Question
Question: The major product of the following reaction is: .
However, the butene (or butylene) group bonded at the meta position will react with the HCl, and anhydrous AlCl3 to yield a product following Markovnikov’s rule. The reaction and be written as:
Additional information:
According to Markovnikov’s rule, the negative part of an H−X(X=Cl,Br,I) will get bonded to the carbon having less number of hydrogen.
However, the above condition can be altered and the reaction can be altered by adding peroxide. When peroxide is added to the reaction mixture the negative part will make a bond with the carbon having more hydrogen.
Note: It is possible to form aryl halides from aliphatic alcohol, but with phenols, it is not possible because of the resonance effect, and due to this effect the C−O bond becomes C=O in some resonating structures, this double bond is stronger than the single bond and hence cleavage of C−O is not possible in phenols.