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{{Distinguish|Bromotoluene}} |
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| verifiedrevid = 443418196 |
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| Reference=<ref>'']'', 11th Edition, '''1142'''</ref> |
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| verifiedrevid = 443419516 |
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| Name = Benzyl bromide |
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| Reference = <ref>{{cite book|title=Merck Index |edition=11th |page=1142|title-link=Merck Index }}</ref> |
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| ImageFileL1 = Benzyl-bromide-skeletal.svg |
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| Name = Benzyl bromide |
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| ImageSizeL1 = 120px |
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| ImageNameL1 = Skeletal structure of the benzyl bromide molecule |
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| ImageFileL1 = Benzyl bromide.svg |
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| ImageNameL1 = Skeletal structure of the benzyl bromide molecule |
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| ImageFileR1 = Benzyl-bromide-3D-vdW.png |
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| ImageFileR1 = Benzyl-bromide-from-clathrate-xtal-3D-sf.png |
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| ImageNameR1 = 3D structure of the benzyl bromide molecule |
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| ImageSizeR1 = 100px |
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| PIN = (Bromomethyl)benzene <!-- Nomenclature of Organic Chemistry – IUPAC Recommendations and Preferred Names 2013 (Blue Book) --> |
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| ImageNameR1 = 3D structure of the benzyl bromide molecule |
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| SystematicName = |
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| IUPACName = Bromomethylbenzene |
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| OtherNames = α-Bromotoluene<br />Benzyl bromide |
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| IUPACName = |
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| Section1 = {{Chembox Identifiers |
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| Section1 = {{Chembox Identifiers |
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| IUPHAR_ligand = 6294 |
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| InChI = 1/C7H7Br/c8-6-7-4-2-1-3-5-7/h1-5H,6H2 |
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| InChI = 1/C7H7Br/c8-6-7-4-2-1-3-5-7/h1-5H,6H2 |
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| InChIKey = AGEZXYOZHKGVCM-UHFFFAOYAM |
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| InChIKey = AGEZXYOZHKGVCM-UHFFFAOYAM |
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| SMILES1 = c1ccc(cc1)CBr |
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| SMILES1 = c1ccc(cc1)CBr |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo_Ref = {{cascite|correct|CAS}} |
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| CASNo = 100-39-0 |
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| CASNo = 100-39-0 |
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| UNII_Ref = {{fdacite|changed|FDA}} |
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| PubChem = 7498 |
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| UNII = XR75BS721D |
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| ChEBI_Ref = {{ebicite|correct|EBI}} |
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| PubChem = 7498 |
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| ChEBI_Ref = {{ebicite|correct|EBI}} |
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| ChEBI = 59858 |
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| ChEBI = 59858 |
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| SMILES = BrCc1ccccc1 |
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| SMILES = BrCc1ccccc1 |
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| Section2 = {{Chembox Properties |
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| Section2 = {{Chembox Properties |
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| C=7 | H=7 | Br=1 |
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| Formula = C<sub>7</sub>H<sub>7</sub>Br |
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| Appearance = Colorless liquid |
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| MolarMass = 171.04 g/mol |
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| Odor = Sharp and pungent |
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| Density = 1.438 g/cm³ at 20 °C |
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| Density = 1.438 g/cm<sup>3</sup> |
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| MeltingPtC = -3.9 |
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| MeltingPtC = -3.9 |
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| BoilingPt = 198-199 °C |
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| BoilingPtC = 201 |
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| SolubleOther = organic solvents |
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| RefractIndex = 1.5752 |
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| LogP = 2.92<ref name="chemsrc">{{Cite web|url=https://www.chemsrc.com/en/cas/100-39-0_401904.html|title=Benzyl bromide_msds}}</ref> |
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}} |
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| Section7 = {{Chembox Hazards |
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| FlashPtC = 70 |
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| GHSPictograms = {{GHS07}} |
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'''Benzyl bromide''' is an ] with the formula {{chem2|C6H5CH2Br}}. The molecule consists of a ] ring substituted with a bromomethyl group. It is a colorless liquid with lachrymatory properties. The compound is a reagent for introducing ]s.<ref name=eEROS>{{cite journal|title=Benzyl Bromide|author=William E. Bauta|journal=Encyclopedia of Reagents for Organic Synthesis|year=2001|doi=10.1002/047084289X.rb047|isbn=0-471-93623-5}}</ref><ref>{{cite web|title=Benzyl bromide|url=http://www.sigmaaldrich.com/catalog/product/aldrich/b17905?lang=en®ion=RU|website=]|publisher=sigmaaldrich.com|access-date=8 June 2017}}</ref> |
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'''Benzyl bromide''', or α-bromotoluene, is an ] consisting of a ] ring substituted with a bromomethyl group. It can be prepared by the bromination of ] at room temperature in air, using ] as a heterogeneous catalyst. It is a colorless liquid that is decomposed slowly in water. |
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== Synthesis and structure== |
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Benzyl bromide is used in ] for the introduction of the benzyl ] for ]s and ]s. |
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Benzyl bromide can be synthesized by the bromination of ] under conditions suitable for a ]: |
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The structure has been examined by electron diffraction.<ref>{{cite journal|last1=Vilkov|first1=L. V.|last2=Sadova|first2=N. I.|title=Electron diffraction study on the molecular structure of benzyl chloride and benzyl bromide in the vapour phase|journal=]|date=March 1976|volume=31|issue=1|pages=131–142|doi=10.1016/0022-2860(76)80124-X|bibcode=1976JMoSt..31..131S }}</ref> |
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Benzyl bromide is a strong ] and is also intensely irritating to skin and mucous membranes. Because of these properties, it has been used as a war gas. |
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== Synthesis == |
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==Applications== |
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Benzyl bromide is used in ] for the introduction of the benzyl groups when the less expensive ] is insufficiently reactive.<ref>{{cite journal|title=Synthesis and Diastereoselective Alkylation of Pseudoephenedrine Amides |author=Andrew G. Myers |author2=Bryant H. Yang|journal=Org. Synth.|year=2000|volume=77|page=22|doi=10.15227/orgsyn.077.0022}}</ref> |
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Benzyl bromide can be synthesized by the bromination of ] under conditions suitable for a ]: |
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<ref>{{cite journal|title=1-Benzylindole |author=Harry Heaney |author2=Steven V. Ley|journal=Org. Synth.|year=1974|volume=54|page=58|doi=10.15227/orgsyn.054.0058}}</ref> Benzylations are often achieved in the presence of catalytic amounts of ], which generates the more reactive benzyl iodide in situ.<ref name=eEROS/> In some cases, benzyl serves as ] for ]s and ]s.<ref>{{cite web|title=Benzyl bromide|url=http://www.chemicalbook.com/ChemicalProductProperty_EN_CB6761035.htm|publisher=chemicalbook.com|access-date=8 June 2017}}</ref> |
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==Safety== |
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Benzyl bromide is a strong ] and is also intensely irritating to skin and mucous membranes. Because of these properties, it has been used in ], both in combat and in training due to its irritating yet non-lethal nature. |
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] may also be used in place of elemental bromine. |
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== See also == |
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== See also == |
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== References == |
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== References == |
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{{reflist}} |
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{{reflist}} |
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{{Chemical agents}} |
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