For the given transformation a reasonable mechanism need to be drawn. Concept introduction: Aldol condensation reaction is where the aldol addition product undergoes dehydration to give a conjugated enone. In organic chemistry condensation reaction means loss of small molecules. For aldol condensation reaction to take place the starting material should have two α hydrogens in the same carbon atom. The driving force for aldol condensation reaction is the formation of conjugated system. The steps involved in aldol condensation reaction are, Deprotonation of carbon Attach of enolate ion with the aldehyde ( nucleophilic attack ) Protonation of the alkoxide ion to give aldol product Dehydration of the aldol addition product to form conjugated enone (aldol condensation product) If the aldol condensation reaction takes place between two carbonyl compounds it is known as intermolecular aldol condensation reaction and if the same takes place within a single molecule means it is known as intramolecular aldol condensation reaction. Retrol-Aldol process is the one in which the intermediates formed are the same but they appear in reverse order compared to Aldol condensation process.

Question

Want to see the full answer?

Answer 1

Question

Chapter 22, Problem 85PP

Interpretation Introduction

Interpretation:

For the given transformation a reasonable mechanism need to be drawn.

Concept introduction:

Aldol condensation reaction is where the aldol addition product undergoes dehydration to give a conjugated enone. In organic chemistry condensation reaction means loss of small molecules. For aldol condensation reaction to take place the starting material should have two α hydrogens in the same carbon atom. The driving force for aldol condensation reaction is the formation of conjugated system. The steps involved in aldol condensation reaction are,

Deprotonation of carbon

Attach of enolate ion with the aldehyde (nucleophilic attack)

Protonation of the alkoxide ion to give aldol product

Dehydration of the aldol addition product to form conjugated enone (aldol condensation product)

If the aldol condensation reaction takes place between two carbonyl compounds it is known as intermolecular aldol condensation reaction and if the same takes place within a single molecule means it is known as intramolecular aldol condensation reaction.

Retrol-Aldol process is the one in which the intermediates formed are the same but they appear in reverse order compared to Aldol condensation process.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

5. Propose a Synthesis for the molecule below. You may use any starting materials containing 6 carbons or less (reagents that aren't incorporated into the final molecule such as PhзP do not count towards this total, and the starting material can have whatever non-carbon functional groups you want), and any of the reactions you have learned so far in organic chemistry I, II, and III. Your final answer should show each step separately, with intermediates and conditions clearly drawn. H3C CH3

State the name and condensed formula of isooxazole obtained by reacting acetylacetone and hydroxylamine.

State the name and condensed formula of the isothiazole obtained by reacting acetylacetone and thiosemicarbazide.