Abstract
Asymmetric anionic homopolymerizations of achiral N-substituted citraconimide (RCI, N-substituent: R=n-propyl(n-PrCI), n-butyl(n-BuCI), cyclohexyl(CHCI), phenyl(PhCI), benzyl(BzCI), 1-naphthyl (NCI), 4-(ethoxycarbonyl)phenyl(ECPCI), and α-methylbenzyl (MBzCI)) were performed with the chiral ligand-organometal complex in toluene or tetrahydrofuran(THF). The obtained oligo(RCI)s had very low molecular weights and relatively narrow polydispersity. The oligomers showed specific rotation ([α]43525+79.2° to −40.3°). Asymmetric induction took place on the polymer main chain and was confirmed by circular dichroism(CD) and GPC analysis using UV and polarimetric detectors.
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Oishi, T., Onimura, K., Sumida, W. et al. Asymmetric Anionic Oligomerization of N-Substituted Citraconimide with the Chiral Ligand-Organometal Complex. Polym J 32, 543–551 (2000). https://doi.org/10.1295/polymj.32.543
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DOI: https://doi.org/10.1295/polymj.32.543