EXAM 3 practice

EXAM 3 practice - Practice Problems for Exam 3 CHEM 231...

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Practice Problems for Exam 3 CHEM 231; Organic Chemistry I Spring 2006 1. What is the major product of the following reaction? H 2 O H 2 SO 4 HO OH OH OH a b c d 2. What is the major product of the following reaction?
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1. BH 3 2. H 2 O 2 , NaOH, H 2 0 HO OH OH OH a b c d OH e g. BOTH answers c and e 3. What is the best choice of reagent to perform the following transformation? ? HO CH 2 Br a. Br 2 b. Br 2 /H 2 O c. HBr d. N-bromosuccinimide 4. What is the best choice of reagent to perform the following transformation? ? O O a. O 3 ; followed by (CH 3 ) 2 S
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b. Hg(OAc) 2 and H 2 O; followed by NaBH 4 c. BH 3 ; followed by H 2 O 2 , NaOH, H 2 O d. OsO 4 ; followed by NaHSO 3 5. Which of the following alkenes are likely to undergo rearrangement upon acid- catalyzed hydration? a. Ethene b. 3,3-dimethyl-1-butene c. 1-propene d. 2-methyl-2-butene 6. Which of the following molecules are chiral? H 3 C CH 3 H H Br CH 3 H H H Br H CH 3 H H CH 3 CH 2 CH 3 1 2 3 a. Only 1 b. Only 1 and 2 c. Only 2 and 3 d. 1, 2 and 3 7. Which of the following molecules are chiral? 1 2 3 a. Only 1 b. Only 1 and 2 c. Only 2 and 3
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d. 1, 2 and 3 8. Which of the following have an S configuration? H 3 CH 2 C H CH 2 CH 3 CH(CH 3 ) 2 CH 2 CH 3 OH CH 3 H CH 3 CH=CH 2 H H 3 C 1 2 3 a. Only 1 b. Only 2 c. Only 1 and 2 d. 1, 2 and 3 9. Which of the following structures are different from the other three? Br
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EXAM 3 practice - Practice Problems for Exam 3 CHEM 231...

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