Chemistry > QUESTIONS & ANSWERS > Rutgers University ORGO 307 Chapter_19 —ENOLATE ANIONS AND ENAMINES QUESTIONS AND ANSWERS (All)

Rutgers University ORGO 307 Chapter_19 —ENOLATE ANIONS AND ENAMINES QUESTIONS AND ANSWERS

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CHAPTER 19—ENOLATE ANIONS AND ENAMINES MULTIPLE CHOICE 1. How many different aldols (-hydroxyaldehydes), including constitutional isomers and stereoisomers, are formed upon treatment of butana... l with base? a. 1 b. 2 c. 3 d. 4 ANS: D 2. How many -hydroxyketones, including constitutional isomers and stereoisomers, are formed upon treatment of acetone with base? a. 1 b. 2 c. 3 d. 4 ANS: A 3. How many different -hydroxyaldehydes and -hydroxyketones, including constitutional isomers and stereoisomers, are formed upon treatment of a mixture of acetone and benzaldehyde with base? a. 1 b. 2 c. 3 d. 4 ANS: C 4. How many different -hydroxyaldehydes and -hydroxyketones, including constitutional isomers and stereoisomers, are formed upon treatment of a mixture of acetone and acetophenone with base? a. 4 b. 6 c. 9 d. 12 ANS: B 5. How many different -hydroxyaldehydes and -hydroxyketones, including constitutional isomers and stereoisomers, are formed upon treatment of a mixture of butanal and acetone with base? a. 4 b. 6 c. 9 d. 12 ANS: CBrown Organic Chemistry 6e Test Bank 2 6. Which of the following are intermediates in the acid catalyzed aldol reaction of propanal to form 2- methyl-2-pentenal? 1. enol 2. enolate 3. tetrahedral carbonyl intermediate 4. aldol a. only 1 and 2 b. only 1, 3 and 4 c. only 2, 3 and 4 d. 1, 2, 3 and 4 ANS: B 7. Which of the following are intermediates in the base catalyzed aldol reaction of propanal to form 2- methyl-2-pentenal? 1. enol 2. enolate 3. tetrahedral carbonyl intermediate 4. aldol a. only 1 and 2 b. only 1, 3 and 4 c. only 2, 3 and 4 d. 1, 2, 3 and 4 ANS: C 8. What is the major organic product obtained from the following reaction? a. 1 b. 2 c. 3 d. 4 ANS: ABrown Organic Chemistry 6e Test Bank 3 9. What is the major organic product obtained from the following reaction? a. 1 b. 2 c. 3 d. 4 ANS: A 10. What is the major organic product obtained from the following reaction? a. 1 b. 2 c. 3 d. 4 ANS: ABrown Organic Chemistry 6e Test Bank 4 11. What is the major organic product obtained from the following reaction? a. 1 b. 2 c. 3 d. 4 ANS: A 12. Which of the following compounds can be prepared by an aldol condensation by treating a single carbonyl compound with base? a. 1 b. 2 c. 3 d. 4 ANS: ABrown Organic Chemistry 6e Test Bank 5 13. Which of the following compounds can be prepared by an aldol condensation by treating a single carbonyl compound with base? a. 1 b. 2 c. 3 d. 4 ANS: B 14. Which of the following compounds can be prepared by a mixed aldol condensation by treatment of a mixture of two carbonyl compounds and NaOH? a. 1 b. 2 c. 3 d. 4 ANS: A [Show More]

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