Chapter 16, Problem 53P

Interpretation Introduction

Interpretation:

The reaction sequences involved in the conversion of the given reactant to products is to be sketched.

Concept introduction:

Aromatic ring undergoes halogen substitution to form aryl halide by reacting with halogen in the presence of Lewis acid like ${\text{FeBr}}_{\text{3}}$.

The grignard reagent or RMgX is a reagent that can be prepared from an alkyl halide and magnesium in the ether. It adds on the alkyl group to the carbonyl moiety and converts aldehydes or ketones into alcohols. The reaction of cyanide with RMgX forms ketones. It reacts with carbon dioxide to form carboxylic acid.

The organic reaction in which the conversion of an alkyl halide (primary or secondary) and a ketone or an aldehyde into an alkene takes place using triphosphine and a base species, is known as Witting reaction.

Ethylene glycol protects carbonyl compounds by forming cyclic acetals.

Dienes react with dienophiles in high-temperature conditions to form cyclic products and the reaction is known as Diels Alder reaction.