1.

Among the following, the one which reacts most readily with ethanol is

Answer»

p-nitrobenzyl BROMIDE
p-chlorobenzyl chloride
p-methoxybenzyl bromide
p-methylbenzyl bromide

Solution :Since benzyl carbocation is stabilized by resonance, therefore, reaction occurs by `S_(N)1` mechanism. Further since ELECTRON donating groups increase while electron withdrawing groups decrease the stability of carbocations, therefore, p-methoxybenzyl bromide REACTS most READILY since it gives the most stable carbocation.


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