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Benzyl bromide is used in organic synthesis for the introduction of the benzyl groups when the less expensive benzyl chloride is insufficiently reactive. [6] [7] Benzylations are often achieved in the presence of catalytic amounts of sodium iodide, which generates the more reactive benzyl iodide in situ. [3]
Bromobenzene is prepared by the action of bromine on benzene in the presence of Lewis acid catalysts such as aluminium chloride or ferric bromide. [3]Bromobenzene is used to introduce a phenyl group into other compounds.
2-Phenylethyl bromide is an organobromide with the formula C 6 H 5 CH 2 CH 2 Br. It is a colorless liquid, although older samples appear yellow. Analogous to the preparation of most 1-bromoalkanes, it is prepared by free-radical addition of hydrogen bromide to styrene.
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Monobromotoluene isomers [1] [2] [3]; Common name Structure Systematic name: 1-bromo-2-methylbenzene 1-bromo-3-methylbenzene 1-bromo-4-methylbenzene Molecular formula
The reaction takes place in a two-phase mixture of p-xylene and water as solvent, in the presence of catalytic PdCl 2 (NCPh) 2 and triphenylphosphine (PPh 3), tetrabutylammonium iodide (TBAI) as a phase-transfer catalyst, and sodium hydroxide as a base. Below is an example reaction of 1,3-dibromobenzene to isophthalic acid. [1]
Dibromobenzene isomers Common name and systematic name 1,2-Dibromobenzene: 1,3-Dibromobenzene [1]: 1,4-Dibromobenzene [2] [3] [4]: Structure Molecular formula: C 6 H 4 Br 2: Molar mass