A Friedel-Crafts acylation reaction facilitates the conversion of benzaldehyde (\(\text{C}_6\text{H}_5\text{CHO}\)) to benzophenone (\(\text{C}_6\text{H}_5\text{COC}_6\text{H}_5\)). This process involves reacting benzaldehyde with phenyl acetyl chloride, catalyzed by a Lewis acid such as AlCl\(_3\). The introduction of the acyl group onto the benzene ring yields benzophenone.