Question

25. Dieckman condensation reaction is governed by _____ mechanism.
(A) Carbocation
(B) Carbene
(C) Carbanion
(D) Free radical

Answer 1

Answer:

(C) Carbanion

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Answer 2

Answer:

‘Dieckman condensation’ reaction is governed by Carbene mechanism.

Explanation:

The Dieckmann condensation being intramolecular chemical reaction uses the base of alkoxide to create a ‘carbon-carbon’ between two tethered ester groups for producing β-keto ester. Walter Dieckmann was the scientist whose name was given to the theory.  

Another equivalent molecular theory is the Claisen condensation. The chemical reaction leads to forming of enolate and alcohol because of the presence of n α-hydrogen which is absorbed by the base.