chloro-2-methyl-6-(4-methylpiperazin-1-yl)pyrimidine

4-chloro-2-methyl-6-(4-methylpiperazin-1-yl)pyrimidine

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

5-[2-methyl-6-(4-methylpiperazin-1-yl)pyrimidin-4-ylamino][1,3,4]oxadiazole-2-carboxylic acid ethyl ester

5-[2-methyl-6-(4-methylpiperazin-1-yl)pyrimidin-4-ylamino][1,3,4]oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;55%
With xantphos; palladium diacetate; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;55%
methyl iodide
74-88-4

methyl iodide

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

ethyl 5-((bis(methylthio)methylene)amino)-1,3,4-oxadiazole-2-carboxylate

ethyl 5-((bis(methylthio)methylene)amino)-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
Stage #1: 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With sodium hydroxide In N,N-dimethyl-formamide for 0.166667h;
Stage #2: In N,N-dimethyl-formamide for 0.333333h;
Stage #3: methyl iodide In N,N-dimethyl-formamide at 0 - 20℃; for 0.5h;
37%
1-(4-(6-chloro-2-methylpyrimidin-4-yl)piperazin-1-yl)ethanone

1-(4-(6-chloro-2-methylpyrimidin-4-yl)piperazin-1-yl)ethanone

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

5-[2-methyl-6-(4-acetylpiperazin-1-yl)pyrimidin-4-ylamino][1,3,4]oxadiazole-2-carboxylic acid ethyl ester

5-[2-methyl-6-(4-acetylpiperazin-1-yl)pyrimidin-4-ylamino][1,3,4]oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;36%
With xantphos; palladium diacetate; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;36%
2-(4-(6-chloro-2-methylpyrimidin-4-yl)piperazin-1-yl)ethanol
127116-19-2

2-(4-(6-chloro-2-methylpyrimidin-4-yl)piperazin-1-yl)ethanol

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

5-{6-[4-(2-hydroxy-ethyl)piperazin-1-yl]-2-methylpyrimidin-4-ylamino}-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester

5-{6-[4-(2-hydroxy-ethyl)piperazin-1-yl]-2-methylpyrimidin-4-ylamino}-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
With palladium diacetate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;20%
With xantphos; palladium diacetate; sodium t-butanolate In N,N-dimethyl-formamide at 110℃; for 36h; Buchwald-Hartwig Coupling; Schlenk technique; Inert atmosphere;20%
4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzoic acid

4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzoic acid

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

ethyl 5-(4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzamido)-1,3,4-oxadiazole-2-carboxylate

ethyl 5-(4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzamido)-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
Stage #1: 4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzoic acid; 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In dichloromethane; N,N-dimethyl-formamide at 20℃; for 1h;
Stage #2: With dmap; trimethylamine In dichloromethane; N,N-dimethyl-formamide at 20℃;
9%
N,N-dimethylformamide diethyl diacetal
1188-33-6

N,N-dimethylformamide diethyl diacetal

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

5-(dimethylamino-methyleneamino)-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester
37582-75-5

5-(dimethylamino-methyleneamino)-[1,3,4]oxadiazole-2-carboxylic acid ethyl ester

Conditions
ConditionsYield
In ethanol
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

ethyl 5-bromo-1,3,4-oxadiazole-2-carboxylate
916889-45-7

ethyl 5-bromo-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
Stage #1: 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With copper(ll) bromide In acetonitrile at 20℃; for 0.25h;
Stage #2: With tert.-butylnitrite In acetonitrile at 20 - 50℃; for 2.5h;
ethylmagnesium bromide
925-90-6

ethylmagnesium bromide

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

3-(5-amino-1,3,4-oxadiazol-2-yl)pentan-3-ol
910656-41-6

3-(5-amino-1,3,4-oxadiazol-2-yl)pentan-3-ol

Conditions
ConditionsYield
In tetrahydrofuran at 0 - 20℃; for 0.5h; Mechanism;
cyclopropylmagnesium bromide
23719-80-4

cyclopropylmagnesium bromide

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

(5-amino-1,3,4-oxadiazol-2-yl)(dicyclopropyl)methanol

(5-amino-1,3,4-oxadiazol-2-yl)(dicyclopropyl)methanol

Conditions
ConditionsYield
Stage #1: cyclopropylmagnesium bromide; 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester In tetrahydrofuran at -78 - 20℃;
Stage #2: With ammonium chloride In tetrahydrofuran; water
ethylmagnesium bromide
925-90-6

ethylmagnesium bromide

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

1-(5-amino-1,3,4-oxadiazol-2-yl)propan-1-one

1-(5-amino-1,3,4-oxadiazol-2-yl)propan-1-one

Conditions
ConditionsYield
Stage #1: ethylmagnesium bromide; 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester In tetrahydrofuran at -78 - 20℃;
Stage #2: With ammonium acetate In tetrahydrofuran; water
cinchophen
132-60-5

cinchophen

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

N-(5-ethoxycarbonyl-1,3,4-oxadiazol-2-yl)-2-phenyl-4-quinolinecarboxamide
1236056-69-1

N-(5-ethoxycarbonyl-1,3,4-oxadiazol-2-yl)-2-phenyl-4-quinolinecarboxamide

Conditions
ConditionsYield
With 1-hydroxy-7-aza-benzotriazole; N-ethyl-N,N-diisopropylamine; HATU In N,N-dimethyl-formamide
2-phenylquinoline-4-carbonyl chloride
59661-86-8

2-phenylquinoline-4-carbonyl chloride

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

N-(5-ethoxycarbonyl-1,3,4-oxadiazol-2-yl)-2-phenyl-4-quinolinecarboxamide
1236056-69-1

N-(5-ethoxycarbonyl-1,3,4-oxadiazol-2-yl)-2-phenyl-4-quinolinecarboxamide

Conditions
ConditionsYield
With pyridine at 20 - 60℃;
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

Ethyl 5-({[(3S)-2-((2R)-3-cyclopentyl-2-{[formyl(hydroxy)amino]methyl}propanoyl)-3-pyrazolidinyl]carbonyl}amino)-1,3,4-oxadiazole-2-carboxylate
1398750-50-9

Ethyl 5-({[(3S)-2-((2R)-3-cyclopentyl-2-{[formyl(hydroxy)amino]methyl}propanoyl)-3-pyrazolidinyl]carbonyl}amino)-1,3,4-oxadiazole-2-carboxylate

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

1,3,4-oxadiazol-2-amine
3775-60-8

1,3,4-oxadiazol-2-amine

Conditions
ConditionsYield
With sodium hydroxide In water for 0.0833333h;0.02 g
With water; sodium hydroxide at 20℃; for 0.0833333h;0.02 g
With sodium hydroxide In water at 20℃; for 0.0833333h;0.02 g
6-(5-chloro-7-methoxy-2,3-diphenylpyrazolo[1,5-a] pyrimidin-6-yl)quinoline

6-(5-chloro-7-methoxy-2,3-diphenylpyrazolo[1,5-a] pyrimidin-6-yl)quinoline

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

ethyl 5-((7-oxo-2,3-diphenyl-6-(quinolin-6-yl)-4,7-dihydropyrazolo[1,5-a]pyrimidin-5-yl)amino)-1,3,4-oxadiazole-2-carboxylate

ethyl 5-((7-oxo-2,3-diphenyl-6-(quinolin-6-yl)-4,7-dihydropyrazolo[1,5-a]pyrimidin-5-yl)amino)-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
With palladium diacetate; caesium carbonate; 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene In 1,4-dioxane at 100℃; for 16h; Inert atmosphere;
5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

ethyl 5-((6-chloro-1H-benzo[d]imidazol-2-yl)amino)-1,3,4-oxadiazole-2-carboxylate

ethyl 5-((6-chloro-1H-benzo[d]imidazol-2-yl)amino)-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: sodium hydroxide / N,N-dimethyl-formamide / 0.17 h
1.2: 0.33 h
1.3: 0.5 h / 0 - 20 °C
2.1: N,N-dimethyl-formamide / 16 h / 120 °C
View Scheme
4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzoic acid

4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzoic acid

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester
4970-53-0

5-amino-1,3,4-oxadiazole-2-carboxylic acid ethyl ester

ethyl 5-(4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzamido)-1,3,4-oxadiazole-2-carboxylate

ethyl 5-(4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzamido)-1,3,4-oxadiazole-2-carboxylate

B

ethyl 5-(4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzamido)-1,3,4-oxadiazole-2-carboxylate

ethyl 5-(4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzamido)-1,3,4-oxadiazole-2-carboxylate

Conditions
ConditionsYield
Stage #1: 4-((3,5-dimethylpiperidin-1-yl)sulfonyl)benzoic acid; 5-amino[1,3,4]oxadiazole-2-carboxylic acid ethyl ester With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In dichloromethane; N,N-dimethyl-formamide at 20℃; for 1h; Sealed tube;
Stage #2: With dmap; triethylamine In dichloromethane; N,N-dimethyl-formamide at 20℃; Sealed tube; Overall yield = 9%; Overall yield = 19 mg;
A n/a
B n/a

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