Abstract
Metal-ligand cooperation (MLC) by dearomatization/aromatization provides a unique way for bond activation, which has led to the discovery of various acceptorless dehydrogenative coupling reactions. However, most of the studies are based on pincer complexes with a central nitrogen donor. Aiming at exploration of the possibility of MLC by PCP-type pincer complexes, we report herein the synthesis, characterization, structure, and reactivity of pyridine-based PCP-Ru complexes. X-ray structures and DFT calculations indicate a carbenoid character of quaternized pyridine-based PCP-Ru complexes. These complexes undergo dearomatization by direct deprotonation, and the dearomatized complex can react with hydrogen, alcohols, or nitriles to regain aromatization via MLC.
| Original language | English |
|---|---|
| Pages (from-to) | 7554-7561 |
| Number of pages | 8 |
| Journal | Journal of the American Chemical Society |
| Volume | 141 |
| Issue number | 18 |
| Early online date | 19 Apr 2019 |
| DOIs | |
| Publication status | Published - 8 May 2019 |
Funding
This research was supported by the European Research Council (ERC AdG 692775). D.M. holds the Israel Matz Professorial Chair of Organic Chemistry. S.T. is thankful to the Israel Planning and Budgeting Committee (PBC) for a postdoctoral fellowship. N.v.W. is supported by the Foreign Postdoctoral Fellowship Program of the Israel Academy of Sciences and Humanities.
All Science Journal Classification (ASJC) codes
- Catalysis
- General Chemistry
- Biochemistry
- Colloid and Surface Chemistry