Question

How will you prepare 4—methyl - benzaldehyde from toluene.

Answer 1

4 - methyl-benzaldehyde is formed by $\textbf{Gatterman - Koch reaction}$

when toluene is treated with carbon monoxide and hydrogen chloride in the process of anhydrous aluminium chloride or cuprous chloride, it gives 4-methyl- benzaldehyde or substituted 4 - methyl-benzaldehyde .

reaction is shown in figure,

Answer 2

Answer:

4 - methyl-benzaldehyde is formed by

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when toluene is treated with carbon monoxide and hydrogen chloride in the process of anhydrous aluminium chloride or cuprous chloride, it gives 4-methyl- benzaldehyde or substituted 4 - methyl-benzaldehyde .

reaction is shown in figure,