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Chapter 22 November 18

Chapter 22 November 18 - Enolates are better nucleophiles...

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1 Enhanced Acidity of Beta­Carbonyls Example: When a hydrogen is flanked by two carbonyl groups, its acidity increases The enolate's negative charge is delocalized over both of the adjacent carbonyl groups
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3 Reactivity of Enolate Ions Resonace and Reactivity: Enolates are more reactive than enols
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Unformatted text preview: Enolates are better nucleophiles than enols 4 Enolate Ions and α ­halogenation: General Reaction: Complications: The Haloform Reaction 5 Alkylation of Enolate Ions: General Example: 6 Malonic Ester Synthesis General Reaction: Diethyl propanedioate:...
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