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204205-33-4

Basic Information
CAS No.: 204205-33-4
Name: 2-Bromo-2-(2-fluorophenyl)-1-cyclopropylethanone
Article Data: 21
Molecular Structure:
Molecular Structure of 204205-33-4 (2-Bromo-2-(2-fluorophenyl)-1-cyclopropylethanone)
Formula: C11H10BrFO
Molecular Weight: 257.102
Synonyms: 2-Bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone;Ethanone,2-bromo-1-cyclopropyl-2-(2-fluorophenyl)-;a-(Cyclopropylcarbonyl)-2-fluorobenzyl bromide;
EINECS: 812-641-0
Density: 1.574 g/cm3
Boiling Point: 293.012 °C at 760 mmHg
Flash Point: 131.009 °C
PSA: 17.07000
LogP: 3.24080
Synthetic route
150322-73-9

1-cyclopropyl-2-(2-fluorophenyl)ethanone

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
With iodine(I) bromide; 1-n-butyl-3-methylimidazolim bromide In tetrahydrofuran at 40℃; for 4h; Temperature; Time; Concentration;95.3%
With bromine In methanol at 25 - 30℃; for 6h; Concentration;94.65%
With 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione; 2,2'-azobis(isobutyronitrile) In cyclohexane at 10℃; Product distribution / selectivity; Reflux;93.28%
451-82-1

(2-fluorophenyl)acetic acid

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: triethylamine / dichloromethane / 0.25 h / 0 - 5 °C
1.2: 6 h / 0 - 5 °C
2.1: iodine; magnesium / tetrahydrofuran / 25 - 50 °C
2.2: 40 - 50 °C
2.3: 0.25 h / 0 - 30 °C
3.1: toluene-4-sulfonic acid; 2,2'-azobis(isobutyronitrile); N-Bromosuccinimide / chloroform / 4 h / Reflux
View Scheme
Multi-step reaction with 2 steps
1.1: magnesium; isopropyl bromide / toluene; tetrahydrofuran / 15 - 65 °C
1.2: 5 - 65 °C
2.1: dibenzoyl peroxide; N-Bromosuccinimide / ethyl acetate / 25 - 60 °C
View Scheme
Multi-step reaction with 2 steps
1.1: magnesium; isopropyl bromide / toluene; tetrahydrofuran / 15 - 65 °C
1.2: 5 - 65 °C
2.1: dibenzoyl peroxide; N-Bromosuccinimide / ethyl acetate / 25 - 60 °C
View Scheme
Multi-step reaction with 2 steps
1: sodium hydride / toluene; dimethyl sulfoxide / 1.5 h / 95 - 110 °C / Large scale
2: bromine / methanol / Large scale
View Scheme
946402-23-9

2-(2-fluorophenyl)-N-methoxy-N-methylacetamide

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: iodine; magnesium / tetrahydrofuran / 25 - 50 °C
1.2: 40 - 50 °C
1.3: 0.25 h / 0 - 30 °C
2.1: toluene-4-sulfonic acid; 2,2'-azobis(isobutyronitrile); N-Bromosuccinimide / chloroform / 4 h / Reflux
View Scheme
Multi-step reaction with 2 steps
1.1: iodine; magnesium / tetrahydrofuran / 40 - 50 °C
1.2: 0.25 h / 0 - 30 °C
2.1: 2,2'-azobis(isobutyronitrile); N-Bromosuccinimide / toluene-4-sulfonic acid / dichloromethane / 4.75 h / 0 - 5 °C / Reflux
View Scheme
345-35-7

2-fluorobenzyl chloride

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: tetrabutylammomium bromide / dichloromethane; water / 25 °C
2.1: sodium hydroxide; water / 5 - 95 °C
2.2: pH 2 - 3
3.1: magnesium; isopropyl bromide / toluene; tetrahydrofuran / 15 - 65 °C
3.2: 5 - 65 °C
4.1: dibenzoyl peroxide; N-Bromosuccinimide / ethyl acetate / 25 - 60 °C
View Scheme
Multi-step reaction with 4 steps
1.1: tetrabutylammomium bromide / dichloromethane; water / 25 °C
2.1: sodium hydroxide; water / 5 - 95 °C
2.2: pH 2 - 3
3.1: magnesium; isopropyl bromide / toluene; tetrahydrofuran / 15 - 65 °C
3.2: 5 - 65 °C
4.1: dibenzoyl peroxide; N-Bromosuccinimide / ethyl acetate / 25 - 60 °C
View Scheme
Multi-step reaction with 2 steps
1: magnesium; iodine / tetrahydrofuran; 2-methyltetrahydrofuran / 1.5 h / 40 - 45 °C / Inert atmosphere
2: N-Bromosuccinimide; toluene-4-sulfonic acid / acetonitrile / 24 h / 40 °C
View Scheme
Multi-step reaction with 2 steps
1: magnesium; iodine / tetrahydrofuran; toluene / 1.5 h / 40 - 45 °C / Inert atmosphere
2: N-Bromosuccinimide; toluene-4-sulfonic acid / acetonitrile / 24 h / 40 °C
View Scheme
326-62-5

2-fluorophenyl acetonitrile

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: sodium hydroxide; water / 5 - 95 °C
1.2: pH 2 - 3
2.1: magnesium; isopropyl bromide / toluene; tetrahydrofuran / 15 - 65 °C
2.2: 5 - 65 °C
3.1: dibenzoyl peroxide; N-Bromosuccinimide / ethyl acetate / 25 - 60 °C
View Scheme
Multi-step reaction with 3 steps
1.1: sodium hydroxide; water / 5 - 95 °C
1.2: pH 2 - 3
2.1: magnesium; isopropyl bromide / toluene; tetrahydrofuran / 15 - 65 °C
2.2: 5 - 65 °C
3.1: dibenzoyl peroxide; N-Bromosuccinimide / ethyl acetate / 25 - 60 °C
View Scheme
4606-07-9

ethyl cyclopropylcarboxylate

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
Stage #1: With iodine; magnesium; isopropyl bromide In tetrahydrofuran at 65℃; for 3h;
Stage #2: ethyl cyclopropylcarboxylate In tetrahydrofuran at 5 - 70℃; for 3.16667h;
Stage #3: With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile); toluene-4-sulfonic acid In chloroform at 28 - 65℃; for 4h;

2-(2-fluorophenyl acetic acid)

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: triethylamine / dicyclohexyl-carbodiimide; benzotriazol-1-ol / dichloromethane / 6 h / 0 - 5 °C
2.1: iodine; magnesium / tetrahydrofuran / 40 - 50 °C
2.2: 0.25 h / 0 - 30 °C
3.1: 2,2'-azobis(isobutyronitrile); N-Bromosuccinimide / toluene-4-sulfonic acid / dichloromethane / 4.75 h / 0 - 5 °C / Reflux
View Scheme
462-06-6

fluorobenzene

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: tin(IV) chloride / tetrahydrofuran / 4 h / 45 °C
2: dichloromethane / 4 h / 20 °C
3: bromine / tetrahydrofuran / 10 h / 20 °C
View Scheme
57486-67-6

methyl o-fluorophenylacetate

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: pyridine / tetrahydrofuran / 6 h / 20 - 60 °C
2: 2,2'-azobis(isobutyronitrile); N-Bromosuccinimide / chloroform / 8 h / 20 °C
View Scheme
446-48-0

o-fluorobenzyl bromide

204205-33-4

2-bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: magnesium / methyl iodide / diethyl ether / 20 °C
1.2: 20 °C
1.3: 0 °C
2.1: 1,3-dibromo-5,5-dimethylimidazolidine-2,4-dione; 2,2'-azobis(isobutyronitrile) / cyclohexane / 10 °C / Reflux
View Scheme
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Chemistry

Molecule structure of 2-Bromo-2-(2-fluorophenyl)-1-cyclopropylethanone (CAS NO.204205-33-4):

Molecular Formula: C11H10BrFO
Molecular Weight: 257.10 g/mol
Density: 1.574 g/cm3 
Boiling Point: 293.012 °C at 760 mmHg 
Flash Point: 131.009 °C
Index of Refraction: 1.592
Molar Refractivity: 55.256 cm3
Molar Volume: 163.331 cm3
Polarizability: 21.905×10-24 cm3
Surface Tension: 50.662 dyne/cm
Enthalpy of Vaporization: 53.255 kJ/mol
Vapour Pressure: 0.002 mmHg at 25 °C 
InChI: InChI=1/C11H10BrFO/c12-10(11(14)7-5-6-7)8-3-1-2-4-9(8)13/h1-4,7,10H,5-6H2 
InChIKey of 2-Bromo-2-(2-fluorophenyl)-1-cyclopropylethanone (CAS NO.204205-33-4): LMCZCCDXOZGIND-UHFFFAOYAC

Specification

 2-Bromo-2-(2-fluorophenyl)-1-cyclopropylethanone (CAS NO.204205-33-4) is also named as 2-Bromo-1-cyclopropyl-2-(2-fluorophenyl)ethanone ; ethanone, 2-bromo-1-cyclopropyl-2-(2-fluorophenyl)- .