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Base metal catalysts for photochemical C-H borylation that utilize metal-metal cooperativity.

Authors
  • Mazzacano, Thomas J
  • Mankad, Neal P
Type
Published Article
Journal
Journal of the American Chemical Society
Publisher
American Chemical Society
Publication Date
Nov 20, 2013
Volume
135
Issue
46
Pages
17258–17261
Identifiers
DOI: 10.1021/ja408861p
PMID: 24074248
Source
Medline
License
Unknown

Abstract

Heterobimetallic Cu-Fe and Zn-Fe complexes catalyze C-H borylation, a transformation that previously required noble metal catalysts. The optimal catalyst, (IPr)Cu-FeCp(CO)2, exhibits efficient activity at 5 mol% loading under photochemical conditions, shows only minimal decrease in activity upon reuse, and is able to catalyze borylation of a variety of arene substrates. Stoichiometric reactivity studies are consistent with a proposed mechanism that exploits metal-metal cooperativity and showcases bimetallic versions of the classical organometallic processes, oxidative addition and reductive elimination.

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