Chapter 9, Problem 9.82AP

Interpretation Introduction

(a)

Interpretation:

The mechanism for reaction of conversion of $\text{1-bromo-1-methylcyclohexane}$ into methylcyclohexane by the use of tributyltin hydride $\left({\text{Bu}}_{\text{3}}\text{Sn}-\text{H}\right)$ is to be predicted.

Concept introduction:

The general steps followed by free-radical reaction are stated below:

• First step is initiation that involves formation of radical.
• Second step is propagation.
• Third step is the termination that involves the formation of stable bond.

Interpretation Introduction

(b)

Interpretation:

The two reaction sequences for reaction of conversion of $\text{1-bromo-1-methylcyclohexane}$ into methylcyclohexane by the use reagents other than of tributyltin hydride $\left({\text{Bu}}_{\text{3}}\text{Sn}-\text{H}\right)$ are to be predicted.

Concept introduction:

Grignard reagents are organometallic compounds which are prepared using alkyl halides in presence of magnesium metal in dry ether. These reagents act as strong nucleophiles and bases.

Alkyl halides undergo elimination reaction in the presence of a base to form alkenes. The mechanism of the reaction followed depends on the base used.