The given reaction is a pinacol-pinacolone re | vedclass

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(A) The reaction is a pinacol-pinacolone rearrangement of $1,1'-bi(cyclopentane)-1,1'-diol$. Upon treatment with $conc. H_2SO_4$ and heat,one of the h

Vedclass · Accepted Answer

It is a spiro compound

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(A) The reaction is a pinacol-pinacolone rearrangement of $1,1'-bi(cyclopentane)-1,1'-diol$. Upon treatment with $conc. H_2SO_4$ and heat,one of the hydroxyl groups is protonated and leaves as water,forming a carbocation. Then,a ring contraction or rearrangement occurs to form a ketone. The product formed is $cyclopentyl-cyclopentanone$ (specifically,$2-cyclopentylcyclopentanone$). $A$. It is not a spiro compound; it is a bicyclic ketone where one cyclopentyl ring is attached to the other. $B$. It is a ketone. $C$. It can show tautomerism because it has $\alpha$-hydrogens. $D$. The double bond equivalent $(DBE)$ for $C_{10}H_{16}O$ is $10 - (16/2) + 1 = 3$. Thus,the statement that $DBE = 4$ is incorrect.

The given reaction is a pinacol-pinacolone rearrangement. Which of the following is not correct about the product formed?

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