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.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (69 K)Download as PowerPoint slide