Vollhardt,Chapter23

Vollhardt,Chapter23 - Chapter 23: 1. What is a...

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Chapter 23: 1. What is a beta-ketoester? a. A compound with a carbonyl functionality two carbons from the ether carbon of an ester. b. A compound with a carbonyl functionality two carbons from the carbonyl of an ester. c. A compound with a carbonyl functionality two carbons from the ether oxygen of an ester. d. A compound with a carbonyl functionality two carbons from the carbon next to the carbonyl of an ester. Answer: B 2. What does the Dieckmann condensation produce? a. Linear beta-ketoesters. b. Branched chain or cyclic beta-ketoesters. c. Branched chain 3-ketoesters. d. Cyclic 3-ketoesters. Answer: D 3. What causes the methylene hydrogens of beta-ketocarbonyls to be so basic? a. Resonance stabilizations. b. The electronegativity of the two proximate oxygens. c. The presence of the carboxylic acid functionality. d. They aren’t; they are acidic. Answer: D 4. The decarboxylation of 3-ketoacids produces what two products? a.
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Vollhardt,Chapter23 - Chapter 23: 1. What is a...

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