Friedel–Crafts reaction

The Friedel–Crafts reaction is a chemical process used to attach a new group, often an alkyl or acyl group, to an aromatic ring like benzene. It involves using a catalyst, usually a metal chloride, to help the new group attach to the ring more easily. This reaction is important in making various chemicals, including pharmaceuticals and plastics. It allows chemists to modify and build complex molecules efficiently by adding specific groups to aromatic compounds, changing their properties or making new substances altogether.