Abstract
The well-defined lithium NCN-Pincer magnesiate complex [Li (THF)4][NCN-MgBr2] 2 based on a bis(imino)aryl ligand has been successfully prepared, crystallographic characterized and employed as an efficient catalyst for hydroboration of a wide range of aldehydes and ketones with pinacolborane (HBpin) at room temperature. Both aldehyde and ketone hydroboration proceeded efficiently (>99% conversion in <15 min) and could be directly carried out in a CDCl3 solution. In addition, chemoselective hydroboration of aldehydes over ketones was also achieved under these conditions.
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