Dihalogen-bridged NHC–palladium(i) dimers: synthesis, characterisation and applications in cross-coupling reactions†
Abstract
A di-iodo-bridged PdI dimer bearing an N-heterocyclic carbene ligand was made accessible via the reduction of [(IPr)PdI2]2 in basic methanol solution. The structural features of [(IPr)PdI]2 were explored by single-crystal X-ray analysis. It was found to be a convenient one-component precatalyst with high activity in Suzuki–Miyaura, Buchwald–Hartwig, and Sonogashira reactions.