In the given selective hydrogenation,which co | vedclass

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(C) Wilkinson's catalyst $(W.C.)$,$[RhCl(PPh_3)_3]$,is a homogeneous catalyst used for the selective hydrogenation of alkenes.It is highly sensitive t

Vedclass · Accepted Answer

$1-$methylcyclohex$-1-$ene + $H_2$ / $W.C.$ $\rightarrow$ methylcyclohexane (selective reduction of endocyclic double bond)

Vedclass · Answer

(C) Wilkinson's catalyst $(W.C.)$,$[RhCl(PPh_3)_3]$,is a homogeneous catalyst used for the selective hydrogenation of alkenes.It is highly sensitive to steric hindrance.It preferentially reduces less sterically hindered alkenes (e.g.,terminal alkenes) over more substituted or sterically hindered ones.In option $C$,the endocyclic double bond in $1$-methylcyclohex-$1$-ene is more substituted and sterically hindered than a terminal alkene,so it is not the preferred site for reduction by $W.C.$ compared to terminal alkenes. Thus,the reaction shown in option $C$ is incorrect.

In the given selective hydrogenation,which combination is incorrect?

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