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| CAS No.: | 2270-59-9 |
|---|---|
| Name: | 5-BROMO-2-METHYL-2-PENTENE |
| Article Data: | 55 |
| Molecular Structure: | |
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|
|
| Formula: | C6H11Br |
| Molecular Weight: | 163.057 |
| Synonyms: | 5-Bromo-2-methyl-2-pentene; |
| EINECS: | -0 |
| Density: | 1.215 g/cm3 |
| Melting Point: | -102.35°C (estimate) |
| Boiling Point: | 152.6 °C at 760 mmHg |
| Flash Point: | 22.8 °C |
| Solubility: | Slightly miscible with water. |
| Appearance: | Colorless Liquid |
| Hazard Symbols: |
 Xi
|
| Risk Codes: | 10-36/37/38 |
| Safety: | 26-36 |
| Transport Information: | UN 1993 |
| PSA: | 0.00000 |
| LogP: | 2.73760 |
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| Conditions | Yield |
|---|---|
| With magnesium bromide In diethyl ether for 3h; Heating; | 93% |
| With magnesium bromide In diethyl ether for 8h; Heating; | 89% |
| With hydrogen bromide; lithium bromide In water at 0℃; for 0.75h; | 87% |
| Conditions | Yield |
|---|---|
| Stage #1: Cyclopropyl methyl ketone; methylmagnesium bromide In tetrahydrofuran for 1h; Reflux; Inert atmosphere; Stage #2: With sulfuric acid In tetrahydrofuran; water at 10℃; for 0.5h; Inert atmosphere; | 88% |
| Stage #1: Cyclopropyl methyl ketone; methylmagnesium bromide In tetrahydrofuran at 20℃; Inert atmosphere; Reflux; Stage #2: With sulfuric acid In tetrahydrofuran at 10℃; | 85% |
| With sulfuric acid In diethyl ether for 1h; | 85% |
| Conditions | Yield |
|---|---|
| With pyridine; phosphorus tribromide In diethyl ether for 8h; Ambient temperature; | 82% |
| With hydrogen bromide | |
| With pyridine; phosphorus tribromide | |
| Multi-step reaction with 2 steps 1: pyridine 2: 56 percent / LiBr / acetone / 4 h / Heating View Scheme |
| Conditions | Yield |
|---|---|
| With lithium bromide In acetone for 4h; Heating; | 56% |
- 52278-94-1
2,5-dibromo-2-methylpentane
- 2270-59-9
1-bromo-4-methylpent-3-ene
| Conditions | Yield |
|---|---|
| With pyridine at 60 - 100℃; under 150 Torr; | |
| With Potassium benzoate; acetic acid |
- 52278-94-1
2,5-dibromo-2-methylpentane
- 582-25-2
Potassium benzoate
- 64-19-7
acetic acid
- 2270-59-9
1-bromo-4-methylpent-3-ene
- 930-39-2
2-cyclopropyl-2-propanol
A
- 52278-94-1
2,5-dibromo-2-methylpentane
B
- 2270-59-9
1-bromo-4-methylpent-3-ene
| Conditions | Yield |
|---|---|
| With hydrogen bromide at 10 - 15℃; for 0.133333h; |
- 930-39-2
2-cyclopropyl-2-propanol
A
- 2270-59-9
1-bromo-4-methylpent-3-ene
B
- 41182-50-7
1-bromo-4-methylpent-4-ene
| Conditions | Yield |
|---|---|
| With hydrogen bromide In pentane |
| Conditions | Yield |
|---|---|
| With carbon tetrabromide; triphenylphosphine 1) ether, 4 h, 2) CH2Cl2, ice cooling, 5 min; Yield given. Multistep reaction; |
- Total:38 Page 1 of 1 1
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Specification
The 2-Pentene,5-bromo-2-methyl-, with the CAS registry number of 2270-59-9, is also known as 5-Bromo-2-methyl-2-pentene. It belongs to the product categories of Alkenyl; Halogenated Hydrocarbons; Organic Building Blocks. This chemical's molecular formula is C6H11Br and molecular weight is 163.06. What's more, its IUPAC name is 5-Bromo-2-methylpent-2-ene. In addition, it must be stored in airtight containers and placed in a dry, cool place.
Physical properties about the 2-Pentene,5-bromo-2-methyl- are: (1)ACD/LogP: 3.41; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 3.41; (4)ACD/LogD (pH 7.4): 3.41; (5)ACD/BCF (pH 5.5): 231.69; (6)ACD/BCF (pH 7.4): 231.69; (7)ACD/KOC (pH 5.5): 1715.55; (8)ACD/KOC (pH 7.4): 1715.55; (9)#H bond acceptors: 0; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 0 Å2; (13)Index of Refraction: 1.47; (14)Molar Refractivity: 37.47 cm3; (15)Molar Volume: 134.1 cm3; (16)Surface Tension: 27.1 dyne/cm; (17)Density: 1.215 g/cm3; (18)Flash Point: 22.8 °C; (19)Enthalpy of Vaporization: 37.34 kJ/mol; (20)Boiling Point: 152.6 °C at 760 mmHg; (21)Vapour Pressure: 4.44 mmHg at 25 °C.
Preparation: this chemical is prepared by 4-Methyl-pent-3-en-1-ol. The reaction needs reagents Pyridine and solvent Diethyl ether. The reaction time is 8 h. The yield is about 82 %.
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Uses: it is used to produce other chemicals. For example, it is used to produce 4-Methyl-3-pentenyltriphenylphosphoniumbromid. This reaction needs reagent Tetramethylpiperidine. Meanwhile, it needs solvent Acetonitrile. The reaction time is 24 h with reaction temperature of 85 °C.
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When you are using this chemical, please be cautious about it as the following:
As a chemical, it is irritating to eyes, respiratory system and skin. If contact with eyes accidently, rinse immediately with plenty of water and seek medical advice. During using it, wear suitable protective clothing. Besides, this chemical is highly flammable.
You can still convert the following datas into molecular structure:
(1) SMILES: BrCC\C=C(/C)C
(2) InChI: InChI=1/C6H11Br/c1-6(2)4-3-5-7/h4H,3,5H2,1-2H3
(3) InChIKey: UNXURIHDFUQNOC-UHFFFAOYAE