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The reaction,
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}+\mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5 \longrightarrow$
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCOOC}_2 \mathrm{H}_5$, is called
Options:
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}+\mathrm{CH}_3 \mathrm{COOC}_2 \mathrm{H}_5 \longrightarrow$
$\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCOOC}_2 \mathrm{H}_5$, is called
Solution:
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Verified Answer
The correct answer is:
Claisen condensation
Claisen condensation : Aromatic aldehyde condenses with esters having $\alpha$-hydrogen atoms like ethyl acetate, in the presence of metallic Na and $\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}$ to form esters of $\alpha, \beta$-unsaturated acids.
$\begin{array}{r}\underset{\text { benzaldehyde }}{\mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}}+\underset{\text { ethyl acetate }}{\mathrm{H}_2 \mathrm{CH}-\mathrm{COOC}_2 \mathrm{H}_5 \xrightarrow[\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}]{\mathrm{Na}}} \\ \underset{\text { ethyl cinnamate }}{\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCOOC}_2 \mathrm{H}_5+\mathrm{H}_2 \mathrm{O}}\end{array}$
$\begin{array}{r}\underset{\text { benzaldehyde }}{\mathrm{C}_6 \mathrm{H}_5 \mathrm{CHO}}+\underset{\text { ethyl acetate }}{\mathrm{H}_2 \mathrm{CH}-\mathrm{COOC}_2 \mathrm{H}_5 \xrightarrow[\mathrm{C}_2 \mathrm{H}_5 \mathrm{OH}]{\mathrm{Na}}} \\ \underset{\text { ethyl cinnamate }}{\mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}=\mathrm{CHCOOC}_2 \mathrm{H}_5+\mathrm{H}_2 \mathrm{O}}\end{array}$
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