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CAS No.: | 7697-28-1 |
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Name: | 4-Bromo-3-methylbenzoic acid |
Article Data: | 19 |
Cas Database | |
Molecular Structure: | |
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Formula: | C8H7BrO2 |
Molecular Weight: | 215.046 |
Synonyms: | m-Toluicacid, 4-bromo- (6CI,8CI);Benzoicacid, 4-bromo-3-methyl-;4-Bromo-3-methylbenzoicacid;3-Methyl-4-bromobenzoic acid; |
EINECS: | 231-713-7 |
Density: | 1.599 g/cm3 |
Melting Point: | 212-216 °C(lit.) |
Boiling Point: | 311.4 °C at 760 mmHg |
Flash Point: | 142.1 °C |
Appearance: | White or reddish crystal powder |
Hazard Symbols: |
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Risk Codes: | 36/37/38 |
Safety: | 26-36 |
PSA: | 37.30000 |
LogP: | 2.45570 |
Conditions | Yield |
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Stage #1: 4-amino 3-methylbenzoic acid With hydrogen bromide In water at 25℃; for 1h; Stage #2: With sodium nitrate In water at -2 - -1℃; for 1.75h; Stage #3: With hydrogen bromide; copper(I) bromide In water at -2 - 70℃; for 2h; | 90% |
Diazotization.Kochen der Diazoverbindung mit Bromwasserstoffsaeure; | |
With hydrogen bromide; sodium nitrite; copper(I) chloride In water |
4,4'-dibromo-5,3'-dimethyl-2-nitrodiphenylmethane
A
4-bromo-3-methylbenzoic acid
B
6-bromo-5-methyl-3-(4'-bromo-3'-methylphenyl)-2,1-isoxazole
C
3,6-dibromo-2,7-dimethylacridone
Conditions | Yield |
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With sulfuric acid In ethanol for 5h; Irradiation; | A 63% B 20% C 6% |
With sulfuric acid In ethanol for 5h; Product distribution; Mechanism; Irradiation; | A 51% B 20% C 6% |
4-bromo-3-methyl-N-(2-methyl-4-cyanophenyl)benzamide
A
4-bromo-3-methylbenzoic acid
B
4-amino-3-methylbenzonitrile
Conditions | Yield |
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With potassium hydroxide In ethanol a) 70 deg C, 4.5 h, b) 80 deg C, 3 h; Yields of byproduct given; | A 63% B n/a |
With potassium hydroxide In ethanol a) 70 deg C, 4.5 h, b) 80 deg C, 3 h; Yield given; | A 63% B n/a |
Conditions | Yield |
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With nitric acid | 60% |
With nitric acid for 24h; Heating / reflux; | 60% |
With nitric acid at 150℃; | |
With nitric acid |
n-butyllithium
1,4-dibromo-2-methylbenzene
4-bromo-3-methylbenzoic acid
Conditions | Yield |
---|---|
With diethyl ether Aufgiessen des Reaktionsgemisches auf festes Kohlendioxid; |
1,4-dibromo-2-methylbenzene
A
2-methylterephthalic acid
B
4-bromo-3-methylbenzoic acid
Conditions | Yield |
---|---|
With n-butyllithium; Petroleum ether anschliessendes Behandeln mit festem Kohlendioxid; |
1-bromo-4-isopropyl-2-methyl-benzene
4-bromo-3-methylbenzoic acid
Conditions | Yield |
---|---|
With nitric acid |
1-(4-bromo-3-methylphenyl)ethan-1-one
A
4-bromo-isophthalic acid
B
4-bromo-3-methylbenzoic acid
Conditions | Yield |
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With potassium permanganate | |
With alkaline potassium permanganate |
Conditions | Yield |
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With bromine |
Conditions | Yield |
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(i) NaNO2, aq. HCl, (ii) /BRN= 3587244/, (iii) NaOH, EtOH; Multistep reaction; |
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Molecular Structure:
Molecular Formula: C8H7BrO2
Molecular Weight: 215.044
IUPAC Name: 4-Bromo-3-methylbenzoic acid
Synonyms of 3-Methyl-4-bromobenzoic acid (CAS NO.7697-28-1): EINECS 231-713-7 ; 4-Bromo-3-methylbenzoic acid
CAS NO: 7697-28-1
Product Categories: blocks ; Bromides ; Carboxes ; Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts ; Benzoic acid ; Organic acids ; Acids & Esters ; Bromine Compounds ; C8 ; Carbonyl Compounds ; Carboxylic Acids
Melting Point: 212-216 °C
Index of Refraction: 1.595
Molar Refractivity: 45.69 cm3
Molar Volume: 134.4 cm3
Surface Tension: 50 dyne/cm
Density: 1.599 g/cm3
Flash Point: 142.1 °C
Enthalpy of Vaporization: 58.31 kJ/mol
Boiling Point: 311.4 °C at 760 mmHg
Vapour Pressure: 0.000243 mmHg at 25°C
3-Methyl-4-bromobenzoic acid (CAS NO.7697-28-1) is used as a pharmaceutical intermediate.
Safety Information of 3-Methyl-4-bromobenzoic acid (CAS NO.7697-28-1):
Hazard Codes:Xi
Risk Statements:36/37/38
36/37/38:Irritating to eyes, respiratory system and skin
Safety Statements:26-36
26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
36:Wear suitable protective clothing
WGK Germany:3
Hazard Note:Irritant