Volume 54, Issue 23 pp. 6809-6813
Communication

Trifluoromethylthiolation of Aryl Iodides and Bromides Enabled by a Bench-Stable and Easy-To-Recover Dinuclear Palladium(I) Catalyst

Dr. Guoyin Yin

Dr. Guoyin Yin

Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany) http://www.schoenebeck.oc.rwth-aachen.de/

Search for more papers by this author
Indrek Kalvet

Indrek Kalvet

Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany) http://www.schoenebeck.oc.rwth-aachen.de/

Search for more papers by this author
Prof. Dr. Franziska Schoenebeck

Corresponding Author

Prof. Dr. Franziska Schoenebeck

Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany) http://www.schoenebeck.oc.rwth-aachen.de/

Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany) http://www.schoenebeck.oc.rwth-aachen.de/Search for more papers by this author
First published: 27 April 2015
Citations: 178

We thank RWTH Aachen University and MIWF NRW for funding. We gratefully acknowledge the computing time granted on the RWTH Bull Cluster in Aachen (grant number JARA0091).

Graphical Abstract

Pd double team: The cross-coupling enabled by an air-, moisture-, and thermally stable dinuclear PdI complex was explored. Highly efficient CSCF3 coupling of a range of aryl iodides and bromides was achieved and the catalyst was recovered by simple column chromatography, thus highlighting its robustness and the possibility for catalyst recycling. Kinetic and computational data support the feasibility of dinuclear PdI catalysis.

Abstract

While palladium catalysis is ubiquitous in modern chemical research, the recovery of the active transition-metal complex under routine laboratory applications is frequently challenging. Described herein is the concept of alternative cross-coupling cycles with a more robust (air-, moisture-, and thermally-stable) dinuclear PdI complex, thus avoiding the handling of sensitive Pd0 species or ligands. Highly efficient CSCF3 coupling of a range of aryl iodides and bromides was achieved, and the recovery of the PdI complex was accomplished via simple open-atmosphere column chromatography. Kinetic and computational data support the feasibility of dinuclear PdI catalysis. A novel SCF3-bridged PdI dimer was isolated, characterized by X-ray crystallography, and verified to be a competent catalytic intermediate.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.