Submitted by jag4016 on September 24, 2021 - 1:43pm
Title | A Proton-Switchable Bifunctional Ruthenium Complex That Catalyzes Nitrile Hydroboration. |
Publication Type | Journal Article |
Year of Publication | 2015 |
Authors | Geri JB, Szymczak NK |
Journal | J Am Chem Soc |
Volume | 137 |
Issue | 40 |
Pagination | 12808-14 |
Date Published | 2015 Oct 14 |
ISSN | 1520-5126 |
Keywords | Boron, Catalysis, Crystallography, X-Ray, Nitriles, Protons, Ruthenium |
Abstract | A new bifunctional pincer ligand framework bearing pendent proton-responsive hydroxyl groups was prepared and metalated with Ru(II) and subsequently isolated in four discrete protonation states. Stoichiometric reactions with H2 and HBPin showed facile E-H (E = H or BPin) activation across a Ru(II)-O bond, providing access to unusual Ru-H species with strong interactions with neighboring proton and boron atoms. These complexes were found to promote the catalytic hydroboration of ketones and nitriles under mild conditions, and the activity was highly dependent on the ligand's protonation state. Mechanistic experiments revealed a crucial role of the pendent hydroxyl groups for catalytic activity. |
DOI | 10.1021/jacs.5b08406 |
Alternate Journal | J Am Chem Soc |
PubMed ID | 26425797 |