Question 1

Addition of 2 mol of HCl to 1-butyne would yield:

Accepted Answer

A)  CH3CH2CH2CHCl2 
B)  CH3CH2CCl2CH3 
C)  CH3CH2CHClCH2Cl 
D)  CH3CH2CH=CHCl 
E)  CH3CHClCHClCH3 
A)  CH3CH2CH2CHCl2 
B)  CH3CH2CCl2CH3 
C)  CH3CH2CHClCH2Cl 
D)  CH3CH2CH=CHCl 
E)  CH3CHClCHClCH3

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

Predict the product(s)of the oxidation of 2,3,4-trimethyl-1,5-heptadiene with hot,alkaline KMnO4.

Accepted Answer

Question 4

Which alkene would you expect to be most reactive toward acid-catalyzed hydration?

Accepted Answer

A)  1 pentene 
B)  trans-2-pentene 
C)  cis-2-pentene 
D)  2-methyl-1butene 
E)  All of these would be equally reactive. 
A)  1 pentene 
B)  trans-2-pentene 
C)  cis-2-pentene 
D)  2-methyl-1butene 
E)  All of these would be equally reactive.

Question 5

Which reaction sequence would convert cis-2-butene to trans-2-butene?

Accepted Answer

A)  Br2/CCl4;then 2 NaNH2;then H2/Ni2B(P-2) 
B)  Br2/CCl4;then 2 NaNH2;then Li/liq.NH3 
C)  H3O+,heat;then cold dilute KMnO4 
D)  HBr;then NaNH2;then H2,Pt 
E)  None of these 
A)  Br2/CCl4;then 2 NaNH2;then H2/Ni2B(P-2) 
B)  Br2/CCl4;then 2 NaNH2;then Li/liq.NH3 
C)  H3O+,heat;then cold dilute KMnO4 
D)  HBr;then NaNH2;then H2,Pt 
E)  None of these

Question 6

What product would result from the following reaction?

Accepted Answer

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

Question 7

What is the major product for the following reaction?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E)  None of the above 
A) 
  
B) 
  
C) 
  
D) 
  
E)  None of the above

Question 8

Carbenes are frequently produced by $\alpha$-elimination reactions.These are reactions in which the proton being lost and the leaving group are ___________.

Accepted Answer

both attac

Question 9

Which of the following reactions would yield the final product as a racemic form?

Accepted Answer

A)  Cyclohexene + Br2,CCl4 
B)  Cyclohexene + cold,dilute KMnO4 and OH- 
C)  Cyclohexene + HCl 
D)  Cyclohexene + OsO4,then NaHSO3 
E)  Cyclohexene + D2/Pt 
A)  Cyclohexene + Br2,CCl4 
B)  Cyclohexene + cold,dilute KMnO4 and OH- 
C)  Cyclohexene + HCl 
D)  Cyclohexene + OsO4,then NaHSO3 
E)  Cyclohexene + D2/Pt

Question 10

Which reaction would give a meso compound as the product?

Accepted Answer

A)  Cyclopentene + Br2/CCl4 
B)  Cyclopentene + OsO4,then NaHSO3 
C)  Cyclopentene + H3O+ 
D)  Cyclopentene + Cl2,H2O 
E)  More than one of these 
A)  Cyclopentene + Br2/CCl4 
B)  Cyclopentene + OsO4,then NaHSO3 
C)  Cyclopentene + H3O+ 
D)  Cyclopentene + Cl2,H2O 
E)  More than one of these

Question 11

Select the structure of the major product formed in the following reaction.

Accepted Answer

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

Question 12

Which reagent or test could be used to distinguish between 3-pentyne and 1-pentyne?

Accepted Answer

A)  Br2/CCl4 
B)  IR examination 
C)  Concd.H2SO4 
D)  KMnO4,OH- 
E)  None of these 
A)  Br2/CCl4 
B)  IR examination 
C)  Concd.H2SO4 
D)  KMnO4,OH- 
E)  None of these

Question 13

What is the major product for the following reaction?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E)  More than one of the above 
A) 
  
B) 
  
C) 
  
D) 
  
E)  More than one of the above

Question 14

Consider the addition of HCl to 3-methyl-1-butene.The major product of the reaction would be:

Accepted Answer

A)  1-Chloro-2-methylbutane 
B)  1-Chloro-3-methylbutane 
C)  2-Chloro-2-methylbutane 
D)  2-Chloro-3-methylbutane 
E)  1-Chloropentane 
A)  1-Chloro-2-methylbutane 
B)  1-Chloro-3-methylbutane 
C)  2-Chloro-2-methylbutane 
D)  2-Chloro-3-methylbutane 
E)  1-Chloropentane

Question 15

What is the major product for the following reaction?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
E)  None of the above 
A) 
  
B) 
  
C) 
  
D) 
  
E)  None of the above

Question 16

What is the major product for the following reaction?

Accepted Answer

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

Question 17

The rule that correctly predicts the regiochemistry of most ionic additions to alkenes is called ____________________.

Accepted Answer

The answer of The rule that correctly predicts the regiochemistry...

Question 18

What is the major product for the following reaction?

Accepted Answer

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

Question 19

What is the major product of the following reaction sequence?

Accepted Answer

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

Question 20

Which of these compounds belongs to the class of substances commonly known as "halohydrins"?

Accepted Answer

A)  BrCH2CH2Cl 
B)  ClCH2CO2H 
C)  ICH2CH2OH 
D)  FCH2CH2NH2 
E)  HOCH2 COCl 
A)  BrCH2CH2Cl 
B)  ClCH2CO2H 
C)  ICH2CH2OH 
D)  FCH2CH2NH2 
E)  HOCH2 COCl

Exam 8: Alkenes and Alkynes Ii: Addition Reactions

Addition of 2 mol of HCl to 1-butyne would yield:

What is the major product for the following reaction?

Predict the product(s)of the oxidation of 2,3,4-trimethyl-1,5-heptadiene with hot,alkaline KMnO4.

Which alkene would you expect to be most reactive toward acid-catalyzed hydration?

Which reaction sequence would convert cis-2-butene to trans-2-butene?

What product would result from the following reaction?

What is the major product for the following reaction?

Carbenes are frequently produced by α\alphaα -elimination reactions.These are reactions in which the proton being lost and the leaving group are ___________.

Which of the following reactions would yield the final product as a racemic form?

Which reaction would give a meso compound as the product?

Select the structure of the major product formed in the following reaction.

Which reagent or test could be used to distinguish between 3-pentyne and 1-pentyne?

What is the major product for the following reaction?

Consider the addition of HCl to 3-methyl-1-butene.The major product of the reaction would be:

What is the major product for the following reaction?

What is the major product for the following reaction?

The rule that correctly predicts the regiochemistry of most ionic additions to alkenes is called ____________________.

What is the major product for the following reaction?

What is the major product of the following reaction sequence?

Which of these compounds belongs to the class of substances commonly known as "halohydrins"?

Carbon Compounds and Chemical Bonds

Representative Carbon Compounds: Functional Groups, Intermolecular Forces, and Infrared Ir Spectroscopy

An Introduction to Organic Reactions: Acids and Bases

Alkanes: Nomenclature, Conformational Analysis, and an Introduction to Synthesis

Stereochemistry: Chiral Molecules

Ionic Reactions - Nucleophilic Substitution and Elimination Reactions of Alkyl Halides

Alkenes and Alkynes I: Properties and Synthesis, Elimination Reactions of Alkyl Halides

Nuclear Magnetic Resonance and Mass Spectrometry: Tools for Structure Determination

Radical Reactions

Alcohols and Ethers

Alcohols From Carbonyl Compounds Oxidation-Reduction and Organometallic Compounds

Conjugated Unsaturated Systems

Aromatic Compounds

Reactions of Aromatic Compounds

Aldehydes and Ketones I Nucleophilic Addition to the Carbonyl Group

Aldehydes and Ketones Ii Aldol Reactions

Carboxylic Acids and Their Derivatives Nucleophilic Addition - Elimination at the Acyl Carbon

Synthesis and Reactions of Beta-Dicarbonyl Compounds: More Chemistry of Enolate Ions

Amines

Phenols and Aryl Halides: Nucleophilic Aromatic Substitution

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids and Protein Synthesis

Filters

Predict the product(s)of the oxidation of 2,3,4-trimethyl-1,5-heptadiene with hot,alkaline KMnO₄.

Carbenes are frequently produced by $\alpha$ -elimination reactions.These are reactions in which the proton being lost and the leaving group are ___________.