Question 1

Provide the structure of the major organic product of the following reaction.

Accepted Answer

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

Question 2

Which of the following is the final and major product of this reaction?

Accepted Answer

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

Question 3

Provide the major organic product in the reaction below.

Accepted Answer

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

Question 4

The carbon-carbon triple bond of an alkyne is composed of

Accepted Answer

A) three σ bonds. 
B) two σ bonds and one π bond. 
C) one σ bond and two π bonds. 
D) three π bonds. 
A) three σ bonds. 
B) two σ bonds and one π bond. 
C) one σ bond and two π bonds. 
D) three π bonds.

Question 5

Provide the structure of the major organic product that results when 2-butyne is treated with H2 in the presence of Lindlar's catalyst.

Accepted Answer

Question 6

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 7

Why are terminal alkynes more acidic than other hydrocarbons?

Accepted Answer

The carbanion which results upon deproto

Question 8

Which of the alkyne addition reactions below involves an enol intermediate?

Accepted Answer

A) hydroboration/oxidation 
B) treatment with HgSO4 in dilute H2SO4 
C) hydrogenation 
D) both A and B 
E) both A and C 
A) hydroboration/oxidation 
B) treatment with HgSO4 in dilute H2SO4 
C) hydrogenation 
D) both A and B 
E) both A and C

Question 9

Complete the following reaction.
3-hexyne

Accepted Answer

The answer of Complete the following reaction.
3-hexyne  ...

Question 10

Give the major organic product for the reaction.

Accepted Answer

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

Question 11

Provide the structure of the major organic product that results when 2-butyne is treated with 1 equivalent of Br2.

Accepted Answer

Question 12

Provide the structure of the major organic product(s)in the reaction below.
CH3CH2   CH

Accepted Answer

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

Question 13

Provide the structure of the major organic product that results when 2-butyne is treated with 1 equivalent of HCl.

Accepted Answer

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

Question 14

Give the IUPAC name for BrCH2CH2CCCH2CH3.

Accepted Answer

Question 15

Why are mercuric ions needed during the hydration of alkynes?

Accepted Answer

A) They catalyze the reaction by reacting with the alkyne and making it more nucleophilic. 
B) They catalyze the reaction by reacting with the alkyne and making it more electrophilic. 
C) They make alkynes more soluble in water. 
D) They increase the rate of addition reaction. 
E) B and D 
A) They catalyze the reaction by reacting with the alkyne and making it more nucleophilic. 
B) They catalyze the reaction by reacting with the alkyne and making it more electrophilic. 
C) They make alkynes more soluble in water. 
D) They increase the rate of addition reaction. 
E) B and D

Question 16

What type of organic product results when 1-butyne is treated with 6M aqueous NaOH?

Accepted Answer

A) a sodium acetylide 
B) an enol 
C) an alcohol 
D) an aldehyde 
E) Not much reaction; most of the alkyne remains unchanged. 
A) a sodium acetylide 
B) an enol 
C) an alcohol 
D) an aldehyde 
E) Not much reaction; most of the alkyne remains unchanged.

Question 17

Give the major organic product for the reaction.

Accepted Answer

A) CH3CH2CH2CH2CH3 
B)    
C)    
D)    
E)    
A) CH3CH2CH2CH2CH3 
B)    
C)    
D)    
E)

Question 18

The reagent needed to convert 2-butyne to trans-2-butene is

Accepted Answer

A) H2/Pt. 
B) H2/Lindlar's catalyst. 
C) Li/NH3. 
D) Na/NH3. 
E) C or D. 
A) H2/Pt. 
B) H2/Lindlar's catalyst. 
C) Li/NH3. 
D) Na/NH3. 
E) C or D.

Question 19

Give the reagents for the following reaction.

Accepted Answer

1.NaNH₂,2.C

Question 20

Provide an acceptable name for the compound shown.

Accepted Answer

7,7-dichloro-5,5-dim

Exam 7: The Reactions of Alkynes - Introduction to Multistep Synthesis

Provide the structure of the major organic product of the following reaction.

Which of the following is the final and major product of this reaction?

Provide the major organic product in the reaction below.

The carbon-carbon triple bond of an alkyne is composed of

Provide the structure of the major organic product that results when 2-butyne is treated with H2 in the presence of Lindlar's catalyst.

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

Why are terminal alkynes more acidic than other hydrocarbons?

Which of the alkyne addition reactions below involves an enol intermediate?

Complete the following reaction. 3-hexyne

Give the major organic product for the reaction.

Provide the structure of the major organic product that results when 2-butyne is treated with 1 equivalent of Br2.

Provide the structure of the major organic product(s)in the reaction below. CH3CH2 CH

Provide the structure of the major organic product that results when 2-butyne is treated with 1 equivalent of HCl.

Give the IUPAC name for BrCH2CH2CCCH2CH3.

Why are mercuric ions needed during the hydration of alkynes?

What type of organic product results when 1-butyne is treated with 6M aqueous NaOH?

Give the major organic product for the reaction.

The reagent needed to convert 2-butyne to trans-2-butene is

Give the reagents for the following reaction.

Provide an acceptable name for the compound shown.

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Α-Carbon

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Amino Acids,peptides,and Proteins

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of the Metabolic Pathways

The Organic Chemistry of Lipids

The Chemistry of the Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

Provide the structure of the major organic product that results when 2-butyne is treated with H₂ in the presence of Lindlar's catalyst.

Provide the structure of the major organic product that results when 2-butyne is treated with 1 equivalent of Br₂.

Give the IUPAC name for BrCH₂CH₂CCCH₂CH₃.