Dieckmann condensation give alpha, beta-Unsaturated aldehyde LDA is Lithium Diis

Question

Dieckmann condensation give alpha, beta-Unsaturated aldehyde LDA is Lithium Diisopropylamine. LDA can convert a carbonyl compound completely to its enolate. The HVZ (Hell Volhard- Zelinsky) reaction replaces a hydrogen atom with a bromine atom on alpha carbon of a carboxylic acid (a-bromoacid). HVZ reaction needs SOCI_2 Intramolecular aldol reactions of diketones are often used for making five- and six-membered. An intramolecular Claisen cyclization is also called Dieckmann condensation or a Die cyclization. Crossed Claisen Condensation possible between two esters with at least one alpha-H in alpha-keto ester is the product of Dieckman Condensation Lactam is a cyclic amide Lactone is not a cyclic ester 1, 2 and 1, 4 addition is possible with alpha, beta-unsaturated ketone Ester can be synthesized by a reaction between acid and an alcohol Acetic anhydride can be obtained from acid.

Explanation / Answer

a] False

The Dieckmann condensation is the intramolecular chemical reaction of diesters with base to give -ketoesters

b] True

Lithium diisopropylamide abbreviated as LDA) is a chemical compound with the molecular formula [(CH3)2CH]2NLi. It is used as a strong base and has been widely accepted due to its good solubility in non-polar organic solvents and non-nucleophilic nature.

c] True

d] True

The Hell-Volhard-Zelinsky reaction is an organic reaction used to convert a carboxylic acid with an -hydrogen and a halogen, to an -halo carboxylic acid, using a phosphorous catalyst and water.

e] False

f] True

Intramolecular aldol reaction is an important pathway for the synthesis of cyclic compounds.

Five- and six-membered rings may be easily achieved by intramolecular aldol reactions.

Related Questions

Navigate

• Browse (All)
• Browse D
• Subjects

---

---

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