C(sp2)-H Hydroxylation via Catalytic 1,4-Ni Migration with N2O

J Am Chem Soc. 2023 Aug 16;145(32):17564-17569. doi: 10.1021/jacs.3c07018. Epub 2023 Aug 2.

Abstract

Herein, we report a Ni-catalyzed C(sp2)-H hydroxylation of aryl bromides with N2O as an oxygen-atom donor. The reaction is enabled by a 1,4-Ni translocation that results in ipso/ortho difunctionalized products. Regioselectivity and stereocontrol are dictated by a judicious choice of the ligand backbone, thus giving access to either carbonyl or phenol derivatives and offering an opportunity to repurpose hazardous substances en route to valuable oxygen-containing building blocks.