Answer :
Answer:
C)
Explanation:
The first step is to draw the figures to see where is placed the positive charge. (See figure). Then, we have to remember that a rearrangement only takes place if we go from a primary or secondary carbocation to a tertiary one.
When we check all the structures we can notice that all are secondary carbocation except for C). This structure is already a tertiary carbocation, so in this molecule is not possible a rearrangement because is already a tertiary carbocation.
The carbocation that would not be likely to undergo rearrangement is :
( C ) CH₃CCH₂ CH₃
Rearrangement of carbocations
Carbocation is an ion that possess a positively charged carbon atom. the rearrangement of carbocations is dependent on the level of carbocation. If a carbocation is at its primary or secondary level it can undergo rearrangement to attain its tertiary stage. While
A carbocation at its tertiary stage will not undergo rearrangement as it has attained it s final stage. from the options listed the only carbocation at ite tertiary stage is option c
Hence we can conclude that the carbocation that would not be likely to undergo rearrangement is :
( C ) CH₃CCH₂ CH₃.
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