Improved Sonogashira CC coupling through clay supported palladium complexes with tridentate pincer bis-carbene ligands

✍ Scribed by Elena Mas-Marzá; Anna M. Segarra; Carmen Claver; Eduardo Peris; Elena Fernandez

• Book ID: 104254273
• Publisher: Elsevier Science
• Year: 2003
• Tongue: French
• Weight: 117 KB
• Volume: 44
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(03)01686-1

✦ Synopsis

Highly active recyclable Pd catalysts modified with a rigid C,N,C-tridentate pincer carbene ligand were successfully applied to the coupling of aryl halides with terminal acetylenes. The immobilization of Pd(II) complexes onto clays has beneficial effects on the recyclability of the catalytic activity over consecutive runs and also on the catalyst's stability, preventing it from Pd(0) formation.