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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
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inquiryZibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi
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inquiryGMP 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,
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
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Min.Order:1 Kilogram
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inquiryLower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe
Acmec is a leading manufacturer and supplier of biochemical reagents and life science products. We have over 40,000 items in stock (real-time inventory) and offer discounted prices to registered members of the online store ( www.acmec.com.cn ) Appea
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inquiryJ&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals
high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:Beijing or Guangzhou
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inquiryfactory?direct?sale Application:healing drugs
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inquiryFactory supply high purity low priceAppearance: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
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inquirygood quality, competitive price, thoughtful after sale serviceAppearance:white powder Storage:Keep it in dry,shady and cool place Package:1.2ml Application:Pharma;Industry;Agricultural;chemical reaserch Transportation:by express or by sea Port:Any po
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ISO 9001 Certified We implement ISO management throughout our day to day operation. Since we started ISO system in Year 2008, we improve each year to implement the management system in details of each supplying process. This helps us to provi
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inquiryOur company is a professional production leading factory in China in pharmaceutical area of many years,our products have exported to USA, Greece, Spain, UK, Australia and other countries, and we have got very good feedback from our cust
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Min.Order:100 Kilogram
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inquiryU-CHEMO is a high-tech enterprise taking pharmaceutical intermediates and fine chemicals as main products. We pay high attention on product quality and apply quality management in the whole manufacturing process from research to production. In additi
Manufactuer, Tech grade, competitive price, fast delivery, and superior services Appearance:solid Storage:in cool dry container Package:bucket/bottle Application:herbicide Transportation:FOB, by sea or by air Port:Shanghai
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inquiryPOTASSIUM TELLURATE
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inquiryPyraflufen-ethyl
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Min.Order:0
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inquiryethanol
1-methyl-3-[2-fluoro-4-chloro-5-(ethoxycarbonylmethoxy)phenyl]-4-chloro-5-difluoromethoxypyrazole
Conditions | Yield |
---|---|
Stage #1: 3-{4-chloro-2-fluoro-5-(N-methylcarbamoylmethoxy)phenyl}-5-difluoromethoxy-1-methylpyrazole With sulfuryl dichloride; acetic acid In chlorobenzene at 40℃; for 1h; Stage #2: ethanol With sulfuric acid In chlorobenzene at 100℃; for 9h; | 85.5% |
1-methyl-3-[2-fluoro-4-chloro-5-(ethoxycarbonylmethoxy)phenyl]-4-chloro-5-difluoromethoxypyrazole
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: bromine / chlorobenzene / 1 h / 50 °C 2.1: chlorobenzene; methanol / 1 h / 40 °C 3.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 3.2: 2 h / 60 - 80 °C 4.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 5.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 5.2: 9 h / 100 °C View Scheme | |
Multi-step reaction with 6 steps 1.1: bromine / chlorobenzene / 1 h / 50 °C 2.1: triethylamine / chlorobenzene / 1.5 h / 40 - 70 °C 3.1: methanol / 1 h / 40 °C 4.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 4.2: 2 h / 60 - 80 °C 5.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 6.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 6.2: 9 h / 100 °C View Scheme |
1-methyl-3-[2-fluoro-4-chloro-5-(ethoxycarbonylmethoxy)phenyl]-4-chloro-5-difluoromethoxypyrazole
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: chlorobenzene; methanol / 1 h / 40 °C 2.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 2.2: 2 h / 60 - 80 °C 3.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 4.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 4.2: 9 h / 100 °C View Scheme | |
Multi-step reaction with 5 steps 1.1: triethylamine / chlorobenzene / 1.5 h / 40 - 70 °C 2.1: methanol / 1 h / 40 °C 3.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 3.2: 2 h / 60 - 80 °C 4.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 5.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 5.2: 9 h / 100 °C View Scheme |
1-methyl-3-[2-fluoro-4-chloro-5-(ethoxycarbonylmethoxy)phenyl]-4-chloro-5-difluoromethoxypyrazole
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 1.2: 2 h / 60 - 80 °C 2.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 3.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 3.2: 9 h / 100 °C View Scheme |
1-methyl-3-[2-fluoro-4-chloro-5-(ethoxycarbonylmethoxy)phenyl]-4-chloro-5-difluoromethoxypyrazole
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: methanol / 1 h / 40 °C 2.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 2.2: 2 h / 60 - 80 °C 3.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 4.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 4.2: 9 h / 100 °C View Scheme |
1-methyl-3-[2-fluoro-4-chloro-5-(ethoxycarbonylmethoxy)phenyl]-4-chloro-5-difluoromethoxypyrazole
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 2.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 2.2: 9 h / 100 °C View Scheme |
5-bromo-2-chloro-4-fluorophenyl methyl carbonate
1-methyl-3-[2-fluoro-4-chloro-5-(ethoxycarbonylmethoxy)phenyl]-4-chloro-5-difluoromethoxypyrazole
Conditions | Yield |
---|---|
Multi-step reaction with 7 steps 1.1: sodium hydroxide / ethanol / 10 h / 20 °C 2.1: tetrabutylammomium bromide; palladium diacetate; sodium hydrogencarbonate / N,N-dimethyl-formamide / 4 h / 120 °C / Inert atmosphere 3.1: bromine / chlorobenzene / 1 h / 50 °C 4.1: chlorobenzene; methanol / 1 h / 40 °C 5.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 5.2: 2 h / 60 - 80 °C 6.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 7.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 7.2: 9 h / 100 °C View Scheme | |
Multi-step reaction with 8 steps 1.1: sodium hydroxide / ethanol / 10 h / 20 °C 2.1: tetrabutylammomium bromide; palladium diacetate; sodium hydrogencarbonate / N,N-dimethyl-formamide / 4 h / 120 °C / Inert atmosphere 3.1: bromine / chlorobenzene / 1 h / 50 °C 4.1: triethylamine / chlorobenzene / 1.5 h / 40 - 70 °C 5.1: methanol / 1 h / 40 °C 6.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 6.2: 2 h / 60 - 80 °C 7.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 8.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 8.2: 9 h / 100 °C View Scheme |
1-methyl-3-[2-fluoro-4-chloro-5-(ethoxycarbonylmethoxy)phenyl]-4-chloro-5-difluoromethoxypyrazole
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1.1: tetrabutylammomium bromide; palladium diacetate; sodium hydrogencarbonate / N,N-dimethyl-formamide / 4 h / 120 °C / Inert atmosphere 2.1: bromine / chlorobenzene / 1 h / 50 °C 3.1: chlorobenzene; methanol / 1 h / 40 °C 4.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 4.2: 2 h / 60 - 80 °C 5.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 6.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 6.2: 9 h / 100 °C View Scheme | |
Multi-step reaction with 7 steps 1.1: tetrabutylammomium bromide; palladium diacetate; sodium hydrogencarbonate / N,N-dimethyl-formamide / 4 h / 120 °C / Inert atmosphere 2.1: bromine / chlorobenzene / 1 h / 50 °C 3.1: triethylamine / chlorobenzene / 1.5 h / 40 - 70 °C 4.1: methanol / 1 h / 40 °C 5.1: hydrogenchloride / ethanol; water / 2 h / 60 °C 5.2: 2 h / 60 - 80 °C 6.1: tetrabutyl-ammonium chloride; sodium hydroxide / acetonitrile / 5 h / 20 °C 7.1: acetic acid; sulfuryl dichloride / chlorobenzene / 1 h / 40 °C 7.2: 9 h / 100 °C View Scheme |
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