Question

Convert benzoic acid to benzaldehyde and then benzaldehyde

Answer 1

Explanation:

These are some of the ways to convert Benzoic Acid to Bezaldehyde:

(1) Use SOCl² , then Rosenmund's Red. by PD/BaSO⁴ (as shown in img above)

(2) Or we can use Lindlar's Catalyst. (as shown in above img)

(3) Use LiAlH⁴, then PCC or PDC

Answer 2

Answer:

When benzoic acid is treated with thionyl chloride (SOCl2) it changes into benzoyl chloride which is followed by Rosenmund's reduction, gives benzaldehyde. Use SOCl2, then Rosenmund's Red by PD/BaSO4.