Name: 
 

5206



Short Answer
 
 
Exhibit 9-3
Assign R, S configurations to each indicated chirality center in the molecules below.

nar001-1.jpg
 

 1. 

Refer to Exhibit 9-3. The configuration of this carbon atom (A) is _____.
 

 2. 

Refer to Exhibit 9-3. The configuration of this carbon atom (B) is _____.
 

 3. 

Refer to Exhibit 9-3. The configuration of this carbon atom (C) is _____.
 

 4. 

Refer to Exhibit 9-3. The configuration of this carbon atom (D) is _____.
 

 5. 

Refer to Exhibit 9-3. The configuration of this carbon atom (E) is _____.
 
 
Exhibit 9-4
Consider the structure of streptimidone to answer the following question(s).

nar002-1.jpg
 

 6. 

Refer to Exhibit 9-4. Assign R or S configuration to each chirality center indicated in streptimidone.
 

 7. 

Refer to Exhibit 9-4. Based on the number of chirality centers, how many stereoisomers of streptimidone are possible?
 

 8. 

Refer to Exhibit 9-4. Will streptimidone have a meso stereoisomer? Explain your answer.
 
 
Exhibit 9-5
Label each pair of stereoisomers below as:

a.enantiomers
b.diastereomers
c.identical

Place the letter of the correct answer in the blank to the left of the pair of stereoisomers.
 

 9. 

_____ sa009-1.jpg
 

 10. 

_____ sa010-1.jpg
 

 11. 

_____ sa011-1.jpg
 

 12. 

_____ sa012-1.jpg
 

 13. 

_____ sa013-1.jpg
 

 14. 

_____ sa014-1.jpg
 

 15. 

_____ sa015-1.jpg
 
 
Exhibit 10-1
Give the name for each of the following alkyl halides.
 

 16. 

Name:

sa016-1.jpg
 

 17. 

Name:

CHI3
 

 18. 

Name:

sa018-1.jpg, Halothane
 

 19. 

Name:

CH2Cl2
 
 
Exhibit 10-4
Consider the reaction below to answer the following question(s).

nar005-1.jpg
 

 20. 

Refer to Exhibit 10-4. Place asterisks(*) at all allylic positions in compound A.
 

 21. 

Refer to Exhibit 10-4. Draw the resonance forms of the allylic radical intermediate that accounts for the formation of B and C.
 

 22. 

Refer to Exhibit 10-4. D and E, below, are minor products in this reaction. Explain why.

sa022-1.jpg
 
 
Exhibit 10-6
Provide structures for the reactants, intermediates, or products, as indicated, in the following reactions. Draw the structures in the boxes provided.
 

 23. 

sa023-1.jpg
 

 24. 

sa024-1.jpg
 

 25. 

sa025-1.jpg
 

 26. 

sa026-1.jpg
 

 27. 

sa027-1.jpg
 

 28. 

sa028-1.jpg
 

 29. 

sa029-1.jpg
 

 30. 

sa030-1.jpg
 
 
Exhibit 10-5
Choose the best reagent or sequence of reagents from the list provided below for carrying out the following transformations. Place the letter of your response to the left of the reaction.

a.PBr3d.SOCl2, pyridine
b.HCl (gas), ethere.HBr (gas), ether
c.1.Mg, etherf.1.Mg, ether
 2.D2O 2.NBS
 

 31. 

_____ sa031-1.jpg
 

 32. 

_____ sa032-1.jpg
 

 33. 

_____ sa033-1.jpg
 
 
Exhibit 11-1
Circle
your response in each set below.
 

 34. 

Circle the least reactive compound in an SN2 reaction.

sa034-1.jpg
 

 35. 

Circle the best leaving group in an elimination reaction.

sa035-1.jpg
 

 36. 

Circle the best nucleophile in a substitution reaction at a primary carbon.

sa036-1.jpg
 

 37. 

Circle the least reactive compound in an SN1 reaction.

sa037-1.jpg
 

 38. 

Circle the best solvent for an SN2 reaction.

sa038-1.jpg
 
 
Exhibit 11-3
Consider the pair of reactions below to answer the following question(s).

a.nar009-1.jpg
  
 or
  
b.nar009-2.jpg
 

 39. 

Refer to Exhibit 11-3.

a.Which reaction above is faster?
b.Explain your answer to the question in part a.
 

 40. 

Refer to Exhibit 11-3. The kinetics of these reactions are:

a.second-order
b.first-order in nucleophile
c.not measurable
d.first-order in alkyl halide
 
 
Exhibit 11-4
Consider the pair of reactions below to answer the following question(s).

a.nar010-1.jpg
  
 or
  
b.nar010-2.jpg
 

 41. 

Refer to Exhibit 11-4. The alkyl bromide starting materials in these reactions are classified as:

a.3°
b.2°
c.1°
d.4°
 

 42. 

Refer to Exhibit 11-4. The solvent in these reactions is:

a.nonpolar aprotic
b.polar aprotic
c.polar protic
d.nonpolar protic
 

 43. 

Refer to Exhibit 11-4. The nucleophile in these reactions is:

a.K+
b.alkyl group
c.Br-
d.I-
 

 44. 

Refer to Exhibit 11-4. Which reaction is faster?
 

 45. 

Refer to Exhibit 11-4. The mechanism for these reactions is:

a.SN2
b.E2
c.SN1
d.E1
 
 
Exhibit 11-5
Consider the pair of reactions below to answer the following question(s).

a.nar011-1.jpg
  
 or
  
b.nar011-2.jpg
 

 46. 

Refer to Exhibit 11-5.

a.Which reaction above is faster?
b.Explain your answer to the question in part a.
 

 47. 

The original question has been combined with question #17 as part b.  This placeholder question is here to maintain the integrity of the numbering system between the printed copy and ExamView.  Therefore, it has been marked "do not use on test" in ExamView's question information dialog.  As a result, this placeholder question is automatically prevented from being chosen as a test question.
 

 48. 

Refer to Exhibit 11-5. Doubling the concentration of potassium hydroxide in these reactions:

a.causes the reaction mechanism to change
b.halves the rate of reaction
c.has no effect on the rate of reaction
d.doubles the rate of reaction
 

 49. 

Refer to Exhibit 11-5. The mechanism for these reactions is:

a.SN2
b.E2
c.SN1
d.E1
 
 
Exhibit 11-6
Consider the reaction below to answer the following question(s).

nar012-1.jpg
 

 50. 

Refer to Exhibit 11-6. The substrate in the reaction is:
 

 51. 

Refer to Exhibit 11-6. Compound B is the:

a.SN2 product
b.SN1 product
c.E2 product
d.E1 product
 

 52. 

Refer to Exhibit 11-6. Compound C is the:

a.SN2 product
b.SN1 product
c.E2 product
d.E1 product
 

 53. 

Refer to Exhibit 11-6. Write the complete reaction mechanism for the formation of Compound C in this reaction.
 
 
Exhibit 11-8
Consider the reaction below to answer the following question(s):

nar013-1.jpg
 

 54. 

Refer to Exhibit 11-8. Write the product that results from the electron flow in the reaction, clearly indicating any stereochemistry.
 

 55. 

Refer to Exhibit 11-8. Draw a Newman projection of the reactive conformation of the starting material.
 

 56. 

Refer to Exhibit 11-8. The mechanism of this reaction is:

a.SN1
b.SN2
c.E1
d.E2
 
 
Exhibit 11-10
Draw the structure of the major organic product(s) for each of the following reactions. Indicate the stereochemistry for each reaction when appropriate.
 

 57. 

sa057-1.jpg
 

 58. 

sa058-1.jpg
 

 59. 

sa059-1.jpg
 

 60. 

sa060-1.jpg
 

 61. 

sa061-1.jpg
 

 62. 

sa062-1.jpg
 

 63. 

sa063-1.jpg
 

 64. 

sa064-1.jpg
 

 65. 

sa065-1.jpg
 

 66. 

sa066-1.jpg
 
 
Exhibit 12-1
Select the most reasonable formula for the compounds with the following mass spectral data.
 

 67. 

Refer to Exhibit 12-1. M+ at m/z = 101 with a minor M+1 peak

a.C5H6Cl
b.C5H12N2
c.C6H15N
d.C9H12O
 

 68. 

Refer to Exhibit 12-1. M+ m/z = 136 and M+ at m/z = 138 of approximately equal intensity

a.C6H13OCl
b.C4H9Br
c.C10H16
d.C9H12O
 
 
Exhibit 12-2
Use the data below to answer the following question(s).

Loratidine is the active ingredient in the antihistamine Claritin®. Mass spectral analysis of loratidine shows M+ at m/z = 382 and M+ at m/z = 384 in an approximate ratio of 3:1 in intensity.
 

 69. 

Refer to Exhibit 12-2. The mass spectral data indicates that loratidine contains:

a.fluorine
b.chlorine
c.bromine
d.iodine
 

 70. 

Refer to Exhibit 12-2. Loratidine is known to contain nitrogen. What is the minimum number of nitrogens in loratidine?
 
 
Exhibit 12-5
Refer to the mass spectrum of 2-methylbutane shown below to answer the following question(s).

nar017-1.jpg

Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
 

 71. 

Refer to Exhibit 12-5. What peak represents M+?
 

 72. 

Refer to Exhibit 12-5. What peak represents the base peak?
 

 73. 

Refer to Exhibit 12-5. Propose structures for fragment ions at m/z = 57, 43, and 29.
 
 
Exhibit 12-6
MATCH each of the following groups of bond-types to the region of the infrared spectrum in which their absorptions occur. Place the letter of the region in the blank to the left of the bond-type.

a.4000 to 2500 cm-1
b.2500 to 2000 cm-1
c.2000 to 1500 cm-1
d.below 1500 cm-1
 

 74. 

_____ C-C, C-O, C-N, and C-X single-bond vibrations.
 

 75. 

_____ C=O, C=N, and C=C bond absorptions.
 

 76. 

_____ N-H, C-H, and O-H stretching and bending motions.
 

 77. 

_____ triple bond stretching vibrations.
 
 
Exhibit 12-7
At what approximate positions might the compounds below show IR absorptions?
 

 78. 

sa078-1.jpg
 

 79. 

sa079-1.jpg
 
 
Exhibit 12-8
MATCH
a structure from the list below to the following IR spectra. Place the letter of the structure in the blank provided.

nar020-1.jpg
 

 80. 

_____

sa080-1.jpg

Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
 

 81. 

_____

sa081-1.jpg

Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
 

 82. 

_____

sa082-1.jpg

Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
 

 83. 

Which structure of molecular formula C4H8Cl2 fits both the 1H NMR and 13C NMR spectra shown below?

a.sa083-1.jpg
b.sa083-2.jpg
c.sa083-3.jpg
d.sa083-4.jpg

sa083-5.jpg

sa083-6.jpg

Spectra obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
 
 
Exhibit 13-12
Answer the question(s) for the compound whose 1H NMR spectra is shown below.

C8H7ClO

nar021-1.jpg

Spectrum obtained from: SDBSWeb: http://www.aist.go.jp/RIODB/SDBS/
 

 84. 

Refer to Exhibit 13-12. Calculate the degree of unsaturation in this compound.
 

 85. 

Refer to Exhibit 13-12. Describe the signals that occur between 7 and 8 d in terms of integration, splitting and chemical shift.
 

 86. 

Refer to Exhibit 13-12. Describe the signal at 2.6 d in terms of integration, splitting and chemical shift.
 

 87. 

Refer to Exhibit 13-12. Propose a structure for this compound.
 



 
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