Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub
ChemistryCarboxylic acid and their DerivativesOTHER NAME REACTIONS (INCLUDING HVZ, PERKIN'S, CLAISEN ESTER, REFORMATSKY, HUNSDIECKER)Medium2 minQB
ChemistryMediumsingle choice
Which among the following ester can give best yield in self claisen ester condensation ?
Options:
Answer:
A
Solution:
Ethyl acetate has accessible α-H and forms ethyl acetoacetate; removal of the remaining H between carbonyls drives Claisen condensation. Benzoate lacks α-H; isobutyrate lacks the required remaining α-H after condensation. Ethyl acetate is the least hindered suitable donor, A.
Source solution: An ester with at least two α-H atoms can give a favourable Claisen product because the last acid-base step drives the reaction.
Stream:JEESubject:ChemistryTopic:Carboxylic acid and their DerivativesSubtopic:OTHER NAME REACTIONS (INCLUDING HVZ, PERKIN'S, CLAISEN ESTER, REFORMATSKY, HUNSDIECKER)
⏱ 2mℹ️ Source: QB
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