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inquiryProduct Name 3,3'-Dihydroxybenzidine Abbreviation HAB Cas No. 2373-98-0 Appearance Off-white powder Purity ≥99% Molecular formula Appearance:Off-white powder Storag
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inquiryProduct Name: 3,3'-Dihydroxybenzidine Synonyms: Dihydroxybenzidine;2-amino-5-(4-amino-3-hydroxyphenyl)phenol;3,3-DIHYDROXYBENZIDINE 98+%;4,4'-Diamino-3,3'-biphenyldiol;4,4'-Diaminobiphenyl-3,3'-diol;3,3'-Dihydroxybiphenyl
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Product name: 3,3’-Dihydroxybenzidine CAS No.:2373-98-0 Molecule Formula:C12H12N2O2 Molecule Weight:216.23 Purity: 99% Package: 25kg/drum Description:White powder Manufacture Standards:Enterprise Standard TESTING ITEMS
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inquiryProduct Name 3,3'-Dihydroxybenzidine CAS No 2373-98-0 Structural formula Molecular formula
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inquiryWe 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. Specification : 3,3'-Dihydroxybenzidine CAS
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high purity,in stock Package:25kg/drum,or as per customers'demand Application:API,or Intermediates,fine chemicals Transportation:air,sea,courier
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
With sodium tetrahydroborate; nickel(II) chloride hexahydrate In tetrahydrofuran for 2h; Cooling with ice; | 97.4% |
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
Stage #1: C14H8N2O4 With ammonium hydroxide at 100 - 110℃; under 750.075 - 2250.23 Torr; Large scale; Stage #2: With sulfuric acid at 20 - 70℃; pH=3-4; Large scale; | 89.9% |
Conditions | Yield |
---|---|
With hydrogen iodide at 138℃; | |
With potassium hydroxide at 230 - 240℃; under 22065.2 - 29420.3 Torr; |
3,3'-dimethoxy-(1,1'-biphenyl)-4,4'-diamine
A
3,3'-dihydroxybenzidine
B
4,4'-diamino-3'-methoxy-biphenyl-3-ol
Conditions | Yield |
---|---|
With sulfuric acid |
Conditions | Yield |
---|---|
With sodium hydroxide at 230 - 240℃; under 22065.2 - 29420.3 Torr; |
3,3'-bis-sulfooxy-benzidine
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
With hydrogenchloride | |
With hydrogenchloride | |
With sulfuric acid |
hydrogenchloride
3,3'-bis-sulfooxy-benzidine
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1.1: triethylamine / 1,2-dichloro-ethane / 65 - 75 °C / Large scale 2.1: hydrogen; platinum on activated charcoal / 1,2-dichloro-ethane / 55 - 65 °C / 4500.45 - 6000.6 Torr / Large scale 3.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 4.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 5.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 6.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 6.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 7 steps 1.1: palladium on activated charcoal; hydrogen / 1,2-dichloro-ethane / 35 - 40 °C / 1500.15 - 4500.45 Torr / Large scale 2.1: triethylamine / 1,2-dichloro-ethane / 65 - 75 °C / Large scale 3.1: hydrogen; platinum on activated charcoal / 1,2-dichloro-ethane / 55 - 65 °C / 4500.45 - 6000.6 Torr / Large scale 4.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 5.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 6.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 7.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 7.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
4-nitrobenzo[d]oxazol-2(3H)-one
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: hydrogen; platinum on activated charcoal / 1,2-dichloro-ethane / 55 - 65 °C / 4500.45 - 6000.6 Torr / Large scale 2.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 3.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 4.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 5.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 5.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
4-amino-2-benzoxazolone
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 2.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 3.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 4.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 4.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 2.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 3.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 3.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 8 steps 1.1: water / 50 - 85 °C / Alkaline conditions; Large scale 1.2: pH 1 / Large scale 2.1: palladium on activated charcoal; hydrogen / 1,2-dichloro-ethane / 35 - 40 °C / 1500.15 - 4500.45 Torr / Large scale 3.1: triethylamine / 1,2-dichloro-ethane / 65 - 75 °C / Large scale 4.1: hydrogen; platinum on activated charcoal / 1,2-dichloro-ethane / 55 - 65 °C / 4500.45 - 6000.6 Torr / Large scale 5.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 6.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 7.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 8.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 8.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
Conditions | Yield |
---|---|
In 1,4-dioxane for 17h; Heating; | 100% |
3,3'-dihydroxybenzidine
orthoformic acid triethyl ester
6,6'-bisbenzoxazole
Conditions | Yield |
---|---|
for 48h; Heating; | 100% |
Conditions | Yield |
---|---|
With calcium hydride In tetrahydrofuran for 48h; Inert atmosphere; Reflux; | 98.2% |
Conditions | Yield |
---|---|
With calcium hydride In tetrahydrofuran for 48h; Inert atmosphere; Reflux; | 98.2% |
Conditions | Yield |
---|---|
With sodium hydride In tetrahydrofuran for 48h; Inert atmosphere; Reflux; | 98.2% |
Conditions | Yield |
---|---|
In acetone for 12h; Inert atmosphere; | 96.5% |
Conditions | Yield |
---|---|
With isoquinoline In 1-methyl-pyrrolidin-2-one at 170℃; for 2h; | 96% |
With isoquinoline In 1-methyl-pyrrolidin-2-one at 170℃; for 2h; | 91.4% |
Stage #1: phthalic anhydride; 3,3'-dihydroxybenzidine In 1-methyl-pyrrolidin-2-one Inert atmosphere; Stage #2: With isoquinoline In 1-methyl-pyrrolidin-2-one at 170℃; for 2h; | 86% |
With isoquinoline In 1-methyl-pyrrolidin-2-one at 170℃; for 2h; Inert atmosphere; Schlenk technique; | |
With isoquinoline In 1-methyl-pyrrolidin-2-one at 120℃; for 6h; |
3,3'-dihydroxybenzidine
N-bis-(methylsulfanylmethylene)benzenesulfonamide
2,2'-bis(phenylsulfonylamino)-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
With sodium hydroxide In N,N-dimethyl-formamide | 95% |
Stage #1: 3,3'-dihydroxybenzidine With sodium hydroxide In N,N-dimethyl-formamide at 20℃; for 0.5h; Stage #2: N-bis-(methylsulfanylmethylene)benzenesulfonamide In N,N-dimethyl-formamide for 8h; Reflux; Inert atmosphere; | 80% |
Conditions | Yield |
---|---|
With sodium carbonate In tetrahydrofuran for 8h; Inert atmosphere; Reflux; | 93.8% |
Conditions | Yield |
---|---|
With potassium carbonate In tetrahydrofuran for 24h; Inert atmosphere; Reflux; | 93.7% |
Conditions | Yield |
---|---|
In ethanol at 78℃; for 6h; | 93% |
tert-butylisonitrile
3,3'-dihydroxybenzidine
N3,N3'-di-tert-butyl-2,2'-bis(tert-butylimino)-2H,2'H-[7,7'-bibenzo[b][1,4]oxazine]-3,3'-diamine
Conditions | Yield |
---|---|
With palladium dichloride In 1,4-dioxane at 50℃; for 2h; | 89% |
C18H12F12N2O3
3,3'-dihydroxybenzidine
benzene-1,3-dicarbonyl dichloride
Conditions | Yield |
---|---|
In N,N-dimethyl acetamide at 20℃; for 5h; | 87% |
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
With sodium tetrahydroborate; nickel(II) chloride hexahydrate In tetrahydrofuran for 2h; Cooling with ice; | 97.4% |
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
Stage #1: C14H8N2O4 With ammonium hydroxide at 100 - 110℃; under 750.075 - 2250.23 Torr; Large scale; Stage #2: With sulfuric acid at 20 - 70℃; pH=3-4; Large scale; | 89.9% |
Conditions | Yield |
---|---|
With hydrogen iodide at 138℃; | |
With potassium hydroxide at 230 - 240℃; under 22065.2 - 29420.3 Torr; |
3,3'-dimethoxy-(1,1'-biphenyl)-4,4'-diamine
A
3,3'-dihydroxybenzidine
B
4,4'-diamino-3'-methoxy-biphenyl-3-ol
Conditions | Yield |
---|---|
With sulfuric acid |
Conditions | Yield |
---|---|
With sodium hydroxide at 230 - 240℃; under 22065.2 - 29420.3 Torr; |
3,3'-bis-sulfooxy-benzidine
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
With hydrogenchloride | |
With hydrogenchloride | |
With sulfuric acid |
hydrogenchloride
3,3'-bis-sulfooxy-benzidine
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1.1: triethylamine / 1,2-dichloro-ethane / 65 - 75 °C / Large scale 2.1: hydrogen; platinum on activated charcoal / 1,2-dichloro-ethane / 55 - 65 °C / 4500.45 - 6000.6 Torr / Large scale 3.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 4.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 5.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 6.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 6.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 7 steps 1.1: palladium on activated charcoal; hydrogen / 1,2-dichloro-ethane / 35 - 40 °C / 1500.15 - 4500.45 Torr / Large scale 2.1: triethylamine / 1,2-dichloro-ethane / 65 - 75 °C / Large scale 3.1: hydrogen; platinum on activated charcoal / 1,2-dichloro-ethane / 55 - 65 °C / 4500.45 - 6000.6 Torr / Large scale 4.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 5.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 6.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 7.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 7.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
4-nitrobenzo[d]oxazol-2(3H)-one
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1.1: hydrogen; platinum on activated charcoal / 1,2-dichloro-ethane / 55 - 65 °C / 4500.45 - 6000.6 Torr / Large scale 2.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 3.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 4.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 5.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 5.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
4-amino-2-benzoxazolone
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 2.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 3.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 4.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 4.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 2.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 3.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 3.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
Conditions | Yield |
---|---|
Multi-step reaction with 8 steps 1.1: water / 50 - 85 °C / Alkaline conditions; Large scale 1.2: pH 1 / Large scale 2.1: palladium on activated charcoal; hydrogen / 1,2-dichloro-ethane / 35 - 40 °C / 1500.15 - 4500.45 Torr / Large scale 3.1: triethylamine / 1,2-dichloro-ethane / 65 - 75 °C / Large scale 4.1: hydrogen; platinum on activated charcoal / 1,2-dichloro-ethane / 55 - 65 °C / 4500.45 - 6000.6 Torr / Large scale 5.1: sulfuric acid; sodium nitrite; copper(II) sulfate / isopropyl alcohol; ethyl acetate / Heating; Large scale 6.1: sulfuric acid; sodium iodide; dihydrogen peroxide / methanol / 34 - 38 °C / Large scale 7.1: palladium on activated charcoal; triethylamine / toluene / Heating; Large scale 8.1: ammonium hydroxide / 100 - 110 °C / 750.08 - 2250.23 Torr / Large scale 8.2: 20 - 70 °C / pH 3-4 / Large scale View Scheme |
Conditions | Yield |
---|---|
With hydrogenchloride; sodium hydroxide In water for 2h; Skraup, Doebner-Miller Synthesis; Reflux; | 34% |
3,3'-dihydroxybenzidine
Conditions | Yield |
---|---|
With potassium cyanide; phenylboronic acid In methanol at 20℃; Inert atmosphere; | 43% |
3,3'-dihydroxybenzidine
methyl N-phenyldithiocarbamate
2,2'-bis(phenylamino)-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
With mercury(II) oxide In N,N-dimethyl-formamide for 8h; Heating; | 48% |
3,3'-dihydroxybenzidine
methyl N-(4-methoxyphenyl)dithiocarbamate
2,2'-bis(4-methoxyphenylamino)-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
With mercury(II) oxide In N,N-dimethyl-formamide | 50% |
3,3'-dihydroxybenzidine
C12H14N2S3
Conditions | Yield |
---|---|
With sodium hydroxide In N,N-dimethyl-formamide | 58% |
3,3'-dihydroxybenzidine
N-(4-chlorophenyl)-S-methyldithiocarbamate
2,2'-bis(4-chlorophenylamino)-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
With mercury(II) oxide In N,N-dimethyl-formamide | 60% |
3,3'-dihydroxybenzidine
methyl (N-(4-methylphenyl))dithiocarbamate
2,2'-bis(4-tolylamino)-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
With mercury(II) oxide In N,N-dimethyl-formamide | 63% |
3,3'-dihydroxybenzidine
benzoyl chloride
2,2'-diphenyl-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
Stage #1: 3,3'-dihydroxybenzidine; benzoyl chloride In 1-methyl-pyrrolidin-2-one at 0℃; for 1h; Inert atmosphere; Stage #2: With pyridine In 1-methyl-pyrrolidin-2-one for 2h; Inert atmosphere; Reflux; | 65% |
3,3'-dihydroxybenzidine
4-fluorobenzenesulfonic acid sodium salt
3,3'-bis(4-sulfophenoxy)benzidine
Conditions | Yield |
---|---|
With potassium carbonate In 1-methyl-pyrrolidin-2-one; toluene at 20 - 170℃; for 28.5h; Inert atmosphere; | 65% |
3,3'-dihydroxybenzidine
dimethyl N-(1,3-benzothiazol-2-yl) dithio imidocarbonate
2,2'-bis(2-benzothiazolylamino)-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
With sodium hydroxide In N,N-dimethyl-formamide for 9h; Heating; | 68% |
3,3'-dihydroxybenzidine
N-p-Bromphenylsulfonyliminodithiokohlensaeuredimethylester
C26H16Br2N4O6S2
Conditions | Yield |
---|---|
Stage #1: 3,3'-dihydroxybenzidine With sodium hydroxide In N,N-dimethyl-formamide at 20℃; for 0.5h; Stage #2: N-p-Bromphenylsulfonyliminodithiokohlensaeuredimethylester In N,N-dimethyl-formamide for 8h; Reflux; Inert atmosphere; | 70% |
3,3'-dihydroxybenzidine
dimethyl N-<(2-chlorophenyl)sulfonyl>dithiocarbonimidate
C26H16Cl2N4O6S2
Conditions | Yield |
---|---|
Stage #1: 3,3'-dihydroxybenzidine With sodium hydroxide In N,N-dimethyl-formamide at 20℃; for 0.5h; Stage #2: dimethyl N-<(2-chlorophenyl)sulfonyl>dithiocarbonimidate In N,N-dimethyl-formamide for 8h; Reflux; Inert atmosphere; | 72% |
3,3'-dihydroxybenzidine
4-methyl-benzoyl chloride
2,2'-di-p-tolyl-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
Stage #1: 3,3'-dihydroxybenzidine; 4-methyl-benzoyl chloride In 1-methyl-pyrrolidin-2-one at 0℃; for 1h; Inert atmosphere; Stage #2: With pyridine In 1-methyl-pyrrolidin-2-one for 2h; Inert atmosphere; Reflux; | 72% |
3,3'-dihydroxybenzidine
N-[bis(methylthio)methylene]-p-toluenesulfonamide
2,2'-bis(tosylamino)-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
With sodium hydroxide In N,N-dimethyl-formamide | 73% |
Stage #1: 3,3'-dihydroxybenzidine With sodium hydroxide In N,N-dimethyl-formamide at 20℃; for 0.5h; Stage #2: N-[bis(methylthio)methylene]-p-toluenesulfonamide In N,N-dimethyl-formamide for 8h; Reflux; Inert atmosphere; | 70% |
N--4-chlorobenzenesulfonamide
3,3'-dihydroxybenzidine
2,2'-bis(4-chlorophenylsulfonylamino)-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
Stage #1: 3,3'-dihydroxybenzidine With sodium hydroxide In N,N-dimethyl-formamide at 20℃; for 0.5h; Stage #2: N--4-chlorobenzenesulfonamide In N,N-dimethyl-formamide for 8h; Reflux; Inert atmosphere; | 75% |
With sodium hydroxide In N,N-dimethyl-formamide | 73% |
3,3'-dihydroxybenzidine
C10H9N3O2S3
2,2'-bis(6-nitro-2-benzothiazolylamino)-6,6'-bibenzoxazole
Conditions | Yield |
---|---|
With sodium hydroxide In N,N-dimethyl-formamide | 75% |
3,3'-dihydroxybenzidine
N--2-methylbenzenesulfonamide
C28H22N4O6S2
Conditions | Yield |
---|---|
Stage #1: 3,3'-dihydroxybenzidine With sodium hydroxide In N,N-dimethyl-formamide at 20℃; for 0.5h; Stage #2: N--2-methylbenzenesulfonamide In N,N-dimethyl-formamide for 8h; Reflux; Inert atmosphere; | 75% |
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