Question 1

Explain what is wrong with the following mechanism step,and provide an alternative way in which the two species could react.

Accepted Answer

Mechanisms must have arrows th

Question 2

Which of the following is an E2 step?

Accepted Answer

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

Question 3

Which of the following is an acceptable mechanism step?

Accepted Answer

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

Question 4

Suppose that the two following molecules undergo an electrophilic addition step.Draw the mechanism and the product,and label the nucleophile and the electrophile.

Accepted Answer

The answer of Suppose that the two following molecules undergo...

Question 5

Explain why the products are favored in the following reaction.

Accepted Answer

Two single bonds are lost,and a new sing

Question 6

In the following reaction,identify all electron-rich and electron-poor sites in the starting materials,and supply the missing mechanism arrows required to form the given product.

Accepted Answer

The answer of In the following reaction,identify all electron-rich and...

Question 7

Which of the following is an acceptable mechanism step?

Accepted Answer

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

Question 8

Draw the keto tautomer for the following compound.

Accepted Answer

The answer of Draw the keto tautomer for the following...

Question 9

The following compounds can react via an E2 step.Draw this mechanism,give the expected products,and label which of the starting materials is the nucleophile and which is the electrophile.

Accepted Answer

The answer of The following compounds can react via an...

Question 10

Which of the following is an example of electrophile elimination?

Accepted Answer

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

Question 11

Which of the following 1,2-hydride shift rearrangements is most likely?

Accepted Answer

A) I 
B) II 
C) III 
D) IV 
E) None of these 
A) I 
B) II 
C) III 
D) IV 
E) None of these

Question 12

The following mechanism proceeds through nucleophile elimination.Fill in the omitted mechanism arrows,and draw the missing product in the box.

Accepted Answer

The answer of The following mechanism proceeds through nucleophile elimination.Fill...

Question 13

Which of the following is true about Lewis acids?

Accepted Answer

A) They accept electrons. 
B) They often have a negative charge. 
C) They tend to be electron rich. 
D) They attract electron-poor sites. 
E) They only attract protons. 
A) They accept electrons. 
B) They often have a negative charge. 
C) They tend to be electron rich. 
D) They attract electron-poor sites. 
E) They only attract protons.

Question 14

For the following reaction scheme,name what type of elementary mechanism step is occurring in Step 1 and Step 2.Choose from the following: SN2,coordination,heterolysis,E2,nucleophilic addition,nucleophile elimination,electrophilic addition,electrophile elimination,carbocation rearrangement,or none of the above.

Accepted Answer

Step 1 is electrophi

Question 15

The two following species can react via an electrophile elimination step.Draw the mechanism arrows for this step,give the expected product,and label the nucleophile and the electrophile.

Accepted Answer

The answer of The two following species can react via...

Question 16

The two following species can react via an electrophile elimination step.Draw the mechanism arrows for this step,give the expected product,and label the nucleophile and the electrophile.

Accepted Answer

The answer of The two following species can react via...

Question 17

The following carbocation undergoes a 1,2-hydride shift.Draw the mechanism,and give the products of this shift.

Accepted Answer

The answer of The following carbocation undergoes a 1,2-hydride shift.Draw...

Question 18

Which of the following is a nucleophilic addition step?

Accepted Answer

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

Exam 9: An Overview of the Most Common Elementary Steps

Explain what is wrong with the following mechanism step,and provide an alternative way in which the two species could react.

Which of the following is an E2 step?

Which of the following is an acceptable mechanism step?

Suppose that the two following molecules undergo an electrophilic addition step.Draw the mechanism and the product,and label the nucleophile and the electrophile.

Explain why the products are favored in the following reaction.

In the following reaction,identify all electron-rich and electron-poor sites in the starting materials,and supply the missing mechanism arrows required to form the given product.

Which of the following is an acceptable mechanism step?

Draw the keto tautomer for the following compound.

The following compounds can react via an E2 step.Draw this mechanism,give the expected products,and label which of the starting materials is the nucleophile and which is the electrophile.

Which of the following is an example of electrophile elimination?

Which of the following 1,2-hydride shift rearrangements is most likely?

The following mechanism proceeds through nucleophile elimination.Fill in the omitted mechanism arrows,and draw the missing product in the box.

Which of the following is true about Lewis acids?

The two following species can react via an electrophile elimination step.Draw the mechanism arrows for this step,give the expected product,and label the nucleophile and the electrophile.

The two following species can react via an electrophile elimination step.Draw the mechanism arrows for this step,give the expected product,and label the nucleophile and the electrophile.

The following carbocation undergoes a 1,2-hydride shift.Draw the mechanism,and give the products of this shift.

Which of the following is a nucleophilic addition step?

Atomic and Molecular Structure

Interchapter: Nomenclature 1-4

Interchapter 1molecular Orbital Theory and Chemical Reactions

Three-Dimensional Geometry,intermolecular Interactions,and Physical Properties

Orbital Interactions 1: Hybridization and Two-Center Molecular Orbitals

Isomerism 1: Conformational and Constitutional Isomers

Isomerism 2: Chirality,enantiomers,and Diastereomers

The Proton Transfer Reaction: an Introduction to Mechanisms,thermodynamics,and Charge Stability

An Introduction to Multistep Mechanisms: Sn1 and E1 Reactions

Nucleophilic Substitution and Elimination Reactions 1: Competition Among Sn2,sn1,e2,and E1 Reactions

Nucleophilic Substitution and Elimination Reactions 2: Reactions That Are Useful for Synthesis

Electrophilic Addition to Nonpolar Π Bonds 1: Addition of a Brønsted Acid

Electrophilic Addition to Nonpolar Π Bonds 2: Reactions Involving Cyclic Transition States

Organic Synthesis 1: Beginning Concepts

Orbital Interactions 2: Extended Π Systems,conjugation,and Aromaticity

Structure Determination 1: Ultravioletvisible and Infrared Spectroscopies

Structure Determination 2: Nuclear Magnetic Resonance Spectroscopy and Mass Spectrometry

Nucleophilic Addition to Polar Π Bonds 1: Addition of Strong Nucleophiles

Nucleophilic Addition to Polar Π Bonds 2: Addition of Weak Nucleophiles and Acid and Base Catalysis

Organic Synthesis 2: Intermediate Topics in Synthesis Design,and Useful Reduction and Oxidation Reactions

Nucleophilic Additionelimination Reactions 1: the General Mechanism Involving Strong Nucleophiles

Nucleophilic Additionelimination Reactions 2: Weak Nucleophiles

Electrophilic Aromatic Substitution 1: Substitution on Benzene; Useful Accompanying Reactions

Electrophilic Aromatic Substitution 2: Substitution on Mono- and Disubstituted Benzene and Other Aromatic Rings

The Dielsalder Reaction and Other Pericyclic Reactions

Reactions Involving Free Radicals

Polymers

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