The mechanism of the given reaction has to be proposed. Concept Introduction: Nucleophilic substitution reaction is a type of reaction in which a particular group or atom in a compound is replaced by nucleophile. A nucleophile is a species that is rich of electrons Substitution reaction is a type of organic reaction where one group that is present in the substrate is replaced by another group. Nucleophile: donates pair of electrons to positively charged substrate resulting in the formation of chemical bond . Ipso substitution reaction: It is the one of the aromatic substitution reaction in which both the substituent (nucleophile and the parent substituent) present in the same ring position in an intermediate compound. Finally the parent substituent leave from the intermediate leads to the formation of product. The mechanism of desulfonation curved arrow pattern is given below.

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Chapter 18, Problem 87IP

(a)

Interpretation Introduction

Interpretation: The mechanism of the given reaction has to be proposed.

Concept Introduction:

Nucleophilic substitution reaction is a type of reaction in which a particular group or atom in a compound is replaced by nucleophile. A nucleophile is a species that is rich of electrons

Substitution reaction is a type of organic reaction where one group that is present in the substrate is replaced by another group.

Nucleophile: donates pair of electrons to positively charged substrate resulting in the formation of chemical bond.

Ipso substitution reaction: It is the one of the aromatic substitution reaction in which both the substituent (nucleophile and the parent substituent) present in the same ring position in an intermediate compound. Finally the parent substituent leave from the intermediate leads to the formation of product.

The mechanism of desulfonation curved arrow pattern is given below.

(b)

Interpretation Introduction

Interpretation: The rate determining step of the given reaction has to be given based on the observed regiochemical outcome.

Concept Introduction:

Nucleophilic substitution reaction is a type of reaction in which a particular group or atom in a compound is replaced by nucleophile. A nucleophile is a species that is rich of electrons

Substitution reaction is a type of organic reaction where one group that is present in the substrate is replaced by another group.

Leaving group: it is a fragment that leaves substrate with a pair of electrons via heterolytic bond cleavage.

Nucleophile: donates pair of electrons to positively charged substrate resulting in the formation of chemical bond.

Ipso substitution reaction: It is the one of the aromatic substitution reaction in which both the substituent (nucleophile and the parent substituent) present in the same ring position in an intermediate compound. Finally the parent substituent leave from the intermediate leads to the formation of product.

The mechanism of desulfonation curved arrow pattern is given below.

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