Dichloropalladium complexes ligated by 4,5-bis(arylimino)pyrenylidenes: Synthesis, characterization, and catalytic behavior towards Heck-reaction

• Newly synthesized 1,2-bis(arylimino)acenaphthylenylpalladium chlorides.
• Characterization including single crystal X-ray molecular structures.
• The Heck reaction and high activity.
• Highly thermo-stable palladium complex catalyst.

A series of 4,5-bis(arylimino)pyrenylidenylpalladium(II) chloride complexes (C1–C4) were synthesized and characterized by FT-IR and NMR spectroscopy, elemental analysis as well as by single crystal X-ray diffraction for the representative complexes C1 and C3, which revealed a square planar geometry at the palladium center. All palladium complexes exhibited high activity for the Heck cross-coupling reaction, which were effective when conducted in various solvents. Furthermore, the in-situ mixture of palladium dichloride and the ligand (L1) provided an effective catalytic system for the Heck-reaction.

The 4,5-bis(arylimino)pyrenylidenylpalladium(II) chlorides were synthesized and fully characterized;, meanwhile they exhibited high activity for the Heck cross-coupling reaction as well as the highly thermal stability.Figure optionsDownload as PowerPoint slide