Product Application: Bis(hexylene glycolato)diboron can be used as a reagent: 1. To prepare aryl boronate esters via metal-catalyzed direct C-H borylation of aryl compounds. 2. In the chemoselective synthesis of C−C coupling products via nickel catalyzed coupling of primary and secondary alkyl halides. 3. In the nickel-catalyzed regioselective arylboration of terminal nonactivated alkenes to yield alkyl boranes.