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Cas Database |
| Name |
3,5-Dibromo-4-methylpyridine |
EINECS | N/A |
| CAS No. | 3430-23-7 | Density | 1.911 g/cm3 |
| PSA | 12.89000 | LogP | 2.91500 |
| Solubility | N/A | Melting Point |
104-107 °C |
| Formula | C6H5Br2N | Boiling Point | 243 °C at 760 mmHg |
| Molecular Weight | 250.92 | Flash Point | 100.7 °C |
| Transport Information | N/A | Appearance | N/A |
| Safety | 26-36/37/39 | Risk Codes | 20/21/22-36/37/38 |
| Molecular Structure |
|
Hazard Symbols | R20/21/22:Harmful by inhalation, in contact with skin and if swallowed.; R36/37/38:Irritating to eyes, respiratory system |
| Synonyms |
4-Picoline,3,5-dibromo- (7CI,8CI); |
Article Data | 8 |
3,5-Dibromo-4-methylpyridine Synthetic route
Conditions
| Conditions | Yield |
|---|---|
| Stage #1: 3,5-dibromopyridine With lithium diisopropyl amide In tetrahydrofuran at -78℃; for 0.5h; Stage #2: methyl iodide In tetrahydrofuran at -78 - 20℃; for 18h; | 66% |
| Stage #1: 3,5-dibromopyridine With n-butyllithium; diisopropylamine In tetrahydrofuran; hexane at -78 - -10℃; for 0.5h; Stage #2: methyl iodide In tetrahydrofuran; hexane at -78℃; for 2h; | |
| Stage #1: 3,5-dibromopyridine With lithium diisopropyl amide In tetrahydrofuran at -78℃; Stage #2: methyl iodide In tetrahydrofuran at -78℃; |
- 625-92-3
3,5-dibromopyridine
- 74-88-4
methyl iodide
A
- 3430-23-7
3,5-dibromo-4-methyl-pyridine
B
- 125419-80-9
3,5-dibromo-4-ethylpyridine
Conditions
| Conditions | Yield |
|---|---|
| With lithium diisopropyl amide 1.) THF, -78 deg C, 5 min; 2.) THF, -78 deg C, excess MeI; Yield given. Multistep reaction. Yields of byproduct given; |
Conditions
| Conditions | Yield |
|---|---|
| With lithium diisopropyl amide 1.) THF, -78 deg C, 5 min; 2.) -78 deg C, 2h; Yield given. Multistep reaction; |
Conditions
| Conditions | Yield |
|---|---|
| Stage #1: 3,5-dibromopyridine With n-butyllithium; diisopropylamine In tetrahydrofuran; hexane at -78 - -10℃; for 0.5h; Stage #2: methyl iodide In tetrahydrofuran; hexane at -78℃; for 2h; |
Conditions
| Conditions | Yield |
|---|---|
| Stage #1: 3,5-dibromo-4-methyl-pyridine With lithium hexamethyldisilazane In tetrahydrofuran at 0℃; for 1h; Inert atmosphere; Stage #2: carbonic acid dimethyl ester In tetrahydrofuran at 0℃; for 2h; Inert atmosphere; | 93% |
Conditions
| Conditions | Yield |
|---|---|
| With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate In 1,4-dioxane; water at 85℃; for 16h; Inert atmosphere; | 80% |
- 3430-23-7
3,5-dibromo-4-methyl-pyridine
- 87199-15-3
[3-(hydroxymethyl)phenyl]boronic acid
- 351458-12-3
a-[3-(5-Bromo-4-methyl-pyridin-3-yl)-phenyl]-methanol
Conditions
| Conditions | Yield |
|---|---|
| 79% |
- 3430-23-7
3,5-dibromo-4-methyl-pyridine
- 68-12-2, 33513-42-7
N,N-dimethyl-formamide
- 351457-86-8
5-bromo-4-methyl-pyridine-3-carbaldehyde
Conditions
| Conditions | Yield |
|---|---|
| Stage #1: 3,5-dibromo-4-methyl-pyridine With n-butyllithium In tetrahydrofuran; hexane at -100℃; for 0.0833333h; Stage #2: N,N-dimethyl-formamide In tetrahydrofuran; hexane at -100 - -78℃; for 1.33333h; Stage #3: With ammonium chloride In tetrahydrofuran; hexane; water Saturated solution; | 72% |
| Stage #1: 3,5-dibromo-4-methyl-pyridine With n-butyllithium at -78℃; Stage #2: N,N-dimethyl-formamide Further stages.; |
Conditions
| Conditions | Yield |
|---|---|
| With (1,1'-bis(diphenylphosphino)ferrocene)palladium(II) dichloride; sodium carbonate In 1,4-dioxane; water at 80℃; for 16h; Inert atmosphere; | 71% |
Conditions
| Conditions | Yield |
|---|---|
| With palladium bis[bis(diphenylphosphino)ferrocene] dichloride; triethylamine In ethanol at 90℃; for 4h; Suzuki Coupling; Inert atmosphere; | 66% |
3,5-Dibromo-4-methylpyridine Chemical Properties
The molecular formula of 3,5-Dibromo-4-methylpyridine(3430-23-7) is C6H5Br2N and its formula weight is 250.92.
3,5-Dibromo-4-methylpyridine(3430-23-7) has a melting point of 104-107°C.
The chemical synonyms of 3,5-Dibromo-4-methylpyridine(3430-23-7) are 3,5-Dibromo-4-picoline;4-Methyl-3,5-dibromopyridine;3,5-DIBROMO-4-METHYLPYRIDINE
The molecular structure of 3,5-Dibromo-4-methylpyridine(3430-23-7):
3,5-Dibromo-4-methylpyridine(3430-23-7) has a melting point of 104-107°C.
The chemical synonyms of 3,5-Dibromo-4-methylpyridine(3430-23-7) are 3,5-Dibromo-4-picoline;4-Methyl-3,5-dibromopyridine;3,5-DIBROMO-4-METHYLPYRIDINE
The molecular structure of 3,5-Dibromo-4-methylpyridine(3430-23-7):
3,5-Dibromo-4-methylpyridine Safety Profile
Risk Statements 20/21/22-36/37/38
Safety Statements 26-36/37/39
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3,5-Dibromo-4-methylpyridine
