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Reactions of Alkyl Halides

Reactions of Aldehydes and Ketones

Because the reactivity only comes about through keto-enol tautomerism, some students forget to consider reactions at the α carbon when presented with an aldehyde or ketone in an MCAT question. For example, the α carbon of an enolate can act as a nucleophile. It can be used to react by nucleophilic substitution with alkyl halides. If you aren't thinking about keto-enol tautomerism, you would have a difficult time making the connection to such a product in the array of multiple choice answers.

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