a) Bromobenzene, 2-bromopropane, bromoethane Interpretation: The compounds bromoethane, 2-bromopropane and bromobenzene are to be ranked in the order of their reactivity in Williamson synthesis. Concept introduction: In Williamson synthesis, the primary alkyl halides are preferred as the reaction occurs through a S N 2 mechanism. With secondary and tertiary alkyl halides elimination occurs through E 2 mechanism to yield alkenes. Aromatic halides are less reactive than aliphatic halides. To rank: The compounds bromoethane, 2-bromopropane and bromobenzene in the order of their reactivity in Williamson synthesis.

Question

How will you prepare the following buffers? 2.5 L of 1.5M buffer, pH = 10.5 from NH4Cl and NH3

Answer 1

Question

Chapter 18.2, Problem 6P

Interpretation Introduction

a) Bromobenzene, 2-bromopropane, bromoethane

Interpretation:

The compounds bromoethane, 2-bromopropane and bromobenzene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, the primary alkyl halides are preferred as the reaction occurs through a S_N² mechanism. With secondary and tertiary alkyl halides elimination occurs through E² mechanism to yield alkenes. Aromatic halides are less reactive than aliphatic halides.

To rank:

The compounds bromoethane, 2-bromopropane and bromobenzene in the order of their reactivity in Williamson synthesis.

Interpretation Introduction

b) Chloroethane, bromoethane, 1-Iodopropene

Interpretation:

The compounds chloroethane, bromoethane and 1-iodopropene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, te alkoxuide reacts with primary alkyl halides through a S_N² mechanism. The requirements are thus a backside attack, a stronger nucleophile and a better leaving group. Among the halides, iodine is better leaving than bromine which in turn is a better leaving than chlorine. Vinyl halides are less reactive than alkyl halides.

To rank:

The compounds chloroethane, bromoethane and 1-iodopropene in the order of their reactivity in Williamson synthesis.

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How will you prepare the following buffers? 2.5 L of 1.5M buffer, pH = 10.5 from NH4Cl and NH3

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Answer 2

Question

Chapter 18.2, Problem 6P

Interpretation Introduction

a) Bromobenzene, 2-bromopropane, bromoethane

Interpretation:

The compounds bromoethane, 2-bromopropane and bromobenzene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, the primary alkyl halides are preferred as the reaction occurs through a S_N² mechanism. With secondary and tertiary alkyl halides elimination occurs through E² mechanism to yield alkenes. Aromatic halides are less reactive than aliphatic halides.

To rank:

The compounds bromoethane, 2-bromopropane and bromobenzene in the order of their reactivity in Williamson synthesis.

Interpretation Introduction

b) Chloroethane, bromoethane, 1-Iodopropene

Interpretation:

The compounds chloroethane, bromoethane and 1-iodopropene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, te alkoxuide reacts with primary alkyl halides through a S_N² mechanism. The requirements are thus a backside attack, a stronger nucleophile and a better leaving group. Among the halides, iodine is better leaving than bromine which in turn is a better leaving than chlorine. Vinyl halides are less reactive than alkyl halides.

To rank:

The compounds chloroethane, bromoethane and 1-iodopropene in the order of their reactivity in Williamson synthesis.

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Answer 3

Question

Chapter 18.2, Problem 6P

Interpretation Introduction

a) Bromobenzene, 2-bromopropane, bromoethane

Interpretation:

The compounds bromoethane, 2-bromopropane and bromobenzene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, the primary alkyl halides are preferred as the reaction occurs through a S_N² mechanism. With secondary and tertiary alkyl halides elimination occurs through E² mechanism to yield alkenes. Aromatic halides are less reactive than aliphatic halides.

To rank:

The compounds bromoethane, 2-bromopropane and bromobenzene in the order of their reactivity in Williamson synthesis.

Interpretation Introduction

b) Chloroethane, bromoethane, 1-Iodopropene

Interpretation:

The compounds chloroethane, bromoethane and 1-iodopropene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, te alkoxuide reacts with primary alkyl halides through a S_N² mechanism. The requirements are thus a backside attack, a stronger nucleophile and a better leaving group. Among the halides, iodine is better leaving than bromine which in turn is a better leaving than chlorine. Vinyl halides are less reactive than alkyl halides.

To rank:

The compounds chloroethane, bromoethane and 1-iodopropene in the order of their reactivity in Williamson synthesis.

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Answer 4

Question

Chapter 18.2, Problem 6P

Interpretation Introduction

a) Bromobenzene, 2-bromopropane, bromoethane

Interpretation:

The compounds bromoethane, 2-bromopropane and bromobenzene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, the primary alkyl halides are preferred as the reaction occurs through a S_N² mechanism. With secondary and tertiary alkyl halides elimination occurs through E² mechanism to yield alkenes. Aromatic halides are less reactive than aliphatic halides.

To rank:

The compounds bromoethane, 2-bromopropane and bromobenzene in the order of their reactivity in Williamson synthesis.

Interpretation Introduction

b) Chloroethane, bromoethane, 1-Iodopropene

Interpretation:

The compounds chloroethane, bromoethane and 1-iodopropene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, te alkoxuide reacts with primary alkyl halides through a S_N² mechanism. The requirements are thus a backside attack, a stronger nucleophile and a better leaving group. Among the halides, iodine is better leaving than bromine which in turn is a better leaving than chlorine. Vinyl halides are less reactive than alkyl halides.

To rank:

The compounds chloroethane, bromoethane and 1-iodopropene in the order of their reactivity in Williamson synthesis.

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Answer 5

Chapter 18.2, Problem 6P

Interpretation Introduction

a) Bromobenzene, 2-bromopropane, bromoethane

Interpretation:

The compounds bromoethane, 2-bromopropane and bromobenzene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, the primary alkyl halides are preferred as the reaction occurs through a S_N² mechanism. With secondary and tertiary alkyl halides elimination occurs through E² mechanism to yield alkenes. Aromatic halides are less reactive than aliphatic halides.

To rank:

The compounds bromoethane, 2-bromopropane and bromobenzene in the order of their reactivity in Williamson synthesis.

Interpretation Introduction

b) Chloroethane, bromoethane, 1-Iodopropene

Interpretation:

The compounds chloroethane, bromoethane and 1-iodopropene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, te alkoxuide reacts with primary alkyl halides through a S_N² mechanism. The requirements are thus a backside attack, a stronger nucleophile and a better leaving group. Among the halides, iodine is better leaving than bromine which in turn is a better leaving than chlorine. Vinyl halides are less reactive than alkyl halides.

To rank:

The compounds chloroethane, bromoethane and 1-iodopropene in the order of their reactivity in Williamson synthesis.

Answer 6

Chapter 18.2, Problem 6P

Interpretation Introduction

a) Bromobenzene, 2-bromopropane, bromoethane

Interpretation:

The compounds bromoethane, 2-bromopropane and bromobenzene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, the primary alkyl halides are preferred as the reaction occurs through a S_N² mechanism. With secondary and tertiary alkyl halides elimination occurs through E² mechanism to yield alkenes. Aromatic halides are less reactive than aliphatic halides.

To rank:

The compounds bromoethane, 2-bromopropane and bromobenzene in the order of their reactivity in Williamson synthesis.

Answer 7

Chapter 18.2, Problem 6P

Interpretation Introduction

a) Bromobenzene, 2-bromopropane, bromoethane

Interpretation:

The compounds bromoethane, 2-bromopropane and bromobenzene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, the primary alkyl halides are preferred as the reaction occurs through a S_N² mechanism. With secondary and tertiary alkyl halides elimination occurs through E² mechanism to yield alkenes. Aromatic halides are less reactive than aliphatic halides.

To rank:

The compounds bromoethane, 2-bromopropane and bromobenzene in the order of their reactivity in Williamson synthesis.

Answer 8

Interpretation Introduction

b) Chloroethane, bromoethane, 1-Iodopropene

Interpretation:

The compounds chloroethane, bromoethane and 1-iodopropene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, te alkoxuide reacts with primary alkyl halides through a S_N² mechanism. The requirements are thus a backside attack, a stronger nucleophile and a better leaving group. Among the halides, iodine is better leaving than bromine which in turn is a better leaving than chlorine. Vinyl halides are less reactive than alkyl halides.

To rank:

The compounds chloroethane, bromoethane and 1-iodopropene in the order of their reactivity in Williamson synthesis.

Answer 9

Interpretation Introduction

b) Chloroethane, bromoethane, 1-Iodopropene

Interpretation:

The compounds chloroethane, bromoethane and 1-iodopropene are to be ranked in the order of their reactivity in Williamson synthesis.

Concept introduction:

In Williamson synthesis, te alkoxuide reacts with primary alkyl halides through a S_N² mechanism. The requirements are thus a backside attack, a stronger nucleophile and a better leaving group. Among the halides, iodine is better leaving than bromine which in turn is a better leaving than chlorine. Vinyl halides are less reactive than alkyl halides.

To rank:

The compounds chloroethane, bromoethane and 1-iodopropene in the order of their reactivity in Williamson synthesis.

Answer 10

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Ch. 18.1 - Name the following ethers:Ch. 18.2 - Why do you suppose only symmetrical ethers are...Ch. 18.2 - How would you prepare the following ethers using a...Ch. 18.2 - Review the mechanism of oxymercuration shown in...Ch. 18.2 - How would you prepare the following ethers? Use...Ch. 18.2 - Prob. 6P Ch. 18.3 - Prob. 7P Ch. 18.3 - Write the mechanism of the acid-induced cleavage...Ch. 18.3 - Why are HI and HBr more effective than HCl in...Ch. 18.4 - What product would you expect from Claisen...

Chapter 18 Solutions