Chapter 23, Problem 41PP

(a)

Interpretation Introduction

Interpretation:

The structures for products A and B in given reaction should be identified.

Concept Introduction:

Simmons–Smith reaction: It involves reaction of alkenes with organozinc reagent namely ${\text{ICH}}_{\text{2}}\text{ZnI}$ which results in formation of three–membered ring in product. This is a concerted reaction in which the configuration of starting alkene is preserved.

(b)

Interpretation Introduction

Interpretation:

The relationship between the two products A and B obtained from given reaction should be identified.

Concept Introduction:

Simmons–Smith reaction: It involves reaction of alkenes with organozinc reagent namely ${\text{ICH}}_{\text{2}}\text{ZnI}$ which results in formation of three–membered ring in product. This is a concerted reaction in which the configuration of starting alkene is preserved.

Diastereomers = The chiral centers of two compounds give opposite configuration. These compounds do not have mirror images.

(c)

Interpretation Introduction

Interpretation:

From the two obtained products, predominate product should be identified.

Concept Introduction:

Simmons–Smith reaction: It involves reaction of alkenes with organozinc reagent namely ${\text{ICH}}_{\text{2}}\text{ZnI}$ which results in formation of three–membered ring in product. This is a concerted reaction in which the configuration of starting alkene is preserved.