SYNTHESIS, COORDINATION CHEMISTRY AND POLYMERFIXATION OF THE TRIPOD-LIGAND HOC6H4CH2C(CH2PPH2)(3)

Starting from 4-methoxybenzylmalonic ester MeOC6H4CH2CH(COOEt)(2), the synthesis of the tripod-ligand HOC6H4CH2C(CH2PPh2)(3), 12, functional ized with a phenolic group at its backbone, is achieved in a few steps . Ether derivatives of 12 show the normal coordination behavior of RC( CH2PPh2)(3). Thus MeOC6H4CH2C(CH2PPh2)(3) forms the complexes [7.Fe(NC Me)(3)] (BF4)(2) (8) and 7.Mo(CO)(3) (9). The phenolate derived from 1 2 by deprotonation reacts with the CH2Cl groups of Merrifield resin to form covalently polymer fixed 12 with high efficiency. The polymer bo und tripod ligands undergo tripod typical coordination reactions. In a ddition to the usual spectroscopic and analytical techniques, X-ray an alyses of derivatives of 12 as well as of 8 and 9 are used to identify the products. (C) 1998 Elsevier Science S.A. All rights reserved.