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Karnataka Board PUCPUC Science 2nd PUC Class 12

Complete the synthesis by giving missing starting material, reagent or product. CA6HA5CHO....................+......→Δdil⋅NaOH...CHA3CHA2CHO............

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Question

Complete the synthesis by giving missing starting material, reagent or product.

\[\begin{array}{cc}
\ce{C6H5CHO}\phantom{............}\\
\phantom{........}\ce{+\phantom{......}\ce{->[dil.NaOH][\Delta]}}\phantom{...}\\
\ce{CH3CH2CHO}\phantom{............}
\end{array}\]

Chemical Equations/Structures
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Solution

\[\begin{array}{cc}
\phantom{......................................................}\ce{CH3}\\
\phantom{...................................................}|\\
\ce{\underset{Benzaldehyde}{C6H5CHO} + \underset{Propanal}{CH3CH2CHO} ->[dil.NaOH][Claisen-Schimdt reaction]\underset{2-Methyl-3-phenyl-prop-2-enal}{C6H5\overset{3}{C}H = \overset{2}{C} - \overset{1}{C}HO}}
\end{array}\]

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Chapter 8: Aldehydes, Ketones and Carboxylic Acids - Exercises [Page 257]

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NCERT Chemistry Part 1 and 2 [English] Class 12
Chapter 8 Aldehydes, Ketones and Carboxylic Acids
Exercises | Q 8.17 (vii) | Page 257

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