Which of the following vinyl derivatives is t | vedclass

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(D) Anionic polymerisation involves an anionic initiator that generates a carbanionic intermediate.In this process,the active centre of the propagatin

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$CH_2=CH-C\equiv N$

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(D) Anionic polymerisation involves an anionic initiator that generates a carbanionic intermediate.In this process,the active centre of the propagating species carries a negative charge.Therefore,polymerisation occurs most readily with monomers containing electron-withdrawing groups $(EWG)$ such as nitrile $(-CN)$,phenyl,or carbonyl groups,which stabilize the negative charge on the propagating species through inductive or resonance effects.Among the given options,the nitrile group $(-C\equiv N)$ is a strong electron-withdrawing group.Thus,$CH_2=CH-CN$ (acrylonitrile) is the most reactive towards anionic polymerisation.

Which of the following vinyl derivatives is the most reactive towards anionic polymerisation?

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