Why is it important to add acetone slowly and dropwise to the mixture? Aldol Con

Question

Why is it important to add acetone slowly and dropwise to the mixture?

Aldol Condensation: Synthesis of Dibenzylideneacetone

Step 1: Generation of an enolate in the presence of a base (catalyst) OH (Acetone) An enolate ion Step 2: Nucleophilic addition of an enolate to the electrophilic carbonyl carbon followed by protonation- An ALDOL (-Hydroxycarbonyl compound) > O C O OH +HO (Nucleophilic attack) (Protonation) An Aldol Catalyst Step 3: Dehydration on an aldo-> ,-unsaturated carbonyl compound OH + H20 HO An Aldol Benzalacetone Catalyst Benza!acetone has acidic -hydrogens; if excess benzaldehyde is used, the enolate generated from benzalacetone will react with another molecule of benzaldehyde (repeat the steps). Complete the following Step 4: An enolate generation from benzalacetone in the presence of a base OH an enolate ion Benzalacetone Step 5: Nucleophilic attack on another molecule of benzaldehyde followed by protonation Step 6: Dehydrationdibenzalacetone

Explanation / Answer

It is important to add acetone slowly and dropwise to the mixture in Aldol Condensation as the attack of an - carbon (in the form of an enolate ion) of acetone on an electropositive carbonyl of a benzaldehyde.i.e. also in the Synthesis of Dibenzylideneacetone deprotonation of acetone takes place in first step and generation of enolate ion which act as a nucleophile and attacks the electrophile.

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.