FUNCTIONALIZATION OF POLYSTYRENE RESINS WITH CHIRAL FRAGMENTS DERIVED FROM TARTARIC ACID

Several methods have been assayed for the anchoring of chiral fragments 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 usual 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 dimethyl tartrate gives the best results for the initial anchoring reaction.