| Title: |
Tandem Oligomerization-Hydrogenation Using Brønsted Acidic Iridium Hydride Catalysts |
| Authors: |
Austin J. Leitgeb; Scott M. Chapp; Caleb D. Fast; Kathryn E. Fink; Nathan D. Schley |
| Publication Year: |
2025 |
| Collection: |
The University of Auckland: Figshare |
| Subject Terms: |
Biophysics; Biochemistry; Microbiology; Molecular Biology; Biotechnology; Infectious Diseases; Biological Sciences not elsewhere classified; Chemical Sciences not elsewhere classified; mechanistic experiments argue; gasoline additive isooctane; cationic hydride precursor; cationic oligomerization; tandem oligomerization; proton transfer; olefin substrate; major product; isobutene competes; ionic mechanism; hydrogenation sequence; direct reduction; dihydrogen heterolysis |
| Description: |
Cationic iridium complexes bearing the tris[3,5-bis(trifluoromethyl)phenyl]phosphine ligand unexpectedly give acidic metal hydrides. Net-dihydrogen heterolysis at such complexes provides hydrogenation catalysis by an ionic mechanism. The direct reduction of isobutene competes with cationic oligomerization to give the gasoline additive isooctane (2,4,4-trimethylpentane) as a major product of a tandem oligomerization/hydrogenation sequence. Mechanistic experiments argue for the role of neutral iridium hydrides generated by the proton transfer of a cationic hydride precursor to an olefin substrate. |
| Document Type: |
article in journal/newspaper |
| Language: |
unknown |
| DOI: |
10.1021/acs.organomet.5c00160.s001 |
| Availability: |
https://doi.org/10.1021/acs.organomet.5c00160.s001; https://figshare.com/articles/journal_contribution/Tandem_Oligomerization-Hydrogenation_Using_Br_nsted_Acidic_Iridium_Hydride_Catalysts/29538621 |
| Rights: |
CC BY-NC 4.0 |
| Accession Number: |
edsbas.3376DFC3 |
| Database: |
BASE |