Chapter 7, Problem 7.13P

Interpretation Introduction

(a)

Interpretation:

The product for the given nucleophilic addition step with appropriate curved arrows is to be drawn.

Concept introduction:

In the nucleophilic addition step, the nucleophile adds to the polar $\text{π}$ bond. The nucleophile is relatively electron rich, and the polar $\text{π}$ bond is relatively electron poor. Thus, the curved arrow drawn from the nucleophile to the polar $\text{π}$ bond represents the flow of electrons from an electron rich site to an electron poor site. The first curved arrow is drawn from the negatively charged atom of the nucleophile to the less electronegative atom of the polar $\text{π}$ bond, and the second curved arrow is drawn from the less electronegative atom to the double bonded more electronegative atom. The atom bonded to metal acts as a nucleophile.

Interpretation Introduction

(b)

Interpretation:

The product for the given nucleophilic addition step with appropriate curved arrows is to be drawn.

Concept introduction:

In the nucleophilic addition step, the nucleophile adds to the polar $\text{π}$ bond. The nucleophile is relatively electron rich, and the polar $\text{π}$ bond is relatively electron poor. Thus, the curved arrow drawn from the nucleophile to the polar $\text{π}$ bond represents the flow of electrons from an electron rich site to an electron poor site. The first curved arrow is drawn from the negatively charged atom of the nucleophile to the less electronegative atom of the polar $\text{π}$ bond, and the second curved arrow is drawn from the less electronegative atom to the double bonded more electronegative atom. The atom bonded to metal acts as a nucleophile.