N-Heterocyclic carbene (NHC) palladium(II) complexes bearing chiral oxazoline ligands and their catalytic activities in allylic alkylation reactions

Authors : Serpil DENİZALTI, Hayati TÜRKMEN, Bekir ÇETİNKAYA

Pages : 679-685

Doi:10.3906/kim-1312-60

View : 26 | Download : 10

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :NHC--Pdinsert ignore into journalissuearticles values(II); complexes bearing a chiral oxazoline ligand insert ignore into journalissuearticles values(IIIa--f); were synthesized by cleavage of dimeric palladium complexes with the oxazoline ligand. They were fully characterized by 1H and 13C NMR and elemental analyses. The catalytic activity of the complexes insert ignore into journalissuearticles values(IIIa--f); in allylic alkylation reactions was evaluated. The complex IIIa was found to be the most active catalyst. Very low ee values indicate that the oxazoline is dissociated from the active catalytic species.
Keywords : N heterocyclic carbene, oxazoline, palladium complexes, allylic alkylation