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Chemistry · 2024 · 2 marks
Aldehydes, Ketones and Carboxylic AcidsChemical Reactions of Aldehydes, Ketones and Carboxylic Acids2 marksApplyvery short answer
CBSE 2024 · Region 4 · Set 1 · Q20
(a) Write the stepwise mechanism of nucleophilic addition reactions in the carbonyl compounds.
(a)
Write the stepwise mechanism of nucleophilic addition reactions in the carbonyl compounds.
OR
(b)
How will you convert the following :
(i)
Toluene to benzoic acid.
(ii)
Ethanol to $\displaystyle 3$-Hydroxybutanal $\displaystyle \mathbf{1} \boldsymbol{\times} \mathbf{2}$
Marking-scheme solution
(i)
(ii)
$\displaystyle \mathrm{CH_3CH_2OH} \xrightarrow{\ \mathrm{PCC}\ } \mathrm{CH_3CHO} \xrightarrow{\ \text{dil. NaOH}\ } \mathrm{CH_3-\underset{\overset{|}{OH}}{CH}-CH_2-CHO}$
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