Palladium‐catalyzedcross‐coupling reactions between carboxylic acids and arylhalides have several possible competitive pathways. Decarboxylative C−C bond coupling and C−H arylation are well established in the literature. However, direct C−O bond coupling between carboxylic acids and arylhalides has received little success. In this report, we describe a protocol for exclusive C−O bond formation,
The biocatalytic Friedel-Crafts acylation has been identified recently for the acetylation of resorcinol using activated aceticacidesters for the synthesis of acetophenone derivatives catalyzed by an acyltransferase. Because the wild-type enzyme is limited to acetic and propionic derivatives as the substrate, variants were designed to extend the substrate scope of this enzyme. By rational protein