Explain Rosenmund reduction with equation.

Explanation

Aldehyde can be obtained from acid chlorides (RCOCl) by catalystic hydrogenation is presence of palladium catalyst suspended in barium sulphate. This reduction reaction is known as Rosenmund reaction.
`underset("Acid chloride")(R-overset(O)overset(||)(C)-Cl) +H_(2) overset(Pd//BaSO_(4))to underset("Aldehyde")(R-overset(O)overset(||)(C)-H)+HCl`
`underset(Acetyl chloride")(CH_(3)-overset(O)overset(||)(C)-Cl)+H_(2) overset(Pd//BaSO_(4)) to CH_(2)-overset(O)overset(||)(C)-H+HCl`