Cobalt(II) Coordination Polymer as a Precatalyst for Selective Hydroboration of Aldehydes, Ketones, and Imines

Highly effective
hydroboration precatalyst is developed based on
a cobalt­(II)-terpyridine coordination polymer (CP). The hydroboration
of ketones, aldehydes, and imines with pinacolborane (HBpin) has been
achieved using the recyclable CP catalyst in the presence of an air-stable
activator. A wide range of substrates containing polar CO
or CN bonds have been hydroborated selectively in excellent
yields under ambient conditions.