To convert benzaldehyde to benzophenone following steps are carried
Step 1: Converting benzaldehyde to benzoic acid
When benzaldehyde is oxidized in the presence of acidified potassium permanganate, it results in the formation of benzoic acid.
Step 2: Converting benzoic acid to benzene
When benzoic acid is reacted with soda lime (mixture of NaOH and CaO) with heat, it results in the formation of benzene.
Step 3: Converting benzene to benzophenone
When benzene is treated with benzoyl chloride in the presence of, it leads to the formation of benzophenone. This reaction is known as Friedel-Craft acylation.