Draw the most stable form of the major product in the following reaction. Draw the most...

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Draw the most stable form of the major product in

Draw the most stable form of the major product in the following reaction.

science chemistry

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Answer 1

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Answer #1

Concepts and reason

Claisen Condensation:

The claisen condensation is similar to aldol condensation. An ester has alpha hydrogens, which undergo the condensation reaction.

Fundamentals

The base that is most commonly used in the claisen condensation reaction is alkoxide, ${\rm{R}}{{\rm{O}}^{\rm{ - }}}{\rm{N}}{{\rm{a}}^{\rm{ + }}}$ . The ester, on reaction with base, forms an ester enolate, which again reacts with another molecule of ester.

The enolate is a good nucleophile, and ester carbonyl carbon is electrophilic by nature.

The final product of this reaction is a beta-ketoester.

The overall scheme of claisen condensation is as follows:

$NaOR RHC—С— OR RH2C -C OR ester enolate ester RH2C —с— OR ester RO C OR RH2C_ Н,О* R\ beta-ketoester Н-О ROH + water alco$

ГОС-H,
+ НОC,Hs
о-—

Н,О
ОСН-СH;
+
H20

Ans:

The most stable form of the major product in the given reaction is:

1. NaOC2H5
2. H;О*
2
СН:ОН
с
с

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Answer 2

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