The conversion of benzaldehyde (\(\text{C}_6\text{H}_5\text{CHO}\)) to benzophenone (\(\text{C}_6\text{H}_5\text{COC}_6\text{H}_5\)) is achieved via Friedel-Crafts acylation. This process involves reacting benzaldehyde with phenyl acetyl chloride, catalyzed by a Lewis acid like AlCl\(_3\). The acylation introduces the acyl group onto the benzene ring, yielding benzophenone.