Chapter 21, Problem 53P

Interpretation Introduction

Interpretation:

The preparation of the given target molecules using the compounds shown as the sources of all of the carbons and any necessary organic or inorganic reagents is to be stated.

Concept introduction:

Ester on reaction with one equivalent of Grignard reagent gives ketone. Whereas, esters on reaction with two equivalents of Grignard reagent give tertiary alcohol.

The full form of PCC is pyridinium chlorochromate. It acts as mild oxidizing agent. It oxidizes primary alcohols into aldehyde and secondary alcohol into ketones.

A chemical reaction that involves {4+2} cycloaddition is called Diels-Alder reaction. The reactant molecules that give rise to the product are diene and dienophile. The rate of reaction is fast when the electronegative group is attached to dienophile. In this type of reaction, syn addition takes place.