How is 4,4,5,5-Tetramethyl-2-(1,1':3',1''-terphenyl-5'-yl)-1,3,2-dioxaborolane (CAS: 1036378-83-2) typically synthesized?

4,4,5,5-Tetramethyl-2-(1,1':3',1''-terphenyl-5'-yl)-1,3,2-dioxaborolane can be synthesized via a multistep process. Typically, it involves the protection of the active boron site using a protective group, followed by coupling with a functionalized boronic acid or ester. Reaction conditions often include palladium catalysts and base additives. The yield of the final product is generally moderate to high, with selectivity towards the desired product.