HSC Science (Electronics) 12th Board ExamMaharashtra State Board
Account
It's free!

User


Login
Create free account


      Forgot password?
Share
Notifications

View all notifications
Books Shortlist
Your shortlist is empty

Solution - Write Mechanism of Aldol Addition Reaction. - HSC Science (Electronics) 12th Board Exam - Chemistry

Questions

Write mechanism of Aldol addition reaction.

Explain the mechanism of aldol addition reaction

Solution

Aldol addition reaction:-

'Aldol' is an abbreviation of aldehyde and alcohol. When the enolate of an aldehyde or a ketone reacts at the α-carbon with the carbonyl of another molecule under basic or acidic conditions to obtain β-hydroxy aldehyde or ketone, the reaction is called an aldol reaction.

Step I: Base OH− ion abstracts a hydrogen atom from an α-carbon of aldehyde to form carbanion.

Step II: The nucleophilic carbanion or enolate ion attacks the electrophilic carbonyl carbon of the second aldehyde molecule to form an intermediate alkoxide ion. A new C–C bond is formed.

Step III: Alkoxide ion abstracts a hydrogen ion from water to form β-hydroxy aldehyde. Base OH− ion is regenerated.

Is there an error in this question or solution?

APPEARS IN

Solution for question: Write Mechanism of Aldol Addition Reaction. concept: null - Reactivity of Alpha Hydrogen in Aldehydes. For the courses HSC Science (Electronics), HSC Science (General) , HSC Science (Computer Science)
S