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2-Acetyl-5-bromopyridine

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Name

2-Acetyl-5-bromopyridine

EINECS 696-558-3
CAS No. 214701-49-2 Density 1.534 g/cm3
PSA 29.96000 LogP 2.04670
Solubility N/A Melting Point 112 °C
Formula C7H6BrNO Boiling Point 257.2 °C at 760 mmHg
Molecular Weight 200.035 Flash Point 109.4 °C
Transport Information N/A Appearance N/A
Safety Risk Codes N/A
Molecular Structure Molecular Structure of 214701-49-2 (1-(5-BROMO-PYRIDIN-2-YL)-ETHANONE) Hazard Symbols N/A
Synonyms

1-(5-Bromopyridin-2-yl)ethanone;

Article Data 21

2-Acetyl-5-bromopyridine Synthetic route

624-28-2

2,5-dibromopyridine

127-19-5

N,N-dimethyl acetamide

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
With n-butyllithium In hexane; toluene at -40 - 20℃; for 2h; Inert atmosphere;100%
Stage #1: 2,5-dibromopyridine With n-butyllithium In hexane; toluene at -40℃; for 0.666667h;
Stage #2: N,N-dimethyl acetamide In hexane; toluene at 20℃; for 1h; Further stages.;
83%
Stage #1: 2,5-dibromopyridine With n-butyllithium In toluene Inert atmosphere;
Stage #2: N,N-dimethyl acetamide In toluene Inert atmosphere;
83%
127-19-5

N,N-dimethyl acetamide

223463-13-6

2-iodo-5-bromopyridine

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
Stage #1: 2-iodo-5-bromopyridine With n-butyllithium In hexane; toluene at -40℃; for 1h;
Stage #2: N,N-dimethyl acetamide In hexane; toluene at -40 - 20℃; for 1h;
91%
1211592-38-9

5-bromo-N-methyoxy-N-methylpyridine-2-carboxamide

676-58-4

methylmagnesium chloride

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
In tetrahydrofuran at 0 - 20℃; for 1h;90%
111770-80-0

3-bromo-6-(trimethylsilylethynyl)pyridine

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
With sulfuric acid; mercury(II) diacetate In water; acetone for 1h; Heating;80%
75-16-1

methylmagnesium bromide

97483-77-7

2-Cyano-5-bromopyridine

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
Stage #1: methylmagnesium bromide; 2-Cyano-5-bromopyridine In tetrahydrofuran at -20 - -10℃; for 3h;
Stage #2: With hydrogenchloride In tetrahydrofuran at -35℃; for 0.166667h; Further stages.;
65%
Stage #1: methylmagnesium bromide; 2-Cyano-5-bromopyridine In tetrahydrofuran at -20 - -10℃; for 3h;
Stage #2: With hydrogenchloride; water In tetrahydrofuran at -40 - -35℃; for 0.166667h;
65%
Stage #1: methylmagnesium bromide; 2-Cyano-5-bromopyridine In tetrahydrofuran at -20 - -10℃; for 3h;
Stage #2: With hydrogenchloride; water In tetrahydrofuran at -40 - -35℃; for 0.166667h;
Stage #3: In tetrahydrofuran; water pH=7; potassium phosphate buffer;
65%
624-28-2

2,5-dibromopyridine

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 65 percent / NaCN / dimethylformamide / 3 h / Heating
2: tetrahydrofuran / 2 h / -20 °C
View Scheme
676-58-4

methylmagnesium chloride

97483-77-7

2-Cyano-5-bromopyridine

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
Stage #1: methylmagnesium chloride; 2-Cyano-5-bromopyridine In tetrahydrofuran at -20℃; for 2h;
Stage #2: With water; ammonium chloride In tetrahydrofuran
Stage #1: methylmagnesium chloride; 2-Cyano-5-bromopyridine In tetrahydrofuran at -20℃; for 2h;
Stage #2: With water; ammonium chloride In tetrahydrofuran
30766-11-1

5-bromoisonicotinic acid

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: N-ethyl-N,N-diisopropylamine; 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride / N,N-dimethyl-formamide / 48 h / 18 - 25 °C
2: tetrahydrofuran / 1 h / -78 °C
View Scheme
Multi-step reaction with 2 steps
1: N-ethyl-N,N-diisopropylamine; HATU / N,N-dimethyl-formamide / 20 °C
2: tetrahydrofuran / 1 h / 0 - 20 °C
View Scheme
845305-87-5

5-bromo-2-(N-methylaminocarbonyl)pyridine

917-54-4

methyllithium

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
In tetrahydrofuran at -78℃; for 1h;
223463-13-6

2-iodo-5-bromopyridine

214701-49-2

1-(5-bromopyridin-2-yl)ethanone

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: isopropylmagnesium bromide / tetrahydrofuran / 0.5 h / Inert atmosphere; Cooling with ice
1.2: 0.5 h / 20 °C / Cooling with ice
2.1: manganese(IV) oxide / dichloromethane / 40 °C
View Scheme

2-Acetyl-5-bromopyridine Chemical Properties

Empirical Formula: C7H6BrNO
Molecular Weight: 200.0326
Nominal Mass: 199 Da
Average Mass: 200.0326 Da
Monoisotopic Mass: 198.963269 Da 
Index of Refraction: 1.558
Molar Refractivity: 42.06 cm3
Molar Volume: 130.3 cm3
Surface Tension: 44.6 dyne/cm
Density: 1.534 g/cm3
Flash Point: 109.4 °C
Enthalpy of Vaporization: 49.48 kJ/mol
Boiling Point: 257.2 °C at 760 mmHg
Vapour Pressure: 0.0147 mmHg at 25 °C
Structure of 2-Acetyl-5-bromopyridine (CAS NO.214701-49-2):
                        
Product Category of 2-Acetyl-5-bromopyridine (CAS NO.214701-49-2): API intermediates;Pyridines

2-Acetyl-5-bromopyridine Specification

 2-Acetyl-5-bromopyridine , its cas register number is 214701-49-2. It also can be called 1-(5-Brom-2-pyridinyl)ethanon ; 1-(5-Bromo-2-pyridinyl)ethanone  ; and 5-Bromo-2-acetylpyridine .

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