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A novel, hydrophilic and recyclable methoxypolyethylene glycol (PEG)-modulated s-triazine-based multifunctional Schiff base/N,P-ligand L9 was prepared and used in Pd-catalyzed Heck-type carbonylative coupling reactions, affording diverse chalcone derivatives and 1,4-dicarbonyl esters in good yields. [ABSTRACT FROM AUTHOR]

It was found that catalytic allylation of various cyanoacetamides proceeded smoothly and efficiently in environmentally benign PEG-400 (PEG=poly(ethylene glycol)) in the presence of Pd(OAc)2 and novel triazine-derived multifunctional ligand L1, with which this reaction could afford the structurally diverse mono- and double allylated adducts in good to excellent yields as well as good chemo- and regioselectivity. In addition, this Pd/ L1/PEG-400 catalyst system could be recycled for five runs with good yield and high efficiency, which supported the notion that the triazine-containing Schiff base based phosphine ligand could be a multifunctional and reusable ligand encapsulated in PEG-400. [ABSTRACT FROM AUTHOR]

The Front Cover shows the powerful potential of palladium catalysis in organic synthesis. A new triazine‐modified phosphine ligand for palladium catalyzed allylic alkylation of cyanoacetamides with simple allylic acetate was developed by Z. W. Gao, L. W. Xu and coworkers.In their Full Paper, P.‐S. Gao et al. demonstrate that the highly efficient and controllable mono‐allylation and double‐allylation of cyanoacetamides can be achieved in environmentally benign and recyclable PEG‐400. More information can be found in the Full Paper by P.‐S. Gao et al. on page 3466 in Issue 22, 2016 (DOI: 10.1002/cctc.201601021). [ABSTRACT FROM AUTHOR]