Question 1

Fill in the missing reagents A and B on both sides of the substrate.

Accepted Answer

Reaction conditions:

Question 2

Provide the structure of all distinct terminal alkynes with a molecular formula of C6H10.

Accepted Answer

Question 3

In the reduction of alkynes using sodium in liquid ammonia,which of the species below is not an intermediate in the commonly accepted mechanism?

Accepted Answer

A) vinyl anion 
B) vinyl radical 
C) radical anion 
D) vinyl cation 
A) vinyl anion 
B) vinyl radical 
C) radical anion 
D) vinyl cation

Question 4

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 5

Name the following compound.

Accepted Answer

A) 3-heptyn-6-ol 
B) 3-hepten-6-ol 
C) 4-hepten-2-ol 
D) 4-heptyn-2-ol 
E) 4-heptan-2-ol 
A) 3-heptyn-6-ol 
B) 3-hepten-6-ol 
C) 4-hepten-2-ol 
D) 4-heptyn-2-ol 
E) 4-heptan-2-ol

Question 6

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

Accepted Answer

1.NaNH₂ 2.C

Question 7

Which of the following statements correctly describes the general reactivity of alkynes?

Accepted Answer

A) An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. 
B) The σ bonds of alkynes are higher in energy than the π bonds and are thus more reactive. 
C) Unlike alkenes,alkynes fail to undergo electrophilic addition reactions. 
D) Alkynes are generally more reactive than alkenes. 
E) Alkynes react as electrophiles,whereas alkenes reacts as nucleophiles. 
A) An alkyne is an electron-rich molecule and therefore reacts as a nucleophile. 
B) The σ bonds of alkynes are higher in energy than the π bonds and are thus more reactive. 
C) Unlike alkenes,alkynes fail to undergo electrophilic addition reactions. 
D) Alkynes are generally more reactive than alkenes. 
E) Alkynes react as electrophiles,whereas alkenes reacts as nucleophiles.

Question 8

Complete the following tree of reactions by giving the major products.

Accepted Answer

The answer of Complete the following tree of reactions by...

Question 9

Name the following compound.

Accepted Answer

cis-4,5-dimethyl-4-h

Question 10

Which of the following is the best synthesis of 2,2-dibromopropane?

Accepted Answer

A) CH3CH   CH2   
B) CH3CH   CH2   
C) CH3C   CH   
D) CH3C   CH   
E) CH3CH   CH2   
A) CH3CH   CH2   
B) CH3CH   CH2   
C) CH3C   CH   
D) CH3C   CH   
E) CH3CH   CH2

Question 11

Provide the structure of the major organic product(s)in the reaction below.
CH3CH2-C   C-CH3

Accepted Answer

Question 12

For the reaction below indicate whether the equilibrium constant will be greater than 1 or less than 1.
CH3Li + CH3C   CH ⇌ CH4 + CH3C   CLi

Accepted Answer

Question 13

For the reaction below indicate whether the equilibrium constant will be greater than 1 or less than 1.
KOH + CH3C   CH ⇌ H2O + CH3C   CK

Accepted Answer

Question 14

Give the reagents for the following reaction.

Accepted Answer

1.NaNH₂,2.C

Question 15

Give the reagents for the following reaction.

Accepted Answer

1.NaNH₂,2.C

Question 16

Give the reagents for the following reaction.

Accepted Answer

1.H₂,Lindla

Question 17

Which hydrogens are more acidic,those of benzene or those of cyclohexane? Why?

Accepted Answer

Benzene.The carbon hybridizati

Question 18

Give the major organic product for the reaction.

Accepted Answer

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

Question 19

Complete the following reaction.

Accepted Answer

The answer of Complete the following reaction.  ...

Question 20

Give the major organic product for the reaction.

Accepted Answer

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

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

Fill in the missing reagents A and B on both sides of the substrate.

Provide the structure of all distinct terminal alkynes with a molecular formula of C6H10.

In the reduction of alkynes using sodium in liquid ammonia,which of the species below is not an intermediate in the commonly accepted mechanism?

Give the best reagents for the reaction.

Name the following compound.

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

Which of the following statements correctly describes the general reactivity of alkynes?

Complete the following tree of reactions by giving the major products.

Name the following compound.

Which of the following is the best synthesis of 2,2-dibromopropane?

Provide the structure of the major organic product(s)in the reaction below. CH3CH2-C C-CH3

For the reaction below indicate whether the equilibrium constant will be greater than 1 or less than 1. CH3Li + CH3C CH ⇌ CH4 + CH3C CLi

For the reaction below indicate whether the equilibrium constant will be greater than 1 or less than 1. KOH + CH3C CH ⇌ H2O + CH3C CK

Give the reagents for the following reaction.

Give the reagents for the following reaction.

Give the reagents for the following reaction.

Which hydrogens are more acidic,those of benzene or those of cyclohexane? Why?

Give the major organic product for the reaction.

Complete the following reaction.

Give the major organic product for the reaction.

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 all distinct terminal alkynes with a molecular formula of C₆H₁₀.

Provide the structure of the major organic product(s)in the reaction below. CH₃CH₂-C C-CH₃

For the reaction below indicate whether the equilibrium constant will be greater than 1 or less than 1. CH₃Li + CH₃C CH ⇌ CH₄ + CH₃C CLi

For the reaction below indicate whether the equilibrium constant will be greater than 1 or less than 1. KOH + CH₃C CH ⇌ H₂O + CH₃C CK