AllyChem Co., Ltd., Dalian, China was founded in 2004 with a registered capital of 66 million yuan and is located in dagushan peninsula chemical industrial park, jinzhou new district, dalian.It is a pharmaceutical intermediates based on the research
Cas:269410-08-4
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Type:Trading Company
inquiryGOLDEN 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
Cas:269410-08-4
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inquiryOur Company main product 一:suzuki reaction customization 二:Boronic acid derivative ①:phenylboronic acid derivative ②:Phenylboronic acid pinacol ester derivative ③:Potassium phenyltrifluoroborate derivative ④:Phenylboronic acid MIDA ester derivative
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inquiryDayangchem'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:269410-08-4
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inquiryProduct description: Product name Pyrazole-4-boronic acid pinacol ester CAS number 269410-08-4 Assay ≥99% Appearance Off-white to tan powder Capacity 200mt/year Application P
Cas:269410-08-4
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inquiryPyrazole-4-boronic acid pinacol ester CAS No.:269410-08-4 Name: Pyrazole-4-boronic acid pinacol ester Synonyms: 4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole Molecular Structure
Cas:269410-08-4
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inquiryhigh quality Appearance:White or off white powder Storage:Sealed, dry, microtherm , avoid light and smell Package:According to the demand of customer Application:Pharmaceutical intermediates Transportation:by air or by sea Port:shanghai
Cas:269410-08-4
Min.Order:1 Kilogram
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Type:Manufacturers
inquiryThe above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
Cas:269410-08-4
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inquiry1. Factory price and high quality must be guaranteed, base on 8 years of production and R&D experience2. Free samples will be provided,ensure specifications and quality are right for customer3. Customers will receive the most professional technical s
Cas:269410-08-4
Min.Order:1 Gram
FOB Price: $0.1
Type:Manufacturers
inquiryColorcom is a global leader in industrial chemical manufacturing and is continuously innovating and transforming to exceed client expectations and industry standards. Colorcom prides itself on superior customer and technical focus, while focusing on
Cas:269410-08-4
Min.Order:1 Metric Ton
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inquiry
Cas:269410-08-4
Min.Order:1 Metric Ton
FOB Price: $1.0
Type:Manufacturers
inquiryOur company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O
Cas:269410-08-4
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryOur 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
Cas:269410-08-4
Min.Order:1 Kilogram
FOB Price: $9.0 / 99.0
Type:Trading Company
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:269410-08-4
Min.Order:1 Kilogram
FOB Price: $139.0 / 210.0
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inquiry1. Best prices with satisfied quality; 2. It's clients' right to choose the package's Courier (EMS, DHL, FedEx, UPS); 3.It's clients' right to choose the packing way for his produccts from many recent effective packing ways;
Cas:269410-08-4
Min.Order:0 Metric Ton
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Type:Trading Company
inquiryhebei 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
Cas:269410-08-4
Min.Order:1 Kilogram
FOB Price: $2.0 / 5.0
Type:Trading Company
inquiry1.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
Cas:269410-08-4
Min.Order:1 Kilogram
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inquiryOur 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 prese
Cas:269410-08-4
Min.Order:1 Kilogram
FOB Price: $76.0 / 85.0
Type:Trading Company
inquiry4-Pyrazoleboronic acid pinacol ester CAS:269410-08-4 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 qua
Cas:269410-08-4
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiryHenan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia
Cas:269410-08-4
Min.Order:0
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inquiryTriumph has the complete production of G- KG - MT service chain,we can make the new technology into productivity quickly in the research and development of new products. Main Service 1.Own made fine chemical products 2.Out sourcing and qua
Cas:269410-08-4
Min.Order:0 Metric Ton
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inquiryHangzhou 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
Cas:269410-08-4
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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
Cas:269410-08-4
Min.Order:4 Kilogram
Negotiable
Type:Lab/Research institutions
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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inquiryChemlyte 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
Cas:269410-08-4
Min.Order:100 Gram
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Type:Other
inquiryMassive Chemical is certified with ISO9001 and ISO14001 manufacturer for this product. We will offer all documents as requirement for the materials which includes, Certificate of Analysis, Material Safety Data Sheet, and Method of Analysis and
Cas:269410-08-4
Min.Order:1 Gram
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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
Cas:269410-08-4
Min.Order:10 Gram
FOB Price: $100.0
Type:Lab/Research institutions
inquiry4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazoleAppearance:powder Storage:store in a cool dry place and keep away from strong Package:according to customers' requirements Application:in research Transportation:By air(EMS or EUB or FedEx or
Cas:269410-08-4
Min.Order:1 Gram
Negotiable
Type:Other
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:269410-08-4
Min.Order:1 Gram
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Type:Lab/Research institutions
inquiry1-(1-ethoxyethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With hydrogenchloride; 2,3-dimethyl-2,3-butane diol In water at 10 - 25℃; for 4.083h; | 94% |
With hydrogenchloride; 2,3-dimethyl-2,3-butane diol In tert-butyl methyl ether; 1,2-dichloro-ethane at 0 - 20℃; Large scale; | 77.3% |
With hydrogenchloride; 2,3-dimethyl-2,3-butane diol In tert-butyl methyl ether; 1,2-dichloro-ethane at 0 - 20℃; Large scale; | 77.3% |
4-bromo-1H-pyrazole
bis(pinacol)diborane
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With bis-triphenylphosphine-palladium(II) chloride; tetrabutylammomium bromide; potassium carbonate In 1,4-dioxane for 12h; Inert atmosphere; Reflux; | 94% |
With dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2; potassium acetate In N,N-dimethyl-formamide at 100℃; | 25% |
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium acetate In 1,4-dioxane at 80℃; Inert atmosphere; | |
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium acetate In 1,4-dioxane at 80℃; Miyaura Borylation Reaction; Inert atmosphere; | |
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium acetate In 1,4-dioxane at 80℃; Miyaura Borylation Reaction; Inert atmosphere; |
NH-pyrazole
4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With (1,5-cyclooctadiene)(methoxy)iridium(I) dimer; 3,4,7,8-Tetramethyl-o-phenanthrolin In tetrahydrofuran at 80℃; for 4h; Inert atmosphere; Glovebox; regioselective reaction; | 88% |
With (1,5-cyclooctadiene)(methoxy)iridium(I) dimer; 3,4,7,8-Tetramethyl-o-phenanthrolin In tetrahydrofuran at 80℃; for 4h; Schlenk technique; Inert atmosphere; | 67% |
4-chloro-1H-pyrazole
bis(pinacol)diborane
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With potassium phosphate tribasic heptahydrate; chloro(2-dicyclohexylphosphino-2’,4’,6’-triisopropyl-1,1‘-biphenyl)[2-(2’-amino-1,1‘-biphenyl’)]palladium(II); XPhos In ethanol at 20℃; for 0.5h; | 88% |
tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole-1-carboxylate
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
at 180℃; | 80.2% |
at 180℃; for 0.0833333h; | 72% |
4-iodo-1H-pyrazole-1-carboxylic acid tert-butyl ester
2-dimethylamino-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With iPrBu2MgLi In 2-methyltetrahydrofuran at -20 - -10℃; Large scale; | 79% |
2-dimethylamino-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
4-bromopyrazole-1-carboxylic acid tert-butyl ester
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With n-Bu3MgLi In tetrahydrofuran at -20 - -10℃; Large scale; | 76% |
NH-pyrazole
bis(pinacol)diborane
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With (1,5-cyclooctadiene)(methoxy)iridium(I) dimer; 3,4,7,8-Tetramethyl-o-phenanthrolin In tetrahydrofuran at 80℃; for 21h; Inert atmosphere; Glovebox; | 56% |
2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
Stage #1: 4-iodo-1-trimethylsilylpyrazole With isopropylmagnesium chloride In tetrahydrofuran at -6 - 0℃; Inert atmosphere; Stage #2: 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane In tetrahydrofuran at 0 - 20℃; Inert atmosphere; | 54.8% |
Stage #1: 4-iodo-1-trimethylsilylpyrazole With isopropylmagnesium chloride In tetrahydrofuran at -6 - 0℃; for 0.166667h; Inert atmosphere; Stage #2: 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane In tetrahydrofuran at 0 - 20℃; for 2h; Inert atmosphere; Stage #3: With water; ammonium chloride In tetrahydrofuran at -6 - 0℃; | 54.8% |
Stage #1: 4-iodo-1-trimethylsilylpyrazole With isopropylmagnesium chloride In tetrahydrofuran at -6 - 0℃; for 0.166667h; Stage #2: 2-Isopropoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane In tetrahydrofuran at 0 - 20℃; for 2.17h; | 54.8% |
4-iodopyrazole
4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
Stage #1: With triethylamine; (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride In 1,4-dioxane at 80℃; for 18h; Stage #2: 4-iodopyrazole; 4,4,5,5-tetramethyl-[1,3,2]-dioxaboralane In 1,4-dioxane at 80℃; for 18h; |
4-iodopyrazole
2-methoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
Stage #1: 4-iodopyrazole With isopropylmagnesium chloride In tetrahydrofuran at -10℃; for 2.5h; Inert atmosphere; Stage #2: 2-methoxy-4,4,5,5-tetramethyl-1,3,2-dioxaborolane In tetrahydrofuran at 20℃; for 2h; Inert atmosphere; |
bis(pinacol)diborane
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; potassium acetate / ethanol / 16 h / Inert atmosphere; Reflux 2: 180 °C View Scheme |
pyrazole-4-boronic acid pinacol ester
3-[(5-bromo-[1,2,4]triazolo[1,5-a]pyrazin-8-yl)-tert-butoxycarbonyl-amino]benzoic acid ethyl ester
3-{tert-butoxycarbonyl-[5-(1H-pyrazol-4-yl)-[1,2,4]triazolo[1,5-a]pyrazin-8-yl]-amino}benzoic acid ethyl ester
Conditions | Yield |
---|---|
With potassium carbonate; dichloro(1,1'-bis(diphenylphosphanyl)ferrocene)palladium(II)*CH2Cl2 In 1,4-dioxane; water at 115℃; for 0.416667h; | 100% |
glycidyl methyl ether
pyrazole-4-boronic acid pinacol ester
1-methoxy-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)propan-2-ol
Conditions | Yield |
---|---|
at 98℃; for 4h; | 100% |
pyrazole-4-boronic acid pinacol ester
3-(cyanomethylene)azetidine-1-carboxylic acid tert-butyl ester
tert-butyl 3-(cyanomethyl)-3-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)azetidine-1-carboxylate
Conditions | Yield |
---|---|
With 1,8-diazabicyclo[5.4.0]undec-7-ene In acetonitrile at 50℃; | 100% |
With 1,8-diazabicyclo[5.4.0]undec-7-ene In isopropyl alcohol Reflux; Inert atmosphere; | 90.5% |
With 1,8-diazabicyclo[5.4.0]undec-7-ene In isopropyl alcohol Reflux; | 90.5% |
2-iodo-propane
pyrazole-4-boronic acid pinacol ester
1-isopropylpyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 90℃; for 16h; Inert atmosphere; | 100% |
With caesium carbonate In N,N-dimethyl-formamide at 90℃; for 16h; | 61.72% |
With caesium carbonate In N,N-dimethyl-formamide at 0 - 20℃; | 57% |
pyrazole-4-boronic acid pinacol ester
3-{[tert-butyl(dimethyl)silyl]oxy}-2-fluoropropyltrifluoromethanesulfonate
(3-{[tert-butyl(dimethyl)silyl]oxy}-2-fluoropropyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
Conditions | Yield |
---|---|
Stage #1: pyrazole-4-boronic acid pinacol ester With sodium hydride In N,N-dimethyl-formamide; mineral oil at 20℃; for 0.5h; Inert atmosphere; Stage #2: 3-{[tert-butyl(dimethyl)silyl]oxy}-2-fluoropropyltrifluoromethanesulfonate In N,N-dimethyl-formamide; mineral oil for 0.333333h; Inert atmosphere; | 100% |
pyrazole-4-boronic acid pinacol ester
2-chloroethyl methyl ether
1-(2-methoxyethyl)-4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-1H-pyrazole
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 160℃; for 0.5h; Microwave irradiation; | 100% |
With caesium carbonate In N,N-dimethyl-formamide at 160℃; for 0.5h; Microwave irradiation; | 100% |
With caesium carbonate In N,N-dimethyl-formamide at 160℃; for 0.5h; microwave irradiation; | 72% |
With caesium carbonate In N,N-dimethyl-formamide at 160℃; for 0.5h; Microwave irradiation; | 72% |
bromoacetopyrrolidine
pyrazole-4-boronic acid pinacol ester
1-(pyrrolidin-1-yl)-2-(4-(4,4,5,5-tetramethyl-1,3,2- dioxaborolan-2-yl)-1H-pyrazol-1-yl)ethan-1-one
Conditions | Yield |
---|---|
In acetonitrile at 20℃; | 100% |
pyrazole-4-boronic acid pinacol ester
2-(2,2,2-trifluoroethyl)oxirane
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 80℃; | 100% |
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 20℃; for 24h; | 100% |
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With tributylphosphine; diamide In toluene at 20℃; Mitsunobu Displacement; Sonication; | 100% |
With tributylphosphine; diamide In toluene at 20℃; Inert atmosphere; | 100% |
pyrazole-4-boronic acid pinacol ester
1-(oxetan-3-ylmethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
Conditions | Yield |
---|---|
With cyanomethylenetributyl-phosphorane In 1,4-dioxane at 150℃; for 0.75h; Microwave irradiation; | 100% |
pyrazole-4-boronic acid pinacol ester
di-tert-butyl dicarbonate
tert-butyl 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyrazole-1-carboxylate
Conditions | Yield |
---|---|
With dmap In N,N-dimethyl-formamide at 0 - 20℃; | 99% |
With dmap; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; | 99.68% |
With dmap In dichloromethane at 20℃; for 4h; | 85% |
pyrazole-4-boronic acid pinacol ester
1-Bromo-2-chloroethane
1-(2-chloroethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
Conditions | Yield |
---|---|
With caesium carbonate In acetonitrile at 70℃; for 6h; | 99% |
With caesium carbonate In acetonitrile at 62℃; for 4h; | 90% |
With caesium carbonate In acetonitrile at 75℃; for 5h; | 88% |
With caesium carbonate In acetonitrile at 75℃; for 5h; |
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 60℃; for 1h; | 99% |
pyrazole-4-boronic acid pinacol ester
2-nitrophenyl bromide
Conditions | Yield |
---|---|
With bis-triphenylphosphine-palladium(II) chloride; tetrabutylammomium bromide; potassium carbonate In N,N-dimethyl-formamide | 98.5% |
pyrazole-4-boronic acid pinacol ester
bromobenzene
4-phenyl-1H-pyrazole
Conditions | Yield |
---|---|
With tetrabutylammomium bromide; potassium carbonate; palladium dichloride In N,N-dimethyl-formamide at 130℃; for 16h; Inert atmosphere; | 98% |
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With tetrakis(triphenylphosphine) palladium(0); sodium carbonate In 1,4-dioxane at 90℃; for 12h; Inert atmosphere; Sealed tube; | 98% |
pyrazole-4-boronic acid pinacol ester
ethyl vinyl ether
1-(1-ethoxyethyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
Conditions | Yield |
---|---|
Stage #1: pyrazole-4-boronic acid pinacol ester; ethyl vinyl ether With hydrogenchloride In 1,4-dioxane; toluene at 35 - 40℃; Inert atmosphere; Stage #2: With sodium hydrogencarbonate In 1,4-dioxane; toluene for 1h; Product distribution / selectivity; | 97.3% |
With hydrogenchloride In 1,4-dioxane; toluene at 35℃; Inert atmosphere; | 90% |
In toluene at 35℃; for 13h; Inert atmosphere; |
pyrazole-4-boronic acid pinacol ester
Methyl 2-bromobutyrate
Conditions | Yield |
---|---|
With caesium carbonate In Petroleum ether | 97% |
pyrazole-4-boronic acid pinacol ester
(2-chloroethyl)dimethylamine hydrochloride
N,N-dimethyl-2-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)ethan-1-amine
Conditions | Yield |
---|---|
With caesium carbonate In acetonitrile for 5h; Reflux; | 95% |
With caesium carbonate In acetonitrile at 90℃; | 88% |
With caesium carbonate In N,N-dimethyl-formamide at 0 - 20℃; for 72.5h; | 66% |
pyrazole-4-boronic acid pinacol ester
ethyl 3-(2-(((trifluoromethyl)sulfonyl)oxy)naphthalene-1-yl)propanoate
ethyl 3-(2-(1H-pyrazol-4-yl)naphthalen-1-yl)propanoate
Conditions | Yield |
---|---|
With bis-triphenylphosphine-palladium(II) chloride; sodium carbonate In 1,4-dioxane for 4h; Suzuki-Miyaura Coupling; Reflux; | 95% |
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; caesium carbonate In 1,4-dioxane; water at 90℃; for 1h; Inert atmosphere; Microwave irradiation; | 95% |
pyrazole-4-boronic acid pinacol ester
allyl bromide
1-allyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
Conditions | Yield |
---|---|
With sodium hexamethyldisilazane In tetrahydrofuran at 70℃; | 94% |
With caesium carbonate In N,N-dimethyl-formamide at 100℃; for 1h; Microwave irradiation; | 39% |
pyrazole-4-boronic acid pinacol ester
2-(bromomethyl)benzonitrile
C17H20BN3O2
Conditions | Yield |
---|---|
With potassium carbonate In acetonitrile for 72h; Heating / reflux; | 94% |
3,4-dihydro-2H-pyran
pyrazole-4-boronic acid pinacol ester
1-(tetrahydro-2H-pyran-2-yl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
Conditions | Yield |
---|---|
With trifluoroacetic acid In toluene at 90℃; for 2h; | 94% |
With toluene-4-sulfonic acid In dichloromethane at 20℃; for 4h; | 90% |
With toluene-4-sulfonic acid In dichloromethane at 20℃; for 4h; | 90% |
pyrazole-4-boronic acid pinacol ester
p-methoxybenzyl chloride
1-(4-methoxybenzyl)-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole
Conditions | Yield |
---|---|
With potassium carbonate In acetonitrile at 80℃; for 5h; | 94% |
With potassium carbonate In acetonitrile at 80℃; for 5h; | 91% |
With potassium carbonate In acetonitrile at 60℃; for 15h; | 73.3% |
With potassium carbonate In acetonitrile at 80℃; for 5h; | |
With caesium carbonate In acetonitrile for 4h; Reflux; |
pyrazole-4-boronic acid pinacol ester
3-chloro-2-methylpropan-2-ol
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide at 160℃; for 2.5h; Microwave irradiation; | 94% |
pyrazole-4-boronic acid pinacol ester
Conditions | Yield |
---|---|
With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate In 1,4-dioxane; water at 80℃; for 16h; Inert atmosphere; | 94% |
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