Organic Chemistry

Dual-Function, Light Switchable Cobalt Catalysis via Active Site Metamorphosis

Authors

Abstract

Switchable catalysis offers opportunities to control the rate or selectivity of a reaction via a stimulus such as pH or light. However, few examples of switchable catalytic systems that can facilitate multiple processes exist. Here we report a rare example of such dual-functional, switchable catalysis. Featuring an easily prepared, bench-stable cobalt(I) hydride complex in conjunction with pinacolborane, we can completely alter the reaction outcome between two widely employed transformations – olefin migration and hydroboration – with visible light as the sole trigger. This dichotomy arises from ligand photodissociation which leads to metamorphosis of the active catalytic site, resulting in divergent mechanistic pathways.

Content

Thumbnail image of Cobalt Photoswitch ChemRxiv.pdf

Supplementary material

Thumbnail image of Cobalt Photoswitch SI ChemRxiv.pdf
Cobalt Photoswitch SI ChemRxiv