Magnesium bromide‐catalyzed solvent‐free hydroboration of imines: An eco‐friendly approach to amines

Over the past decade, significant progress has been made in the area of catalytic hydroboration reactions, wherein a variety of catalytic systems have been reported. To develop green and sustainable methods, an environmental friendly and cost‐effective alternatives to traditional expensive, toxic metal catalysts are required. In this study, we report a simple and high‐yielding magnesium salt (MgBr 2 )‐catalyzed hydroboration reaction of imines with pinacolborane (HBpin). The chemoselective hydroboration of imines over ester, amide, nitrile, alkene, and alkyne functional groups was also evaluated. In addition, gram scale preparation, one‐pot N–C coupling reactions, and density functional theory mechanistic studies were performed.