What kind of reaction is the bromination of toluene?
halogenation reactions
Bromination is one of the examples of halogenation reactions which takes place when toluene reacts with molecular bromine under the iron(III) bromide catalyst.
Why does toluene react with bromine?
Toluene reacts with bromine in the presence of a source of UV light to give a mixture of mono-, di-, and tri-bromine substituted toluene at the methyl group. The hydrogen atoms on the benzene ring remain untouched. The mechanism is a free radical substitution one.
What is bromination of an alkane?
Bromination of alkanes occurs by a similar mechanism, but is slower and more selective because a bromine atom is a less reactive hydrogen abstraction agent than a chlorine atom, as reflected by the higher bond energy of H-Cl than H-Br. To see an animated model of the bromination free radical chain reaction.
Does toluene react with HBr?
Toluene reacts with bromide in the presence of light to give benzyl bromide, while in presence of FeBr3 it givesp-bromo toluene. Primary alkyl halide C4H9Br (a) reacted with alcoholic KOH to give compound (b). Compound (b) is treated with HBr to give (c) which is an isomer of (a).
Does toluene react with bromine?
Benzene and toluene do not react with bromine in the absence of a catalyst. Phenol is more reactive due to the presence of an electron donating hydroxyl group and reacts with bromine by a substitution reaction forming hydrogen bromide gas.
What is the major product of bromination of toluene?
o-bromotoluene
The bromination of toluene was studied in 75 % HoAc at different temperatures both in absence and presence of cyclodextrins. The results are listed in table I. Performing the bromination in water, the major product is the o-bromotoluene.
Does toluene dissolve in bromine?
Your bromine preparation did not mix with either hexane or toluene because of their non-polar nature. They are non-miscible with water. Gaseous bromine, either Br2(g) or HBr(g), would dissolve however.
What happens when you add bromine to an alkane?
Bromine water is an orange solution of bromine. It becomes colourless when it is shaken with an alkene. This has the effect of ‘saturating’ the molecule, and will turn an alkene into an alkane.
Which alcohol reacts faster with HBr?
2-methyl propane-2-ol is tertiary alcohol and thus, reacts fastest with HBr.
Which of the following compounds is least reactive towards bromination?
Nitrobenzene
Nitrobenzene is least reactive towards bromine because of presence of -NO2 group decreases electron density at o and p positions and hence attack of electrophile on the benzene nuclues is difficult because + ve charge on o and p position repel the incoming electrophile.
Is bromine soluble in toluene?
Your bromine preparation did not mix with either hexane or toluene because of their non-polar nature. They are non-miscible with water.