Exam 2 - S2002

Exam 2 - S2002 - March 27th, 2002 Page 1 of 16 March 27th,...

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March 27th, 2002 Name _________________________ Dr. S. A. Dandekar CHEM 2380 Exam 2 (100 points) Section A: 60 points Answer ANY 20 questions from this section (3 points each) 1. Which reagent(s) would you use to carry out the following transformation? Isopropylbenzene ————> 2- and 4-chloro-1-isopropylbenzene a. Cl 2 , light b. Cl 2 , FeCl 3 c. SOCl 2 d. C 2 H 5 Cl, AlCl 3 e. HCl, peroxides 2. What would you expect to be the major product obtained from the following reaction? a. I b. II c. III d. IV e. Equal amounts of II and IV 3. Which of the following structures does not contribute to the resonance hybrid of the intermediate formed when bromobenzene undergoes para-chlorination? a. I b. II Page 1 of 16 March 27th, 2002 8/31/2007 http://www.chem.unt.edu/CHEM2380/2380ex2.htm
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c. III d. IV e. All of these contribute. Page 2 of 16 March 27th, 2002 8/31/2007 http://www.chem.unt.edu/CHEM2380/2380ex2.htm
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Exam 2 (100 points)--Page 2 4. The ortho/para product ratio is expected to be the smallest for the bromination of which of these? a. Toluene b. Isopropylbenzene c. Butylbenzene d. sec -Butylbenzene e. tert -Butylbenzene 5. What would you expect to be the major product obtained from the mononitration of m - dichlorobenzene? a. I b. II c. III d. Equal amounts of I and II e. Equal amounts of I, II and III 6. What would be the major product of the following reaction? a. I b. II c. III d. IV e. V 7. This substituent deactivates the benzene ring towards electrophilic substitution but directs the incoming group chiefly to the ortho- and para- positions: a. —OCH 2 CH 3 b. —NO 2 c. —F d. —CF 3 e. —NHCOCH 3 Page 3 of 16 March 27th, 2002 8/31/2007 http://www.chem.unt.edu/CHEM2380/2380ex2.htm
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Exam 2 (100 points)--Page 3 8. When undergoes Friedel-Crafts acylation, the chief product is which of these? a. I b. II c. III d. IV e. None of these: no reaction will occur. 9. What feature is common to
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This test prep was uploaded on 04/14/2008 for the course CHEM 2370 taught by Professor Dandekar during the Fall '07 term at North Texas.

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Exam 2 - S2002 - March 27th, 2002 Page 1 of 16 March 27th,...

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