Reaction of cyclohexane with Br2:
Cyclohexane as one of alkanes is in most occasions are
unreactive, but can react in extreme conditions like radiation,
high temperature...
C6H12 + Br2 + high t, light ---> C6H11Br (bromcyclohexane) +
HBr(you should check this somewhere, I'm not sure)
KMnO4 is oxidative medium, but can't oxidate alkanes.
Cyclohexene as one of alkenes succumbs the reactions of
electrophylic addition, so in reaction with Br2:
C6H10 + Br2 ---> C6H10Br2 (1,2-dibrom cyclohexANE)
In reaction with KMnO4, Cyclohexene is oxidated to the alcohol
with two hydroxyl groups.
C6H10 + KMnO4 ---> C6H10(OH)2 (1,2 dihydroxicyclohexANE) +
MnO2
Toluene as derivate of benzene, shows reaction of succumbs the
reactions of electrophylic aromatic substitution. In reaction with
Br2:
C6H5CH3 + Br2 + FeBr3 (needed for reaction) ---> C6H4(CH3)Br
(brom-toluene or 1-brom 2(or 3 or 4)-metyl benzene) + HBr
Alkylbenzenes (toluene in this case) can react with KMnO4 and in
that reaction they forming aromatic carboxylic acids where
carboxylic group is directly connected to aromatic ring, so in this
case:
C6H5CH3 + KMnO4 (+ KOH) ---> C6H5COOH (benzoic acid) +
MnO2
