Major products should be drawn for the given reactions. Concept Introduction: Elimination reaction: In elimination reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination reactions are two types, E1 and E2. E1 reaction: elimination follows stepwise mechanism. In this process, intermediate is carbocation. E2 reaction: elimination follows concerted pathway of mechanism. In this process, there is intermediate only transition state. Dehydratio n: elimination of water molecule from the substrate is known as dehydration process. This reaction leads in presence of concentrated sulfuric acid followed by heat. Dehydro halogenation: elimination of hydrogen halide from the substrate is known as dehydro halogenation process. This reaction leads in acidic media.

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Chapter 7.12, Problem 42CC

(a)

Interpretation Introduction

Interpretation:

Major products should be drawn for the given reactions.

Concept Introduction:

Elimination reaction: In elimination reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination reactions are two types, E1 and E2.

E1 reaction: elimination follows stepwise mechanism. In this process, intermediate is carbocation.

E2 reaction: elimination follows concerted pathway of mechanism. In this process, there is intermediate only transition state.

Dehydration: elimination of water molecule from the substrate is known as dehydration process. This reaction leads in presence of concentrated sulfuric acid followed by heat.

Dehydro halogenation: elimination of hydrogen halide from the substrate is known as dehydro halogenation process. This reaction leads in acidic media.

(b)

Interpretation Introduction

Interpretation:

Major products should be drawn for the given reactions.

Concept Introduction:

Elimination reaction: In elimination reaction, two substituents are removed from the substrate to give the product in presence of base. Elimination reactions are two types, E1 and E2.

E1 reaction: elimination follows stepwise mechanism. In this process, intermediate is carbocation.

E2 reaction: elimination follows concerted pathway of mechanism. In this process, there is intermediate only transition state.

Dehydration: elimination of water molecule from the substrate is known as dehydration process. This reaction leads in presence of concentrated sulfuric acid followed by heat.

Dehydro halogenation: elimination of hydrogen halide from the substrate is known as dehydro halogenation process. This reaction leads in acidic media.

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