| Abstract: | Poly[L (and D , L )-N-(methoxycarbonylmethyl)iminopropylene] ( 5 ) were synthesized by cationic polymerization of methyl 2-(2-methyl-1-aziridinyl)acetate ( 4 ) in the presence of dimethyl sulfate as initiator. The stereoregularity of the polymer obtained from the L -aziridine 4 was determined by 13C NMR study of the L - and D ,L -polyesters 5 . It could be shown that the opening of the aziridine ring proceeds mainly at the unsubstituted methylene carbon atom, retaining the configuration of the asymmetric carbon to at least 85%. |
