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Regiodivergent hydrosilylation, hydrogenation, [2? + 2?]-cycloaddition and C-H borylation using counterion activated earth-abundant metal catalysis.

ABSTRACT: The widespread adoption of earth-abundant metal catalysis lags behind that of the second- and third-row transition metals due to the often challenging practical requirements needed to generate the active low oxidation-state catalysts. Here we report the development of a single endogenous activation protocol across five reaction classes using both iron- and cobalt pre-catalysts. This simple catalytic manifold uses commercially available, bench-stable iron- or cobalt tetrafluoroborate salts to perform regiodivergent alkene and alkyne hydrosilylation, 1,3-diene hydrosilylation, hydrogenation, [2? + 2?]-cycloaddition and C-H borylation. The activation protocol proceeds by fluoride dissociation from the counterion, in situ formation of a hydridic activator and generation of a low oxidation-state catalyst.

SUBMITTER: Agahi R

PROVIDER: S-EPMC6524663 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Regiodivergent hydrosilylation, hydrogenation, [2π + 2π]-cycloaddition and C-H borylation using counterion activated earth-abundant metal catalysis.

Agahi Riaz R Challinor Amy J AJ Dunne Joanne J Docherty Jamie H JH Carter Neil B NB Thomas Stephen P SP

Chemical science 20190408 19

The widespread adoption of earth-abundant metal catalysis lags behind that of the second- and third-row transition metals due to the often challenging practical requirements needed to generate the active low oxidation-state catalysts. Here we report the development of a single endogenous activation protocol across five reaction classes using both iron- and cobalt pre-catalysts. This simple catalytic manifold uses commercially available, bench-stable iron- or cobalt tetrafluoroborate salts to per ...[more]

PMID: 31183059

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