Complex sentence: Metal-catalyzed C-H Borylation reactions are transition metal catalyzed organic reactions that produce an organoboron compound through functionalization of aliphatic and aromatic C-H bonds and are therefore useful reactions for carbon-hydrogen bond activation.
Split into simpler sentences: Metal-catalyzed C-H Borylation reactions are transition metal catalyzed organic reactions that produce an organoboron compound through functionalization of aliphatic and aromatic C-H bonds. Therefore metal-catalyzed C-H borylation reactions are useful reactions for carbon-hydrogen bond activation.