Regioselective formylation of rhenium-oxo and gold corroles: substituent effects on optical spectra and redox potentials

Rune F Einrem; Einar Torfi Jonsson; Simon J Teat; Nicholas S Settineri; Abraham B Alemayehu; Abhik Ghosh

doi:10.1039/d1ra05525a

Regioselective formylation of rhenium-oxo and gold corroles: substituent effects on optical spectra and redox potentials

RSC Adv. 2021 Oct 28;11(54):34086-34094. doi: 10.1039/d1ra05525a. eCollection 2021 Oct 18.

Authors

Rune F Einrem¹, Einar Torfi Jonsson¹, Simon J Teat², Nicholas S Settineri^{2

3}, Abraham B Alemayehu¹, Abhik Ghosh¹

Affiliations

¹ Department of Chemistry, UiT - The Arctic University of Norway N-9037 Tromsø Norway abraham.alemayehu@uit.no abhik.ghosh@uit.no.
² Advanced Light Source, Lawrence Berkeley National Laboratory Berkeley CA 94720-8229 USA.
³ Department of Chemistry, University of California, Berkeley Berkeley California 94720 USA.

Abstract

Vilsmeier-Haack formylation of ReO and Au meso-triarylcorroles over 16-18 hours affords moderate to good yields (47-65%) of the ReO-3-formyl and Au-3,17-diformyl derivatives in a highly regioselective manner. Formylation was found to effect substantial upshifts for redox potentials (especially the reduction potentials) as well as significant to dramatic redshifts for both the Soret and Q bands.