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4-Bromo-2-fluorobenzyl bromide

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Name

4-Bromo-2-fluorobenzyl bromide

EINECS 278-412-7
CAS No. 76283-09-5 Density 1.923 g/cm3
PSA 0.00000 LogP 3.48310
Solubility N/A Melting Point 33-36 °C(lit.)
Formula C7H5Br2F Boiling Point 254.1 °C at 760 mmHg
Molecular Weight 267.923 Flash Point 107.5 °C
Transport Information UN 2923 8/PG 3 Appearance white to light yellow crystal powder
Safety 26-36/37/39-45-61 Risk Codes 22-34-52/53-20/21/22
Molecular Structure Molecular Structure of 76283-09-5 (4-Bromo-2-fluorobenzyl bromide) Hazard Symbols CorrosiveC
Synonyms

4-Bromo-1-(bromomethyl)-2-fluorobenzene;4-bromo-1-(bromomethyl)-2-fluoro-benzene;4-Bromo 2-fluorobenzylbromide;2-Fluoro-bromobenzyl bromide;4-Bromo-2-fluorobenzylbromide;3,4-difluoro benzyl bromide;2-Fluoro-4-bromobenzyl bromide;2-fluoro-4-bromo Benzyl bromide;4-bromo-2-fluorobromobenzene;

Article Data 9

4-Bromo-2-fluorobenzyl bromide Synthetic route

188582-62-9

4-bromo-2-fluorobenzyl alcohol

76283-09-5

4-bromo-2-fluorobenzyl bromide

Conditions
ConditionsYield
With hydrogen bromide at 100℃; for 0.166667h;91%
51436-99-8

2-fluoro-4-bromotoluene

76283-09-5

4-bromo-2-fluorobenzyl bromide

Conditions
ConditionsYield
With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) In tetrachloromethane at 100℃; for 13h;89%
With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) In tetrachloromethane at 100℃; for 13h;89%
With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) In tetrachloromethane for 4h; Reflux; Inert atmosphere;53%
57848-46-1

4-bromo-2-fluorobenzaldehyde

76283-09-5

4-bromo-2-fluorobenzyl bromide

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: sodium tetrahydroborate / methanol / 0.5 h / 20 °C
2: hydrogen bromide / 0.17 h / 100 °C
View Scheme
773837-37-9

sodium cyanide

76283-09-5

4-bromo-2-fluorobenzyl bromide

114897-91-5

(4-bromo-2-fluorophenyl)acetonitrile

Conditions
ConditionsYield
In ethanol; water at 100℃; for 8.5h;100%
In DMF (N,N-dimethyl-formamide); water at 70℃; for 1h;99%
In ethanol at 60℃; for 12h; Solvent; Temperature; Inert atmosphere;99%
76283-09-5

4-bromo-2-fluorobenzyl bromide

124-40-3

dimethyl amine

1159976-88-1

N,N-dimethyl-4-bromo-2-fluorobenzylamine

Conditions
ConditionsYield
With potassium carbonate In water at 0 - 20℃; for 0.166667h;100%
19438-10-9

methyl 3-hydroxybenzoate

76283-09-5

4-bromo-2-fluorobenzyl bromide

3-(4-bromo-2-fluoro-benzyloxy)-benzoic acid methyl ester

Conditions
ConditionsYield
Stage #1: methyl 3-hydroxybenzoate With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 0.5h;
Stage #2: 4-bromo-2-fluorobenzyl bromide In N,N-dimethyl-formamide at 20℃;
99%
Stage #1: methyl 3-hydroxybenzoate With potassium carbonate In N,N-dimethyl-formamide at 20℃; for 0.5h;
Stage #2: 4-bromo-2-fluorobenzyl bromide In N,N-dimethyl-formamide at 80℃;
143-33-9

sodium cyanide

76283-09-5

4-bromo-2-fluorobenzyl bromide

114897-91-5

(4-bromo-2-fluorophenyl)acetonitrile

Conditions
ConditionsYield
In water; N,N-dimethyl-formamide at 70℃; for 1h;99%
In dimethyl sulfoxide at 20℃; for 4h;96%
In DMF (N,N-dimethyl-formamide); water at 70℃; for 3h;46%
In water; N,N-dimethyl-formamide at 70℃; for 1h;
4857-06-1

2-chloro-1H-benzoimidazole

76283-09-5

4-bromo-2-fluorobenzyl bromide

388574-68-3

1-(4-bromo-2-fluoro-benzyl)-2-chloro-1H-benzoimidazole

Conditions
ConditionsYield
Stage #1: 2-chloro-1H-benzoimidazole With sodium hydride In N,N-dimethyl-formamide
Stage #2: 4-bromo-2-fluorobenzyl bromide In N,N-dimethyl-formamide at 20℃; Further stages.;
97%
112733-45-6

ethyl 2-(7-chloro-1,2,3,4-tetrahydro-2,4-dioxoquinazoline-1-yl)acetate

76283-09-5

4-bromo-2-fluorobenzyl bromide

112733-28-5

ethyl 2-[3-(4-bromo-2-fluorobenzyl)-7-chloro-1,2,3,4-tetrahydro-2,4-dioxoquinazoline-1-yl)acetate

Conditions
ConditionsYield
With potassium carbonate; acetic acid In methanol; water; acetone97%
With potassium carbonate In methanol; acetic acid; acetone96%
With potassium carbonate In acetone at 20℃; for 5h; Reflux; Large scale;95.1%
With potassium carbonate; acetic acid In methanol; water; acetone
616-45-5

2-pyrrolidinon

76283-09-5

4-bromo-2-fluorobenzyl bromide

1022931-60-7

1-[(4-bromo-2-fluorophenyl)methyl]-2-pyrrolidinone

Conditions
ConditionsYield
Stage #1: 2-pyrrolidinon With sodium hydride In N,N-dimethyl-formamide at 20℃; for 0.25h;
Stage #2: 4-bromo-2-fluorobenzyl bromide In N,N-dimethyl-formamide at 20℃;
97%
Stage #1: 2-pyrrolidinon With sodium hydride In N,N-dimethyl-formamide at 20℃; for 0.25h;
Stage #2: 4-bromo-2-fluorobenzyl bromide In N,N-dimethyl-formamide at 20℃;
85%
Stage #1: 2-pyrrolidinon With sodium hydride In N,N-dimethyl-formamide; mineral oil at 20℃; for 0.25h; Inert atmosphere;
Stage #2: 4-bromo-2-fluorobenzyl bromide In N,N-dimethyl-formamide; mineral oil at 20℃; for 5h;
85%
Stage #1: 2-pyrrolidinon With sodium hydride In N,N-dimethyl-formamide; mineral oil for 0.5h; Inert atmosphere;
Stage #2: 4-bromo-2-fluorobenzyl bromide In N,N-dimethyl-formamide; mineral oil at 0 - 20℃; Inert atmosphere;
82%

4-Bromo-2-fluorobenzyl bromide Chemical Properties

Molecule structure of 4-Bromo-2-fluorobenzyl bromide (CAS NO.76283-09-5):

IUPAC Name: 4-Bromo-1-(bromomethyl)-2-fluorobenzene 
Molecular Weight: 267.921003 g/mol
Molecular Formula: C7H5Br2
Density: 1.923 g/cm3 
Melting Point: 33-36 °C(lit.)
Boiling Point: 254.1 °C at 760 mmHg 
Flash Point: 107.5 °C
Index of Refraction: 1.583
Molar Refractivity: 46.58 cm3
Molar Volume: 139.3 cm3
Surface Tension: 41.6 dyne/cm 
Enthalpy of Vaporization: 47.17 kJ/mol
Vapour Pressure: 0.0281 mmHg at 25 °C 
Sensitive: lachrymatory
XLogP3-AA: 3.3 
H-Bond Acceptor: 1
Rotatable Bond Count: 1
Exact Mass: 267.872157
MonoIsotopic Mass: 265.874204
Canonical SMILES: C1=CC(=C(C=C1Br)F)CBr
InChI: InChI=1S/C7H5Br2F/c8-4-5-1-2-6(9)3-7(5)10/h1-3H,4H2
InChIKey: XMHNLZXYPAULDF-UHFFFAOYSA-N
EINECS: 278-412-7
Product Categories: Fluoro-contained benzyl bromide series; Aromatic Halides (substituted)

4-Bromo-2-fluorobenzyl bromide Uses

 4-Bromo-2-fluorobenzyl bromide (CAS NO.76283-09-5) is used in pharmaceutical synthesis.

4-Bromo-2-fluorobenzyl bromide Safety Profile

Hazard Codes: CorrosiveC
Risk Statements: 22-34-52/53-20/21/22 
R22:Harmful if swallowed. 
R34:Causes burns. 
R52/53:Harmful to aquatic organisms, may cause long-term adverse effects in the aquatic environment. 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.
Safety Statements: 26-36/37/39-45-61 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR: UN 2923 8/PG 3
WGK Germany: 2
Hazard Note: Corrosive/Lachrymatory
HazardClass: 8
PackingGroup: III

4-Bromo-2-fluorobenzyl bromide Specification

 4-Bromo-2-fluorobenzyl bromide (CAS NO.76283-09-5) is also named as 4,alpha-Dibromo-2-fluorotoluene ; 4-Brom-1-(brommethyl)-2-fluorbenzol [German] ; 4-Bromo-1-(bromomethyl)-2-fluorobenzene ; Benzene, 4-bromo-1-(bromomethyl)-2-fluoro- ; 2-Fluoro-4-bromo-benzylbromide . 4-Bromo-2-fluorobenzyl bromide (CAS NO.76283-09-5) is white to light yellow crystal powder.

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