(a) Interpretation: A boat conformation for the given compound is to be drawn. Concept introduction: The conformation of cyclohexane is a type of 3 − D shape of cyclohexane molecule. There are total four types of significant conformations of cyclohexane exists which are chair conformation, half-chair conformation, boat conformation and twist-boat conformation. The switching of cyclohexane molecule is very easy between the four conformations.

Question

Classify each conformation as staggered or eclipsed around the indicated bond, and rank the conformations in order of increasing stability.

Answer 1

Question

Chapter 7, Problem 7.6P

Interpretation Introduction

(a)

Interpretation:

A boat conformation for the given compound is to be drawn.

Concept introduction:

The conformation of cyclohexane is a type of 3−D shape of cyclohexane molecule. There are total four types of significant conformations of cyclohexane exists which are chair conformation, half-chair conformation, boat conformation and twist-boat conformation. The switching of cyclohexane molecule is very easy between the four conformations.

Interpretation Introduction

(b)

Interpretation:

A boat conformation for the given compound is to be drawn.

Concept introduction:

The conformation of cyclohexane is a type of 3−D shape of cyclohexane molecule. There are total four types of significant conformations of cyclohexane exists which are chair conformation, half-chair conformation, boat conformation and twist-boat conformation. The switching of cyclohexane molecule is very easy between the four conformations.

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Classify each conformation as staggered or eclipsed around the indicated bond, and rank the conformations in order of increasing stability.

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1. What happens to the axial bonds when a chair conformation is converted to another chair conformation? The overall process of converting one chair conformation to another chair conformation is known as RING INVERSION or ring flipping and is a very rapid process. The cyclohexane ring inverts approximately 10 time a second at room temperature. 2. Show this interconversion by drawing the two chair conformations and putting a reversible arrow between them to indicate a dynamic equilibrium. 3. If we have a methylcyclohexane molecule and this undergoes ring inversion, whatwill be the resulting structure? ?