Organoboron species are useful building blocks for pharmaceuticals and other valuable materials because B–C bonds can be manipulated almost at will. For example, the Suzuki-Miyuara coupling of boronic acids or esters with alkenyl or aryl halides and their triflates is a mild, and versatile method that has revolutionized the construction aryl C–C bonds.  While alkyl boron reagents are commonly obtained by hydroboration of olefins, aryl boronic acids and esters are usually prepared from the corresponding aryl halide. The thermal, catalytic coupling of C–H and B–H bonds that was invented in 1999 has emerged as an efficient method for preparing boronic acids. It is attractive because the Ir catalysts typically employed are functional group tolerant (alkyl, halo-, carboxy, alkoxy-, and protected amino), regioselective, and efficient. The direct production of aryl and heteroaryl boronic esters from hydrocarbon feed stocks with hydrogen gas as the sole byproduct minimizes waste streams and reduces the energy requirements associated with aryl boronate synthesis. Moreover, the borylation products can often be transformed without isolation.  Recent advances and applications of this chemistry will be presented.