Question 1

What would be the major product(s)of the following reaction?

Accepted Answer

A) I and II 
B) II and III 
C) I and III 
D) IV 
E) None of these choices. 
A) I and II 
B) II and III 
C) I and III 
D) IV 
E) None of these choices.

Question 2

What is the major product for the following reaction?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 3

Which of the following alcohols would probably undergo dehydration using 25% sulfuric acid below 100 oC?

Accepted Answer

A) II,IV,V 
B) I,II,III 
C) III and IV 
D) III,IV,V 
E) all can be dehydrated 
A) II,IV,V 
B) I,II,III 
C) III and IV 
D) III,IV,V 
E) all can be dehydrated

Question 4

Which compound listed below would you expect to be the major product when 2-bromo-2-methylbutane is refluxed with KOH/ethanol?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 5

Draw an arrow-pushing mechanism to justify the following transformation:

Accepted Answer

The answer of Draw an arrow-pushing mechanism to justify the...

Question 6

In dehydrohalogenation reactions the Zaitsev product will always be the major product produced in the reaction.

Accepted Answer

A) True 
 B)False

Question 7

Predict the product(s)for the following reaction sequence.

Accepted Answer

A)    
B)    
C)    
D)    
E) None of these choices. 
A)    
B)    
C)    
D)    
E) None of these choices.

Question 8

What would be the major product(s)of the following reaction?

Accepted Answer

A) I and II 
B) I,II,and III 
C) III 
D) I,II,and IV 
E) None of these choices. 
A) I and II 
B) I,II,and III 
C) III 
D) I,II,and IV 
E) None of these choices.

Question 9

Select the structure of 4-ethyl-2,3-dimethyl-2-heptene.

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 10

Name the following compound:

Accepted Answer

A) (S,
E) -3-methyl-5-phenyl-3-heptene 
B) (R,
E) -3-methyl-5-phenyl-3-heptene 
C) (S,
E) -3-methyl-5-benzyl-3-heptene 
D) (S,Z)-3-methyl-5-phenyl-3-heptene 
E) (R,Z)-3-methyl-5-phenyl-3-heptene 
A) (S,
E) -3-methyl-5-phenyl-3-heptene 
B) (R,
E) -3-methyl-5-phenyl-3-heptene 
C) (S,
E) -3-methyl-5-benzyl-3-heptene 
D) (S,Z)-3-methyl-5-phenyl-3-heptene 
E) (R,Z)-3-methyl-5-phenyl-3-heptene

Question 11

Neopentyl alcohol,(CH3)3CCH2OH,cannot be dehydrated to an alkene without rearrangement.What is the chief product of dehydration?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 12

In acid catalyzed dehydration of alcohol,the acid catalyst is always regenerated in the reaction process.

Accepted Answer

A) True 
 B)False

Question 13

When an elimination reaction gives the less substituted alkene as the major product,we say that the elimination follows ___'s rule.

Accepted Answer

The answer of When an elimination reaction gives the less...

Question 14

Which of the following reactions would yield 2-pentyne?

Accepted Answer

A)    
B)    
C)    
D)    
E)    
A)    
B)    
C)    
D)    
E)

Question 15

What would be the major product of the following reaction?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) Equal amounts of I and III. 
A) I 
B) II 
C) III 
D) IV 
E) Equal amounts of I and III.

Question 16

What "new",more stable,carbocation(s)may be formed when the following carbocation undergoes spontaneous rearrangement?

Accepted Answer

The answer of What "new",more stable,carbocation(s)may be formed when the...

Question 17

Which reaction would yield 2-butyne?

Accepted Answer

A) CH3C$\equiv$C:-Na+ + CH3Br $\to$ 
B) CH3CH2Br + HC$\equiv$C:-Na+$\to$ 
C) CH3:-Na+ + HC$\equiv$CCH3 $\to$ 
D) More than one of these choices. 
E) None of these choices. 
A) CH3C$\equiv$C:-Na+ + CH3Br $\to$ 
B) CH3CH2Br + HC$\equiv$C:-Na+$\to$ 
C) CH3:-Na+ + HC$\equiv$CCH3 $\to$ 
D) More than one of these choices. 
E) None of these choices.

Question 18

Which molecule would have the lowest heat of hydrogenation?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) V 
A) I 
B) II 
C) III 
D) IV 
E) V

Question 19

The product(s)for the following reaction would mainly be dictated by which mechanism?

Accepted Answer

A) SN1 
B) SN2 
C) E1 
D) E2 
E) None of these choices. 
A) SN1 
B) SN2 
C) E1 
D) E2 
E) None of these choices.

Question 20

In dehydration reactions the Zaitsev product will almost always be the major product produced in the reaction.

Accepted Answer

A) True 
 B)False

Exam 7: Alkenes and Alkynes I

What would be the major product(s)of the following reaction?

What is the major product for the following reaction?

Which of the following alcohols would probably undergo dehydration using 25% sulfuric acid below 100 oC?

Which compound listed below would you expect to be the major product when 2-bromo-2-methylbutane is refluxed with KOH/ethanol?

Draw an arrow-pushing mechanism to justify the following transformation:

In dehydrohalogenation reactions the Zaitsev product will always be the major product produced in the reaction.

Predict the product(s)for the following reaction sequence.

What would be the major product(s)of the following reaction?

Select the structure of 4-ethyl-2,3-dimethyl-2-heptene.

Name the following compound:

Neopentyl alcohol,(CH3)3CCH2OH,cannot be dehydrated to an alkene without rearrangement.What is the chief product of dehydration?

In acid catalyzed dehydration of alcohol,the acid catalyst is always regenerated in the reaction process.

When an elimination reaction gives the less substituted alkene as the major product,we say that the elimination follows ___'s rule.

Which of the following reactions would yield 2-pentyne?

What would be the major product of the following reaction?

What "new",more stable,carbocation(s)may be formed when the following carbocation undergoes spontaneous rearrangement?

Which reaction would yield 2-butyne?

Which molecule would have the lowest heat of hydrogenation?

The product(s)for the following reaction would mainly be dictated by which mechanism?

In dehydration reactions the Zaitsev product will almost always be the major product produced in the reaction.

The Basics

Families of Carbon

Acids and Bases

Nomenclature and Conformations of Alkanes and Cycloalkanes

Stereochemistry

Nucleophilic Reactions

Alkenes and Alkynes II

Nuclear Magnetic Resonance and Mass Spectrometry

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Reactions at the Α Carbon of Carbonyl Compounds

Condensation and Conjugate Addition Reactions of Carbonyl Compounds

Amines

Transition Metal Complexes

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Which of the following alcohols would probably undergo dehydration using 25% sulfuric acid below 100 ^oC?

Neopentyl alcohol,(CH₃)₃CCH₂OH,cannot be dehydrated to an alkene without rearrangement.What is the chief product of dehydration?