Question 1

Give the major organic product for the reaction.

Accepted Answer

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

Question 2

Provide the major organic product in the reaction below.

Accepted Answer

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

Question 3

Give the IUPAC name for the following compound.

Accepted Answer

A) isoprene 
B) 3-methyl-1,3-butadiene 
C) 2-methyl-1,3-butadiene 
D) 2-methyl-2,3-butadiene 
E) isobutadiene 
A) isoprene 
B) 3-methyl-1,3-butadiene 
C) 2-methyl-1,3-butadiene 
D) 2-methyl-2,3-butadiene 
E) isobutadiene

Question 4

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 5

An optically active compound (A), C6H10, reacts with H2/Ni to produce compound (B), C6H14. (B)is optically inactive. Deduce the structures of (A)and (B).

Accepted Answer

Question 6

Name the following compound:

Accepted Answer

(2E,4Z)-2,4-hexadiene or trans

Question 7

Provide the structure of the intermediate which forms in the first step of the reaction of 1-butyne with water in the presence of H2SO4/HgSO4.

Accepted Answer

Question 8

Write structures and give IUPAC names for all alkynes with molecular formula C5H8.

Accepted Answer

Question 9

Describe a sequence of reactions by which CH3CH2CH2COCH2CH3 can be prepared from 1-butyne.

Accepted Answer

1) NaNH₂ 2)

Question 10

Give the IUPAC name for BrCH2CH2CCCH2CH3.

Accepted Answer

Question 11

Give the best reagents for the reaction.

Accepted Answer

A) H2, Pd 
B) 1) LiAlH4, 2. H3O+ 
C) 1) NaBH4, 2. H3O+ 
D) H2, Lindlar catalyst 
E) Na, NH3 
A) H2, Pd 
B) 1) LiAlH4, 2. H3O+ 
C) 1) NaBH4, 2. H3O+ 
D) H2, Lindlar catalyst 
E) Na, NH3

Question 12

Give the systematic name for the alkyne Cl3CCH2CH2CCCH3.

Accepted Answer

6,6,6-tric

Question 13

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 14

Give the reagents for the following reaction.

Accepted Answer

1. NaNH₂, 2

Question 15

Describe a sequence of reactions by which 3-heptyne can be straightforwardly prepared from acetylene.

Accepted Answer

1) NaNH₂ 2)

Question 16

Give the best reagents for the reaction.

Accepted Answer

A) H2SO4, HgSO4, HgSO4 
B) 1) disiamylborane, 2. HO-, H2O, H2O2 
C) K2Cr2O7, H+ 
D) NaOCl 
E) H2, Pd 
A) H2SO4, HgSO4, HgSO4 
B) 1) disiamylborane, 2. HO-, H2O, H2O2 
C) K2Cr2O7, H+ 
D) NaOCl 
E) H2, Pd

Question 17

Provide the sequence of reagents that are needed to accomplish the multistep synthesis below.

Accepted Answer

1. NaNH₂ 2.

Question 18

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 19

Although you might expect 1-propyne to be more reactive than 1-propene in electrophilic addition reactions, the reverse is true. Explain this using your knowledge of the mechanism of electrophilic additions to both alkynes and alkenes.

Accepted Answer

When HCl is added to an alkene, a second

Question 20

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.

Exam 7: Reactions of Alkynes Introduction to Multistep Synthesis

Give the major organic product for the reaction.

Provide the major organic product in the reaction below.

Give the IUPAC name for the following compound.

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

An optically active compound (A), C6H10, reacts with H2/Ni to produce compound (B), C6H14. (B)is optically inactive. Deduce the structures of (A)and (B).

Name the following compound:

Provide the structure of the intermediate which forms in the first step of the reaction of 1-butyne with water in the presence of H2SO4/HgSO4.

Write structures and give IUPAC names for all alkynes with molecular formula C5H8.

Describe a sequence of reactions by which CH3CH2CH2COCH2CH3 can be prepared from 1-butyne.

Give the IUPAC name for BrCH2CH2CCCH2CH3.

Give the best reagents for the reaction.

Give the systematic name for the alkyne Cl3CCH2CH2CCCH3.

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

Give the reagents for the following reaction.

Describe a sequence of reactions by which 3-heptyne can be straightforwardly prepared from acetylene.

Give the best reagents for the reaction.

Provide the sequence of reagents that are needed to accomplish the multistep synthesis below.

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

Although you might expect 1-propyne to be more reactive than 1-propene in electrophilic addition reactions, the reverse is true. Explain this using your knowledge of the mechanism of electrophilic additions to both alkynes and alkenes.

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

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds

Isomers: the Arrangement of Atoms in Space

Alkenes Thermodynamics and Kinetics

Reactions of Alkenes

Electron Delocalization, Resonance, and Aromaticity More About Molecular Orbital Theory

Substitution Reactions of Alkyl Halides

Elimination Reactions of Alkyl Halides Competition Between Substitution and Elimination

Reactions of Alcohols, Ethers, Epoxides, and Sulfur-Containing Compounds

Organometallic Compounds

Reactions of Alkanes, 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 Alpha Carbon of Carbonyl Compounds

Reactions of Benzene and Substituted Benzenes

More About Amines Heterocylic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Catalysis

The Organic Mechanisms of the Coenzymes

The Chemistry of Metabolism

Nucleosides, Nucleotides, and Nucleic Acids

Synthetic Polymers

Pericyclic Reactions

Filters

An optically active compound (A), C₆H₁₀, reacts with H₂/Ni to produce compound (B), C₆H₁₄. (B)is optically inactive. Deduce the structures of (A)and (B).

Provide the structure of the intermediate which forms in the first step of the reaction of 1-butyne with water in the presence of H₂SO₄/HgSO₄.

Write structures and give IUPAC names for all alkynes with molecular formula C₅H₈.

Describe a sequence of reactions by which CH₃CH₂CH₂COCH₂CH₃ can be prepared from 1-butyne.

Give the IUPAC name for BrCH₂CH₂CCCH₂CH₃.

Give the systematic name for the alkyne Cl₃CCH₂CH₂CCCH₃.