Chapter 19, Problem 19.63P

Interpretation Introduction

(a)

Interpretation:

A diene that would react with Grubbs catalyst to produce the given compound is to be drawn.

Concept introduction:

An alkene metathesis occurs when one or more alkenes are treated with Grubbs catalyst, which contains a $\text{Ru=C}$ bond. In the product of an alkene metathesis, the fragments that are joined by a double bond were initially part of a double bond to other fragments in the reactant. These reactions are particularly useful when the reactants are terminal alkenes. When the reaction produces a new ring, it is called ring-closing metathesis. A ring is formed in the reaction; therefore, two $\text{C=C}$ terminal groups in the reactant must be on the same molecule.

Interpretation Introduction

(b)

Interpretation:

A diene that would react with Grubbs catalyst to produce the given compound is to be drawn.

Concept introduction:

An alkene metathesis occurs when one or more alkenes is treated with Grubbs catalyst, which contains a $\text{Ru=C}$ bond. In the product of an alkene metathesis, the fragments that are joined by a double bond were initially part of a double bond to other fragments in the reactant. These reactions are particularly useful when the reactants are terminal alkenes. When the reaction produces a new ring, it is called a ring-closing metathesis. A ring is formed in the reaction, therefore, two $\text{C=C}$ terminal groups in the reactant must be on the same molecule.