Photosensitized, energy transfer-mediated organometallic catalysis through electronically excited nickel(II)

Eric R. Welin, Chip Le, Daniela M. Arias-Rotondo, James K. McCusker, David W.C. MacMillan

Research output: Contribution to journalArticle

161 Scopus citations

Abstract

Transition metal catalysis has traditionally relied on organometallic complexes that can cycle through a series of ground-state oxidation levels to achieve a series of discrete yet fundamental fragment-coupling steps. The viability of excited-state organometallic catalysis via direct photoexcitation has been demonstrated. Although the utility of triplet sensitization by energy transfer has long been known as a powerful activation mode in organic photochemistry, it is surprising to recognize that photosensitization mechanisms to access excited-state organometallic catalysts have lagged far behind. Here, we demonstrate excited-state organometallic catalysis via such an activation pathway: Energy transfer from an iridium sensitizer produces an excited-state nickel complex that couples aryl halides with carboxylic acids. Detailed mechanistic studies confirm the role of photosensitization via energy transfer.

Original languageEnglish (US)
Pages (from-to)380-385
Number of pages6
JournalScience (New York, N.Y.)
Volume355
Issue number6323
DOIs
StatePublished - Jan 27 2017

All Science Journal Classification (ASJC) codes

  • General

Fingerprint Dive into the research topics of 'Photosensitized, energy transfer-mediated organometallic catalysis through electronically excited nickel(II)'. Together they form a unique fingerprint.

  • Cite this