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प्रश्न
Which compound in the following pair will react faster in SN2 reaction with OH−?
CH2=CHBr or CH2=CH-CH2Br
लघु उत्तरीय
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उत्तर
CH2=CH–CH2Br (allyl bromide) reacts faster in an SN2 reaction with OH− than CH2=CHBr (vinyl bromide) because SN2 cannot proceed at a vinylic (sp2) carbon, while the allylic position is highly favorable for SN2 due to sp3 hybridization and resonance stabilization.
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