CBSE Class 12 Chemistry 2022 Term 2 Delhi Set 3

Question : 1

Total: 12

SECTION - A

Predict the reagent for carrying out the following transformations:
(a) Benzoyl chloride to Benzaldehyde
(b) Ethanal to 3-hydroxy butanal
(c) Ethanoic acid to 2-chloroethanoic acid

Solution:

(i) Rosenmund Reduction in presence of Lindlar's Catalyst (H2∕Pd−BaSO4).
(ii) Aldol Condensation in presence of dil. NaOH.
(iii) Hell - Volhard Zelinsky Reaction in presence of Cl2∕ Red Phosphorous.

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