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inquiryNow we would like to update our product list for you, kindly check the below information: 1. Catalyst series ( such as Noble Metal Catalyst, Phosphorous ligand, etc ) 2. Pharmaceutical Intermediate ( such as diabtes series, Anti-AID
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inquirysuperior quality moderate price & quick delivery Appearance:White to yellow crystalline powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:1kg/bag, 1kg/drum or 25kg/drum or as per your request. Appli
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inquiryhigh purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou
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inquirybulk productiongoods in stockswe have the best competitive price in the marketmeantime,we are committed to service to our every customer Chemsigma International Co.,Ltd. is a chemical manufacturer, specialize in custom synthesis and organic chemical
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inquiryAmoychem is committed to providing the top-quality chemical products and services Internationally. We offer our customers with friendly, professional service and reliable, high performance products that have been manufactured according to the accredi
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inquiryAppearance: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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inquiry4-Nitrosalicylic acid cas 619-19-2Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express
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*stable and better quality products*efficient and meticulous servicesAppearance:Powder Storage:Store in dry, cool and ventilated place Package:10G/bottle 1kg/tin 5kg/tin 25kg/carton Application:1. Chemical raw materials 2. Used as an analytical reage
Conditions | Yield |
---|---|
With boron tribromide In dichloromethane | 97% |
With sulfuric acid | |
With hydrogen bromide | |
With hydrogen bromide; acetic acid at 90℃; for 72h; |
Conditions | Yield |
---|---|
In dichloromethane at 0 - 20℃; for 2h; | 97% |
Conditions | Yield |
---|---|
With pyridine; water; potassium carbonate; copper for 0.25h; sonication; | 96% |
With pyridine; copper; potassium carbonate In water for 2h; Heating; | 90% |
With quicklime; water; copper at 160 - 170℃; | |
With copper(l) iodide; copper; potassium carbonate | |
With calcium hydroxide; copper diacetate In water at 160℃; for 7h; |
2-(hydroxymethyl)-5-nitrophenol
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With sodium hypochlorite; water at 25℃; for 0.5h; | 96% |
With oxygen In acetonitrile at 20℃; for 8.5h; Catalytic behavior; | 85% |
Conditions | Yield |
---|---|
With oxygen; potassium acetate; palladium diacetate; p-benzoquinone In N,N-dimethyl acetamide at 115℃; under 3800.26 Torr; for 15h; | 91% |
With oxygen; potassium acetate; p-benzoquinone; palladium diacetate In ISOPROPYLAMIDE at 115℃; under 3800.26 Torr; for 15h; Product distribution / selectivity; | 91% |
With [Fe(II)(N,N'-dimethyl-N,N'-bis(2-pyridylmethyl)-1,2-ethylenediamine)(CH3CN)2](ClO4)2; dihydrogen peroxide In water; acetonitrile at 20℃; Inert atmosphere; regioselective reaction; | 68 %Spectr. |
Conditions | Yield |
---|---|
With sodium perborate hexahydrate; hydroquinone; sodium nitrite In neat (no solvent) for 0.0333333h; Molecular sieve; Microwave irradiation; regioselective reaction; | 75% |
With potassium hydrogensulfate; potassium metaperiodate; silica gel; sodium nitrite In neat (no solvent) for 0.0833333h; Reagent/catalyst; Solvent; Microwave irradiation; | 69% |
With potassium hydrogensulfate; potassium metaperiodate; sodium nitrite In water; acetonitrile at 44.84℃; Kinetics; Temperature; |
2-hydroxy-4-nitro-benzoic acid methyl ester
4-nitro-benzoic acid
A
4-nitrobenzoic acid methyl ester
B
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
Stage #1: 4-nitro-benzoic acid With potassium carbonate In N,N-dimethyl acetamide at 90℃; for 0.5h; Stage #2: 2-hydroxy-4-nitro-benzoic acid methyl ester at 90℃; for 24h; | A 32% B n/a |
Conditions | Yield |
---|---|
With potassium permanganate |
7-nitro-4H-benzo[1,3]dioxine
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With potassium permanganate; acetic acid |
2-hydroxy-4-nitro-benzonitrile
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With sulfuric acid Siedetemperatur; | |
With hydrogenchloride at 160℃; Reinigung ueber das Barium-Salz; | |
With sulfuric acid; acetic acid Siedetemperatur; |
2-bromo-4-nitrobenzoic acid
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With barium dihydroxide; sodium hydroxide; copper (I) acetate |
2-methoxy-4-nitrobenzonitrile
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With sulfuric acid | |
With sulfuric acid; hydrogen bromide; acetic acid |
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With potassium carbonate |
Conditions | Yield |
---|---|
Diazotization; | |
With sulfuric acid; sodium nitrite Diazotization; |
2-(2-Hydroxy-4-nitro-benzoylamino)-2-methyl-propionic acid
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With sulfuric acid 1) reflux, 2) 3 deg C; Yield given; |
Conditions | Yield |
---|---|
With Tris-HCl buffer; water; calcium(II) ion; sodium chloride; Agkistrodon piscivorus piscivorus In acetonitrile at 37℃; Rate constant; pH = 8.0; |
hydrogenchloride
methyl 6-nitro-1,2-benzisoxazole-3-carboxylate
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
at 150℃; |
Conditions | Yield |
---|---|
With potassium carbonate at 210℃; under 29420.3 Torr; |
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With sulfuric acid; acetic acid |
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With hydrogenchloride at 150℃; |
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With potassium permanganate |
Conditions | Yield |
---|---|
at 160 - 170℃; |
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With sodium-; copper diacetate; magnesium oxide at 170℃; weiteres Reagens: Wasser; |
hydrogenchloride
2-hydroxy-4-nitro-benzohydroxamic acid
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
at 150℃; |
Conditions | Yield |
---|---|
With Streptomyces thioluteus para-aminobenzoate N-oxygenase |
2-(4-nitrobenzoylamino)isobutyric acid
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 1) Cu(0)/O2/trimethylamine N-oxide, 2) 0.5N HCl / 1) CH3CN, 75 deg C, 1.8h 2: 15percent aq. H2SO4 / 1) reflux, 2) 3 deg C View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 1) NaOH, 2) 5N HCl / 1) H2O/THF, a) 1 deg C, 2.5h, b) 20 deg C, 1h, 2) 0 deg C 2: 1) Cu(0)/O2/trimethylamine N-oxide, 2) 0.5N HCl / 1) CH3CN, 75 deg C, 1.8h 3: 15percent aq. H2SO4 / 1) reflux, 2) 3 deg C View Scheme |
4-nitro-2-phenoxybenzoic acid
2-hydroxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: HNO3 2: aqueous K2CO3 View Scheme |
2-hydroxy-4-nitrobenzoic acid
2-hydroxy-4-nitrobenzoyl chloride
Conditions | Yield |
---|---|
With thionyl chloride at 90℃; for 1h; | 100% |
With thionyl chloride In chloroform at 0℃; for 5h; Heating / reflux; | 75% |
With thionyl chloride; benzene |
2-hydroxy-4-nitrobenzoic acid
diazomethyl-trimethyl-silane
2-hydroxy-4-nitro-benzoic acid methyl ester
Conditions | Yield |
---|---|
In methanol; hexane; toluene at 20℃; for 1.25h; | 100% |
In methanol; hexane; toluene at 20℃; for 1.25h; | 100% |
Conditions | Yield |
---|---|
With sodium hydride In N,N-dimethyl-formamide at 20℃; for 1h; | 100% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 70℃; for 12h; | 100% |
2-hydroxy-4-nitrobenzoic acid
dimethyl sulfate
methyl 2-methoxy-4-nitrobenzoate
Conditions | Yield |
---|---|
With potassium carbonate for 4h; Reflux; | 99% |
With tetrabutylammomium bromide In dichloromethane for 10h; Ambient temperature; Yield given; |
methanol
2-hydroxy-4-nitrobenzoic acid
2-hydroxy-4-nitro-benzoic acid methyl ester
Conditions | Yield |
---|---|
With sulfuric acid at 65℃; for 96h; Inert atmosphere; | 98% |
With sulfuric acid for 12h; pH=<= 1; Reflux; | 98% |
With sulfuric acid at 70℃; | 96% |
2-hydroxy-4-nitrobenzoic acid
2-(hydroxymethyl)-5-nitrophenol
Conditions | Yield |
---|---|
With borane-THF In tetrahydrofuran at 0 - 23℃; for 18h; | 98% |
With borane-THF | 98% |
With dimethylsulfide borane complex In tetrahydrofuran at 20℃; for 16h; Cooling with ice; | 97.5% |
Conditions | Yield |
---|---|
Stage #1: 2-hydroxy-4-nitrobenzoic acid With thionyl chloride In methanol Stage #2: With hydrogen; palladium 10% on activated carbon In ethyl acetate | 98% |
Multi-step reaction with 2 steps 1: 95 percent / SOCl2 2: 98 percent / H2 / Pd/C / ethyl acetate View Scheme | |
Multi-step reaction with 2 steps 1: nickel-aluminium-alloy; aq. NaOH solution 2: sulfuric acid View Scheme |
2-hydroxy-4-nitrobenzoic acid
ethyl iodide
2-ethoxy-4-nitro-benzoic acid ethyl ester
Conditions | Yield |
---|---|
With potassium carbonate In butanone at 80℃; for 16h; | 97% |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; |
2-hydroxy-4-nitrobenzoic acid
2-hydroxy-4-nitro-benzoic acid methyl ester
Conditions | Yield |
---|---|
With thionyl chloride In methanol at 0℃; for 6h; Reflux; | 97% |
With sulfuric acid In methanol |
Conditions | Yield |
---|---|
With caesium carbonate In N,N-dimethyl-formamide | 97% |
Conditions | Yield |
---|---|
With aminomethyl polystyrene resin formic acid salt; zinc In methanol at 20℃; for 2h; | 96% |
With ammoniummethyl polystyrene resin formate; palladium on activated charcoal In methanol at 20℃; for 5h; | 95% |
With polymer-supported formate; magnesium In methanol at 20℃; for 3h; | 94% |
diazomethane
2-hydroxy-4-nitrobenzoic acid
methyl 2-methoxy-4-nitrobenzoate
Conditions | Yield |
---|---|
In diethyl ether at 20℃; for 4h; Methylation; | 96% |
2-hydroxy-4-nitrobenzoic acid
allyl bromide
2-allyloxy-4-nitrobenzoic acid allyl ester
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 12h; Inert atmosphere; | 90% |
With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 22h; | 90% |
Stage #1: 2-hydroxy-4-nitrobenzoic acid With sodium hydride In N,N-dimethyl-formamide at 20℃; for 0.333333h; Stage #2: allyl bromide In N,N-dimethyl-formamide at 20℃; for 16h; | 76% |
Stage #1: 2-hydroxy-4-nitrobenzoic acid With sodium hydride In DMF (N,N-dimethyl-formamide) at 20℃; for 0.333333h; Stage #2: allyl bromide In DMF (N,N-dimethyl-formamide) at 20℃; for 16h; Stage #3: With hydrogenchloride In DMF (N,N-dimethyl-formamide); water |
2-hydroxy-4-nitrobenzoic acid
methyl iodide
2-hydroxy-4-nitro-benzoic acid methyl ester
Conditions | Yield |
---|---|
Stage #1: 2-hydroxy-4-nitrobenzoic acid With potassium hydrogencarbonate In N,N-dimethyl-formamide at 20℃; for 0.166667h; Inert atmosphere; Stage #2: methyl iodide In N,N-dimethyl-formamide at 20℃; for 6h; Time; | 90% |
With 1,8-diazabicyclo[5.4.0]undec-7-ene In acetonitrile at 20℃; for 1h; | 84% |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 40℃; for 8h; | 90% |
ethanol
2-hydroxy-4-nitrobenzoic acid
2-hydroxy-4-nitro-benzoic acid ethyl ester
Conditions | Yield |
---|---|
With thionyl chloride at 0 - 20℃; Product distribution / selectivity; Heating / reflux; | 89% |
With thionyl chloride Reflux; |
Conditions | Yield |
---|---|
With manganese(IV) oxide | 88% |
Multi-step reaction with 2 steps 1: B2H6 / tetrahydrofuran 2: MnO2 / CHCl3 / Heating View Scheme | |
Multi-step reaction with 4 steps 1: potassium carbonate / 4 h / Reflux 2: diisobutylaluminium hydride / tetrahydrofuran / 1 h / 0 °C 3: dipyridinium dichromate / dichloromethane / 3 h / 40 °C 4: phosphorus tribromide / dichloromethane / 4 h / -78 - 20 °C View Scheme |
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 16h; Inert atmosphere; | 88% |
Conditions | Yield |
---|---|
Stage #1: 2-hydroxy-4-nitrobenzoic acid With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane at 0 - 20℃; for 1.5h; Stage #2: dimethyl amine In dichloromethane | 88% |
Stage #1: 2-hydroxy-4-nitrobenzoic acid With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In dichloromethane at 20℃; for 1.5h; Stage #2: dimethyl amine In dichloromethane at 20℃; | 71% |
2-hydroxy-4-nitrobenzoic acid
2-acetoxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With dmap; acetic anhydride; triethylamine In ethyl acetate at 80℃; | 87% |
2-hydroxy-4-nitrobenzoic acid
tert-butyl alcohol
tert-butyl 2-hydroxy-4-nitrobenzoate
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In tetrahydrofuran at 20℃; for 20h; Inert atmosphere; | 87% |
With dmap; dicyclohexyl-carbodiimide In tetrahydrofuran Reflux; | 81.7% |
With dmap; dicyclohexyl-carbodiimide In tetrahydrofuran at 60℃; | 73% |
With benzotriazol-1-ol; N-(3-dimethylaminopropyl)-N-ethylcarbodiimide; triethylamine In tert-butyl alcohol at 10 - 35℃; | 2.3 g |
2-hydroxy-4-nitrobenzoic acid
isopropyl alcohol
2-isopropoxy-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With sodium hydroxide In methanol at 100℃; for 2h; | 87% |
2-hydroxy-4-nitrobenzoic acid
benzyl bromide
2-(benzyloxy)-4-nitrobenzoic acid
Conditions | Yield |
---|---|
With potassium carbonate In N,N-dimethyl-formamide at 80℃; for 16h; Inert atmosphere; | 83% |
Conditions | Yield |
---|---|
With phosphorus trichloride Microwave irradiation; Reflux; | 83% |
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