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Arrange the following alkenes in order of increasing reactivity towards anionic polymerization. H_2C=CHCH_(3), H_(2)C=CF_(2), H_(2)C=CHCN,H_(2)C=CHCH_(6)H_(5) |
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Answer» Solution :REACTIVITY towards anionic polymerization increases as the stability of the stability of the intermediate carbonion increases. Since the stability of the intermediate carbanion increases in the order : `BCH_(2)-overset(-)(CH)-CH_(3)lt BCH_(2)-overset(-)(CH)-C_(6)H_(5)lt BCH_(2)-overset(-)(CF)_(2)lt BCH_(2)-overset(-)(CH)-CN` (where B is any nucleophile or the base) , therefore , reactivity of the CORRESPONDING ALKENES towards anionic polymerization increasesin the same order : `CH_(2)=CHCH_(3)ltCH_(2)=CHC_(6)H_(5)ltCH_(2)=CF_(2)ltCH_(2)=CHCN`. |
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