Question

Which Product is not possible in above reaction?

(A)

(B)

(C)

(D)

(E)

Answer 1

Hint :The aromatic compounds when after a reaction produces a compound connected to halogen then the reaction is termed as halogenations reaction. Iff in halogen we use a specific type of halogen then the reaction is named after that atom. For instance, iff bromine is used in halogenations, then it will be called a bromination reaction.

Complete Step By Step Answer:
The term aromatic is exclusively used when, the benzene or compounds resembling it is present in the complex. Thus if the benzene ring is present then the aromatic complexes would be termed as the benzenoid compounds like toluene, xylene, phenol, etc. Whereas iff benzene is not present, but a compound resembling to benzene like heme, pyridine are present then they would be regarded as the non-benzenoid compounds examples includes, azulene, ferrocene, etc.
For the bromination reactions, it is to remember that the addition of the bromine will always take place around the double bond carbons only. That means carbon single bond carbon is free from the reaction. However, for the product to form, it is very important to take account of the electron cloud. In all the options above only in option (A) there would be uneven distribution of cloud i.e., the bromine above the plane will take half of the cloud and below the plane will take another half of the cloud. This leads to the polarization of the ring which ultimately leads to the cleavage of the ring as it destabilizes. Any reaction which leads to instability of the compound will not take place with changing temperature, pressure and other conditions.
Thus the below structure is impossible to produce.

Note :
For the stable products the energy of the product should be lower than the reactants. And for a reaction to carry out without changing the temperature, pressure conditions, a reaction in which un-stable product is formed is not feasible. That is reaction will not take place.