Amine-based ionic liquids (R3N+PPh2) as a reusable reaction medium and Pd(II) ligand in Heck reactions of aryl halides with styrene and n-butyl acrylate

• Direct phosphorylation of trialkylamines as an efficient reducing agent and ligand.
• A suitable IL for the preparation of Pd(0) nanoparticles.
• A suitable catalyst in Mizoroki–Heck reactions.
• The recoverable and reusable catalyst in several runs.

Amine-based ionic liquids (R3N+PPh2) are reported as an effective reusable medium, suitable Pd(II) ligand and also reducing agent for the Heck coupling reaction of aryl iodides and bromides with styrene and n-butyl acrylate. The ionic liquid, still containing its corresponding Pd(0) complex, was easily recovered and reused in several runs without losing its efficiency.

Figure optionsDownload high-quality image (69 K)Download as PowerPoint slide