Chiral BINOL-based borate counterions: from cautionary tale on anion stability to enantioselective Cu-catalyzed cyclopropanation.
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DOI: 10.1039/d2cc05924j
Abstract: The chiral weakly coordinating (3,3'-biphenyl-BINOL)BF2 anion can be generated by the reaction of the BINOL derivative with Cu(NCMe)4BF4. Structural analysis suggest the anion is weakly coordinating to Cu+. However, its use in cyclopropanation reactions leads… read more here.
Keywords: based borate; binol; cyclopropanation; binol based ... See more keywords