Question 1

The correct IUPAC name for the following structure is ________.

Accepted Answer

A)  (Z) 4-isopropyl-4-hepten-2-yne 
B)  (
E)  4-isopropyl-3-hepten-5-yne 
C)  (
E)  4-isopropyl-4-hepten-2-yne 
D)  (Z) 4-isopropyl-3-hepten-5-yne 
A)  (Z) 4-isopropyl-4-hepten-2-yne 
B)  (
E)  4-isopropyl-3-hepten-5-yne 
C)  (
E)  4-isopropyl-4-hepten-2-yne 
D)  (Z) 4-isopropyl-3-hepten-5-yne

Question 2

Why are terminal alkynes more acidic then other hydrocarbons?

Accepted Answer

The carbanion which results upon deproto

Question 3

Which of the following reagents should be used to convert an internal alkyne to an

Accepted Answer

A)  KMnO4, H2O, neutral 
B)  O3 then H2O 
C)  Sia2BH then H2O2 
D)  Na, NH3 
E)  HgSO4, H2SO4 
A)  KMnO4, H2O, neutral 
B)  O3 then H2O 
C)  Sia2BH then H2O2 
D)  Na, NH3 
E)  HgSO4, H2SO4

Question 4

Draw an acceptable structure for (S)-5-phenyloct-2-yne.

Accepted Answer

The answer of Draw an acceptable structure for (S)-5-phenyloct-2-yne....

Question 5

What is the major organic product that results when 3-heptyne is treated with sodium metal in ammonia?

Accepted Answer

A)  2-heptyne 
B)  (Z)-2-heptene 
C)  (Z)-3-heptene 
D)  (
E) -3-heptene 
E)  heptane 
A)  2-heptyne 
B)  (Z)-2-heptene 
C)  (Z)-3-heptene 
D)  (
E) -3-heptene 
E)  heptane

Question 6

________ is produced when 1 equivalent of HBr is added to hex-1-yne in the presence of peroxides.

Accepted Answer

A)  2-Bromohex-1-ene 
B)  E-1-Bromohex-1-ene 
C)  Z-1-Bromohex-1-ene 
D)  A mixture of E and Z isomers of 1-bromohex-1-ene 
E)  E-2-Bromohex-2-ene 
A)  2-Bromohex-1-ene 
B)  E-1-Bromohex-1-ene 
C)  Z-1-Bromohex-1-ene 
D)  A mixture of E and Z isomers of 1-bromohex-1-ene 
E)  E-2-Bromohex-2-ene

Question 7

Provide the major organic product of the reaction shown below.

Accepted Answer

The answer of Provide the major organic product of the...

Question 8

Provide the major organic product of the reaction below.

Accepted Answer

The answer of Provide the major organic product of the...

Question 9

Give the IUPAC name for CHS1U1B13S1U1B0CH=CHCH=CHC≡CCHS1U1B13S1U1B0

Accepted Answer

The answer of Give the IUPAC name for CHS1U1B13S1U1B0CH=CHCH=CHC≡CCHS1U1B13S1U1B0...

Question 10

Explain why the synthetic route shown below would be unsuccessful.
H≡C≡C:S1U1P1-S1S1P0NaS1U1P1+S1S1P0
  
C-C≡C-CHS1U1B12S1U1B0CHS1U1B13S1U1B0
3. (CHS1U1B13S1U1B0)S1U1B13S1U1B0CBr

Accepted Answer

The tert-butyl bromide would not undergo

Question 11

In the addition of hydrogen bromide to alkynes in the absence of peroxides, which of the following species is thought to be an intermediate?

Accepted Answer

A)  vinyl anion 
B)  vinyl cation 
C)  vinyl radical 
D)  carbene 
E)  none of the above 
A)  vinyl anion 
B)  vinyl cation 
C)  vinyl radical 
D)  carbene 
E)  none of the above

Question 12

When 2,2-dibromobutane is heated at 200°C in the presence of molten KOH, what is the major organic product?

Accepted Answer

A)  1-bromobut-1-yne 
B)  1-bromobut-2-yne 
C)  but-1-yne 
D)  but-2-yne 
E)  but-1-ene 
A)  1-bromobut-1-yne 
B)  1-bromobut-2-yne 
C)  but-1-yne 
D)  but-2-yne 
E)  but-1-ene

Question 13

Give the IUPAC name for Cl3CCH2CH2CH2C≡CH.

Accepted Answer

6,6,6-tric

Question 14

Provide the major organic product of the reaction below.

Accepted Answer

The answer of Provide the major organic product of the...

Question 15

Provide the structure of the major organic product(s) in the reaction below.

Accepted Answer

The answer of Provide the structure of the major organic...

Question 16

Describe a sequence of reactions by which hexan-2-ol can be straightforwardly prepared from hex-1-yne.

Accepted Answer

1. HgSO₄, H

Question 17

What conditions could be used to isomerize hept-2-yne to hept-1-yne?

Accepted Answer

1. NaNH₂, 1

Question 18

Provide the structure of the major organic product(s) in the reaction sequence below.
CH3CH2C≡CH   →

Accepted Answer

CH<sub>3</

Question 19

How many distinct terminal alkynes exist with a molecular formula of C5H8?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 20

Provide the major organic product of the reaction shown below.

Accepted Answer

The answer of Provide the major organic product of the...

Exam 9: Alkynes

The correct IUPAC name for the following structure is ________.

Why are terminal alkynes more acidic then other hydrocarbons?

Which of the following reagents should be used to convert an internal alkyne to an

Draw an acceptable structure for (S)-5-phenyloct-2-yne.

What is the major organic product that results when 3-heptyne is treated with sodium metal in ammonia?

________ is produced when 1 equivalent of HBr is added to hex-1-yne in the presence of peroxides.

Provide the major organic product of the reaction shown below.

Provide the major organic product of the reaction below.

Give the IUPAC name for CH3CH=CHCH=CHC≡CCH3

Explain why the synthetic route shown below would be unsuccessful. H≡C≡C:-Na+ C-C≡C-CH2CH3 3. (CH3)3CBr

In the addition of hydrogen bromide to alkynes in the absence of peroxides, which of the following species is thought to be an intermediate?

When 2,2-dibromobutane is heated at 200°C in the presence of molten KOH, what is the major organic product?

Give the IUPAC name for Cl3CCH2CH2CH2C≡CH.

Provide the major organic product of the reaction below.

Provide the structure of the major organic product(s) in the reaction below.

Describe a sequence of reactions by which hexan-2-ol can be straightforwardly prepared from hex-1-yne.

What conditions could be used to isomerize hept-2-yne to hept-1-yne?

Provide the structure of the major organic product(s) in the reaction sequence below. CH3CH2C≡CH →

How many distinct terminal alkynes exist with a molecular formula of C5H8?

Provide the major organic product of the reaction shown below.

Introduction and Review

Structure and Properties of Organic Molecules

Structure and Stereochemistry of Alkanes

The Study of Chemical Reactions

Stereochemistry

Alkyl Halides: Nucleophilic Substitution and Elimination

Structure and Synthesis of Alkenes

Reactions of Alkenes

Structure and Synthesis of Alcohols

Reactions of Alcohols

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Ethers, Epoxides, and Thioethers

Conjugated Systems, Orbital Symmetry, and Ultraviolet Spectroscopy

Aromatic Compounds

Reactions of Aromatic Compounds

Ketones and Aldehydes

Amines

Carboxylic Acids

Carboxylic Acid Derivatives

Condensations and Alpha Substitutions of Carboxyl Compounds

Carbohydrates and Nucleic Acids

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

Give the IUPAC name for CH₃CH=CHCH=CHC≡CCH₃

Explain why the synthetic route shown below would be unsuccessful. H≡C≡C:^-Na⁺ C-C≡C-CH₂CH₃ 3. (CH₃)₃CBr

Give the IUPAC name for Cl₃CCH₂CH₂CH₂C≡CH.

Provide the structure of the major organic product(s) in the reaction sequence below. CH₃CH₂C≡CH →

How many distinct terminal alkynes exist with a molecular formula of C₅H₈?