Diethanolamine boronates (DABO boronates) have gained popularity as substrates for
Suzuki–Miyaura couplings due to their ease of handling as crystalline, bench-stable
solids. Similarly, 4-nitrobenzenesulfonate esters (nosylates), derived from the parent
phenols, also possess the advantage of being highly crystalline and stable. Herein,
we describe the development of suitable reaction conditions for the Suzuki–Miyaura
cross-coupling of DABO boronates with aryl and heteroaryl nosylates.
Key words
cross-coupling - homogeneous catalysis - transition metals - palladium - process chemistry