| abstract |
(I) providing a substrate having an amino or alcohol group, where the substrate is, for example, a polysaccharide; (ii) a lactone, ester, polyester, carbonate, polycarbonate, lactide, glycolide, anhydride, Providing a modifier that is an acid, a thioester or a carbamate; (iii) providing a catalyst that is, for example, an amino acid or an organic acid; and (iv) reacting the substrate with the modifier in the presence of the catalyst. A method for modifying amines and alcohols. [Selection] Figure 1 |