The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions. Concept Introduction: Allylic systems: The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here: Stability of the allylic carbocations: Primary < Secondary < tertiary Example for Primary allylic carbocation is: Example for Secondary allylic carbocation is: Example for tertiary allylic carbocation is:

Question

Using the graphs could you help me explain the answers. I assumed that both graphs are proportional to the inverse of time, I think. Could you please help me.

Answer 1

Question

Chapter 20, Problem 20.15P

(a)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(b)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(c)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

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Using the graphs could you help me explain the answers. I assumed that both graphs are proportional to the inverse of time, I think. Could you please help me.

Synthesis of Dibenzalacetone [References] Draw structures for the carbonyl electrophile and enolate nucleophile that react to give the enone below. Question 1 1 pt Question 2 1 pt Question 3 1 pt H Question 4 1 pt Question 5 1 pt Question 6 1 pt Question 7 1pt Question 8 1 pt Progress: 7/8 items Que Feb 24 at You do not have to consider stereochemistry. . Draw the enolate ion in its carbanion form. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. ⚫ Separate multiple reactants using the + sign from the drop-down menu. ? 4

Shown below is the mechanism presented for the formation of biasplatin in reference 1 from the Background and Experiment document. The amounts used of each reactant are shown. Either draw or describe a better alternative to this mechanism. (Note that the first step represents two steps combined and the proton loss is not even shown; fixing these is not the desired improvement.) (Hints: The first step is correct, the second step is not; and the amount of the anhydride is in large excess to serve a purpose.)

Answer 2

Question

Chapter 20, Problem 20.15P

(a)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(b)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(c)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

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Answer 3

Question

Chapter 20, Problem 20.15P

(a)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(b)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(c)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

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Answer 4

Question

Chapter 20, Problem 20.15P

(a)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(b)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(c)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

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Answer 5

Chapter 20, Problem 20.15P

(a)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(b)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

(c)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

Answer 6

Chapter 20, Problem 20.15P

(a)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

Answer 7

Chapter 20, Problem 20.15P

(a)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

Answer 8

(b)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

Answer 9

(b)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

Answer 10

(c)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

Answer 11

(c)

Interpretation Introduction

Interpretation: The important resonance hybrids for the given allylic carbocations have to be drawn and ranked based on their contributions.

Concept Introduction:

Allylic systems:

The allylic system is characterized by the connectivity of a single bonded carbon atom connected to double bond alkene functional group as shown here:

Stability of the allylic carbocations:

Primary < Secondary < tertiary

Example for Primary allylic carbocation is:

Example for Secondary allylic carbocation is:

Example for tertiary allylic carbocation is:

Answer 12

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Answer 23

Ch. 20.1 - Prob. 20.1P Ch. 20.1 - Estimate the stabilization gained as a result of...Ch. 20.2 - Predict the product(s) formed by addition of one...Ch. 20.3 - Prob. 20.4P Ch. 20.3 - Prob. 20.5P Ch. 20.4 - Prob. 20.6P Ch. 20.5 - Prob. 20.7P Ch. 20.5 - Prob. 20.8P Ch. 20.5 - Prob. 20.9P Ch. 20.6 - Prob. 20.10P

Solution Summary: The author explains that the resonance hybrids for the given allylic carbocation have to be drawn based on their contributions.

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Chapter 20 Solutions