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57848-46-1

Basic Information
CAS No.: 57848-46-1
Name: 4-Bromo-2-fluorobenzaldehyde
Article Data: 10
Molecular Structure:
Molecular Structure of 57848-46-1 (4-Bromo-2-fluorobenzaldehyde)
Formula: C7H4BrFO
Molecular Weight: 203.011
Synonyms: 4-bromo-2-fluoro-benzaldehyde;2-fluoro-4-bromobenzaldehyde;2-bromo-4-fluorobenzaldehyde;
EINECS: 298-056-6
Density: 1.67 g/cm3
Melting Point: 59-64 °C
Boiling Point: 241.4 °C at 760 mmHg
Flash Point: 99.8 °C
Solubility: Insoluble in water
Appearance: light yellow to beige crystalline crystals
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 37/39-26-36
PSA: 17.07000
LogP: 2.40070
Synthetic route
1435-52-5

2,5-dibromofluorobenzene

68-12-2, 33513-42-7

N,N-dimethyl-formamide

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
Stage #1: 2,5-dibromofluorobenzene With tri-n-butyllithium magnesate complex In tetrahydrofuran; toluene at 0℃; for 1h;
Stage #2: N,N-dimethyl-formamide In toluene at 0℃; for 0.5h;
Stage #3: With citric acid at 20℃;
92%
Stage #1: 2,5-dibromofluorobenzene With n-butyllithium In diethyl ether at -100℃; for 0.75h;
Stage #2: N,N-dimethyl-formamide In diethyl ether at -90℃; for 0.25h;
Stage #3: With sulfuric acid In diethyl ether; water at -50℃;
86%
Stage #1: 2,5-dibromofluorobenzene With isopropylmagnesium bromide In tetrahydrofuran at 0 - 5℃; for 1.5h;
Stage #2: N,N-dimethyl-formamide In tetrahydrofuran; toluene at 0 - 5℃; for 4h;
Stage #3: With acetic acid In tetrahydrofuran; water; toluene at 0 - 10℃;
188582-62-9

4-bromo-2-fluorobenzyl alcohol

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
With tert.-butylhydroperoxide; tetrabutylammomium bromide In decane; benzene at 40℃; for 24h; Inert atmosphere; Sealed tube; chemoselective reaction;87%
aqueous sodium hydrogen sulfite

aqueous sodium hydrogen sulfite

1435-52-5

2,5-dibromofluorobenzene

693-04-9

butyl magnesium bromide

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
With n-butyllithium; acetic acid In tetrahydrofuran; hexane; N,N-dimethyl-formamide; toluene82%
222978-01-0

4-bromo-3-fluorobenzyl alcohol

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
With sodium acetate; pyridinium chlorochromate In dichloromethane at 20℃; for 2h;63%
With sodium acetate; pyridinium chlorochromate In dichloromethane at 20℃; for 2h; light protection;63%
877129-98-1

N-(4-bromo-2-fluoro-benzyl)-acetamide

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
With N-Bromosuccinimide In chloroform at 20℃; for 18h;51%
conc sulphuric acid

conc sulphuric acid

51436-99-8

2-fluoro-4-bromotoluene

7664-93-9

sulfuric acid

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
With acetic anhydride In ethanol; water; acetic acid
202865-64-3

4-bromo-2-fluorobenzaldehyde oxime

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
With acetic anhydride In ethanol at 140℃;
1073-06-9

3-fluorobromobenzene

68-12-2, 33513-42-7

N,N-dimethyl-formamide

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
Stage #1: 3-fluorobromobenzene With lithium diisopropyl amide In tetrahydrofuran at -78℃;
Stage #2: N,N-dimethyl-formamide In tetrahydrofuran
153556-42-4

4-bromo-3-fluorobenzoic acid

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium tetrahydroborate; boron trifluoride diethyl etherate / tetrahydrofuran / 2 h / 20 °C
2: sodium acetate; pyridinium chlorochromate / dichloromethane / 2 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: sodium tetrahydroborate; boron trifluoride diethyl etherate / tetrahydrofuran / 2 h / 20 °C / Cooling with ice
2: sodium acetate; pyridinium chlorochromate / dichloromethane / 2 h / 20 °C / light protection
View Scheme
452-74-4

4-bromo-3-fluorotoluene

57848-46-1

4-bromo-2-fluorobenzaldehyde

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: pyridine; water; potassium permanganate / 3 h / 90 °C
1.3: pH 2
2.1: sodium tetrahydroborate; boron trifluoride diethyl etherate / tetrahydrofuran / 2 h / 20 °C
3.1: sodium acetate; pyridinium chlorochromate / dichloromethane / 2 h / 20 °C
View Scheme
Multi-step reaction with 3 steps
1.1: potassium permanganate / pyridine; water / 3 h / 90 °C
1.2: pH 2
1.3: pH 2
2.1: sodium tetrahydroborate; boron trifluoride diethyl etherate / tetrahydrofuran / 2 h / 20 °C / Cooling with ice
3.1: sodium acetate; pyridinium chlorochromate / dichloromethane / 2 h / 20 °C / light protection
View Scheme
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Chemistry

Structure of 4-Bromo-2-Fluorobenzaldehyde (CAS NO.57848-46-1):

IUPAC Name: 4-bromo-2-fluorobenzaldehyde 
Empirical Formula: C7H4BrFO
Molecular Weight: 203.0085 
Index of Refraction: 1.584
Molar Refractivity: 40.68 cm3
Molar Volume: 121.4 cm3
Polarizability: 16.13×10-24cm3
Surface Tension: 42.3 dyne/cm
Density: 1.67 g/cm3
Flash Point: 99.8 °C
Enthalpy of Vaporization: 47.84 kJ/mol 
Melting Point: 59-64 °C
Boiling Point: 241.4 °C at 760 mmHg
Vapour Pressure: 0.036 mmHg at 25°C 
Water Solubility: INSOLUBLE
Sensitive: Air Sensitive 
Physical Appearance: light yellow to beige crystal
Product Categories: Fluorin-contained benzaldehyde series;FINE Chemical & INTERMEDIATES;Fluorobenzene;Aromatic Aldehydes & Derivatives (substituted);Benzene series;Benzaldehyde;Miscellaneous;Adehydes, Acetals & Ketones;Bromine Compounds;Fluorine Compounds;Benzaldehyde (Building Blocks for Liquid Crystals);Building Blocks for Liquid Crystals;Functional Materials;Aldehydes;C7;Carbonyl Compounds

Uses

 4-Bromo-2-Fluorobenzaldehyde (CAS NO.57848-46-1) is used as intermediates in synthesis pharmaceutical and pesticide .

Safety Profile

Hazard Codes: IrritantXi
Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 37/39-26-36 
S37/39:Wear suitable gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
Hazard Note: Irritant
HazardClass: IRRITANT, AIR SENSITIVE

Specification

 4-Bromo-2-Fluorobenzaldehyde , its cas register number is 57848-46-1. It also can be called Benzaldehyde, 4-bromo-2-fluoro- ; 2-Fluoro-4-bromobenzaldehyde ; 4-Bromo-2-Fluorobenzaldehyde2-Fluoro-4-Bromobenzaldehyde .