Insights into Activation of Cobalt Pre-Catalysts for C(sp²)-H Functionalization.

ABSTRACT: The activation of readily prepared, air-stable cobalt (II) bis(carboxylate) pre-catalysts for the functionalization of C(sp²)-H bonds has been systematically studied. With the pyridine bis(phosphine) chelate, ^iPrPNP, treatment of 1-(O₂C^tBu)₂ with either B₂Pin₂ or HBPin generated cobalt boryl products. With the former, reduction to (^iPrPNP)Co^IBPin was observed while with the latter, oxidation to the cobalt(III) dihydride boryl, trans-(^iPrPNP)Co(H)₂BPin occurred. The catalytically inactive cobalt complex, Co[PinB(O₂C^tBu)₂]2, accompanied formation of the cobalt-boryl products in both cases. These results demonstrate that

SUBMITTER: Obligacion JV 

PROVIDER: S-EPMC5813819 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature