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Lecture 31 - α-Carbon 2 Keto and Enol Tautomers(23.2 •...

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1 Reading for Wednesday Chapter 23: 23.6-23.9 3 rd Exam This Thursday! April 14 th 6-7:30 PM 120 Budig Exam 3 will cover Chapters 20, 21 and 22 (all sections except those skipped) Exam 3 Review Session Tuesday April 12 th 6:00 PM 1001 Malott Mon. 6:00-7:30 pm MAL 3092 Tues. 2:30-4:00 PM MAL 2007 PLUS Sessions THIS WEEK Chapter 23 Substitution Reactions of Carbonyl Compounds at the α Carbon Chapters 20-22 focused on reactions of carbonyl compounds at the C=O carbon In Chapter 23 we begin looking at reactions at the
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Unformatted text preview: α-Carbon 2 Keto and Enol Tautomers (23.2) • We first encountered keto-enol tautomerization in Chapter 11: aldehyde Keto and Enol Tautomers (23.2) • Keto form tends to dominate at equilibrium because of greater stability • This is because C=O bonds are stronger than C=C bonds Keto and Enol Tautomers (23.2) • In some compounds, such as β-diketones, the enol form dominates Enolates (23.3) • Formed when a base removes an α-proton from a carbonyl compound...
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