FUNCTIONALIZATION OF POLYSTYRENE RESINS WITH CHIRAL FRAGMENTS DERIVEDFROM TARTARIC ACID

Several methods have been assayed for the anchoring of chiral fragment s derived from tartaric acid to polystyrene/divinylbenzene resins. In order to further modify the initially anchored chiral groups, binding to the polymer backbone through an ether linkage is preferred to the u sual acetalic linkage. Resins containing different chiral groups have been prepared with degrees of functionalization ranging from 0.5 to 0. 8 meq/g (DF = 0.05-0.11). The use of the O-monobenzyl ether of dimethy l tartrate gives the best results for the initial anchoring reaction.