摘要:
This paper reports the synthesis of a polymerizable dppe-derivative with eight pendent styrenyl units linked to the dppe core through four tyrosine residues. This diphosphine ligand was utilized in the synthesis of a series Of P2PdX2 complexes (X-2 = (R)BINOL, (S)-BINOL, Cl-2 and pi-1,3-Ph-2-allyl(+)). The compounds were used as comonomers for the synthesis of porous organic polymers (poly EDMA). Molecular imprinting effects on X-2-ligand removal were investigated. Overall, the presence of a cavity of significant size was found to be beneficial to the rate of the allylic alkylation reaction, however, chiral BINOL shaped cavities did not influence the enantio-selectivity of the reaction. (C) 2004 Elsevier B.V. All rights reserved.