Which of the following alkenes is least react | vedclass

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(A) Anionic polymerization is initiated by a nucleophile (anion) attacking the double bond of the monomer.For this reaction to occur,the monomer must

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$CH_2=CH-CH_3$

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(A) Anionic polymerization is initiated by a nucleophile (anion) attacking the double bond of the monomer.For this reaction to occur,the monomer must have electron-withdrawing groups $(EWG)$ attached to the double bond to stabilize the resulting carbanion intermediate.$CH_2=CH-CN$ and $CH_2=CH-C_6H_5$ have strong electron-withdrawing groups ($-CN$ and $-C_6H_5$ respectively) that stabilize the negative charge.$CF_2=CF_2$ is also susceptible to anionic polymerization due to the strong inductive effect of fluorine atoms.$CH_2=CH-CH_3$ (propene) contains an electron-donating methyl group $(-CH_3)$,which destabilizes the carbanion intermediate,making it the least reactive towards anionic polymerization.

Which of the following alkenes is least reactive towards anionic polymerization?

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