
a)
Interpretation:
The product formed in the addition reaction of butanal along with the mechanism of its formation is to be predicted.
Concept introduction:
To identify:
The product formed in the addition reaction of butanal along with the mechanism of its formation.
b)
Interpretation:
The product formed in the addition reaction given along with the mechanism of its formation is to be predicted.
Concept introduction:
Aldehydes and ketones that have α- hydrogen atom undergo aldol condensation to yield a β- hydroxyl aldehyde or ketone as the product. The reaction occurs in three steps i) Abstraction of α- hydrogen by a base to yield an enolate anion ii) Attack of the anion on the carbonyl carbon of the another molecule iii) Protonation of the alkoxide intermediate.
To identify:
The product formed in the addition reaction of cyclobutanone along with the mechanism of its formation.
c)
Interpretation:
The product formed in the addition reaction given along with the mechanism of its formation is to be predicted.
Concept introduction:
The reaction given is a mixed aldol reaction. Aldehydes and ketones that have α- hydrogen atom undergo aldol condensation to yield a β- hydroxyl aldehyde or ketone as the product. The reaction occurs in three steps i) Abstraction of α- hydrogen by a base to yield an enolate anion ii) Attack of the anion on the carbonyl carbon of another molecule iii) Protonation of the alkoxide intermediate.
To identify:
The product formed in the addition reaction given along with the mechanism of its formation.
d)
Interpretation:
The product formed in the addition reaction given along with the mechanism of its formation is to be predicted.
Concept introduction:
In intramolecular aldol reactions dicarbonyl compounds such as diketones react with a base to yield a cyclic keto alcohol as the products. The reaction occurs in three steps i) Abstraction of α- hydrogen by a base to yield an enolate anion ii) Attack of the anion on the carbonyl carbon of the another molecule iii) Protonation of the alkoxide intermediate.
To identify:
The product formed in the addition reaction given along with the mechanism of its formation.

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Chapter 23 Solutions
Organic Chemistry
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