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  4. Rosenmund reduction is used for the preparation of

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Q. Rosenmund reduction is used for the preparation of

ManipalManipal 2010Aldehydes Ketones and Carboxylic Acids

Solution:

When acid chlorides are treated with $ Pd/BaS{{O}_{4}}, $ they get converted into aldehydes. This reaction is known as Rosenmunds reaction and is used to prepare aldehydes only.
$ \underset{\text{acid chloride}}{RCOCl} + H_2 \xrightarrow{Pd/BaSO_4} RCHO + HCl$