a reaction for the synthesis of hydrocarbons and ketones by the alkylation or acylation of an aromatic compound in the presence of a catalyst, typically anhydrous aluminum chloride.
Origin: 1895–1900; after French chemist Charles Friedel (1832–99) and U.S. chemist J. M. Crafts (1832–1917), its discoverers
[free-del-krafts, -krahfts] 
