Better Electrophile

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Dochopeful13

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Can someone please explain why one of these electrophiles is better than other?

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@aldol16 might help you on this one, but based on what i know, the carbonyl carbon is more electrophilic than a tertiary one. Because the oxygen is closer to the electrons (sp2 hybridized) thus pulling electrons harder toward it making the Carbonyl carbon more electrophilic (electron loving , since electron are being pulled away from it). Whereas the other compound is sp3 hybridized, so the electron are far away from the nucleus.
 
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