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CAS No.: | 303-38-8 |
---|---|
Name: | 2,3-Dihydroxybenzoic acid |
Article Data: | 65 |
Molecular Structure: | |
Formula: | C7H6O4 |
Molecular Weight: | 154.122 |
Synonyms: | o-Pyrocatechuicacid (6CI,8CI);1,2-Dihydroxybenzene-3-carboxylic acid;3-Hydroxysalicylic acid;DHBA;NSC 27435;Pyrocatechuic acid; |
EINECS: | 206-139-5 |
Density: | 1.559 g/cm3 |
Melting Point: | 204-206 °C(lit.) |
Boiling Point: | 362.5 °C at 760 mmHg |
Flash Point: | 187.2 °C |
Solubility: | Soluble in water, methanol and dimethyl sulfoxide. |
Appearance: | pale brownish to red brownish crystalline powder |
Hazard Symbols: | Xi |
Risk Codes: | 36/37/38 |
Safety: | 26-36-37/39 |
PSA: | 77.76000 |
LogP: | 0.79600 |
2,3-dihydroxybenzaldehyde
2,3-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With dihydrogen peroxide In water; acetonitrile at 45℃; for 12h; chemoselective reaction; | 82% |
Conditions | Yield |
---|---|
With lithium hydroxide In ethanol; water at 25℃; for 2h; | 71% |
benzoic acid
A
2,3-Dihydroxybenzoic acid
B
2,5-dihydroxybenzoic acid.
C
3-Carboxyphenol
D
salicylic acid
E
4-hydroxy-benzoic acid
Conditions | Yield |
---|---|
With oxygen; iron(II) sulfate In water at 40℃; for 3h; Product distribution; pH 6.8 buffer; | A 9% B 5% C 14% D 4% E 9% |
benzoic acid
A
2,3-Dihydroxybenzoic acid
B
2,5-dihydroxybenzoic acid.
C
3-Carboxyphenol
D
4-hydroxy-benzoic acid
Conditions | Yield |
---|---|
With oxygen; iron(II) sulfate In water at 40℃; for 3h; Further byproducts given; | A 9% B 5% C 14% D 9% |
Conditions | Yield |
---|---|
With sodium hydroxide; dihydrogen peroxide |
Conditions | Yield |
---|---|
With potassium carbonate beim Schmelzen; |
Conditions | Yield |
---|---|
With aluminium trichloride; chlorobenzene | |
With hydrogenchloride at 140℃; im Rohr; | |
With aluminium trichloride at 150℃; | |
With hydrogen bromide at 110 - 120℃; |
Conditions | Yield |
---|---|
With hydrogen iodide at 100℃; | |
Multi-step reaction with 5 steps 1: N,N-dimethyl-formamide; thionyl chloride / dichloromethane / 2 h / 30 - 35 °C 2: ammonium hydroxide / dichloromethane; water / 0.5 h / -5 - 35 °C 3: trichlorophosphate / toluene / 30 - 85 °C 4: triethylamine; aluminum (III) chloride / toluene / 9.5 h / 30 - 75 °C 5: water; hydrogenchloride / toluene / 0.5 h / 15 - 35 °C View Scheme |
2-iodo-3-hydroxybenzaldehyde
2,3-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
at 100℃; |
3-(benzyloxy)-2-hydroxybenzoic acid
2,3-Dihydroxybenzoic acid
Conditions | Yield |
---|---|
With hydrogen bromide at 100 - 110℃; |
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