versatile and atom economical methods for the construction of various carbon–carbon and
carbon–heteroatom bonds by combining two C (X)–H (X= heteroatom) bonds. Along this
line, direct acyloxylation of C–H bonds with carboxylic acids has emerged as a powerful and
green approach for the synthesis of structurally diverse esters. In this focus-review we will
describe recent progress in direct esterification of aromatic C–H bonds with special …