Abstract
The discovery of an ultrafast cross-coupling of alkyland aryllithium reagents with a range of aryl bromides is presented. The essential role of molecular oxygen to form the active palladium catalyst was established; palladium nanoparticles that are highly active in cross-coupling reactions with reaction times ranging from 5 s to 5 min are thus generated in situ. High selectivities were observed for a range of heterocycles and functional groups as well as for an expanded scope of organolithium reagents. The applicability of this method was showcased by the synthesis of the [C-11]-labeled PET tracer celecoxib.
Original language | English |
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Pages (from-to) | 3354-3359 |
Number of pages | 6 |
Journal | Angewandte Chemie - International Edition |
Volume | 56 |
Issue number | 12 |
Early online date | 14-Feb-2017 |
DOIs | |
Publication status | Published - 13-Mar-2017 |
Keywords
- cross-coupling
- isotope labeling
- nanoparticles
- organolithium regents
- palladium
- CROSS-COUPLING REACTIONS
- RAPID ROOM-TEMPERATURE
- ARYLBORONIC ACIDS
- PD NANOPARTICLES
- CONTINUOUS-FLOW
- ARYL CHLORIDES
- SUPPORTED PD
- COMPLEXES
- HALIDES
- METHYLLITHIUM