Dendrimers Functionalized with Palladium Complexes of N-, N,N-, and N,N,N-Ligands

Molecules

Quentin Vanbellingen¹  Sonia Mallet-Ladeira¹  Anne-Marie Caminade¹  Régis Laurent¹  Anaïs Coinaud¹  Paul Servin¹ 

[1] Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, CEDEX 4, 31077 Toulouse, France;

关键词: dendrimer;    ligands;    imine;    palladium;    complexes;    phenol;   

DOI  :  10.3390/molecules26082333

来源: DOAJ

【 摘 要 】

Pyridine, pyridine imine, and bipyridine imine ligands functionalized by a phenol have been synthesized and characterized, in many cases by X-ray diffraction. Several of these N-, N,N-, and N,N,N,-ligands have been grafted onto the surface of phosphorhydrazone dendrimers, from generation 1 to generation 3. The complexation ability of these monomers and dendrimers towards palladium(II) has been assayed. The corresponding complexes have been either isolated or prepared in situ. In both cases, the monomeric and dendritic complexes have been tested as catalysts in Heck couplings and in Sonogashira couplings. In some cases, a positive dendritic effect has been observed, that is, an increase of the catalytic efficiency proportional to the dendrimer generation.

【 授权许可】

Unknown