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Anionic polymerization of optically active oxiranes
Author(s) -
Haubenstock Howard,
Yu WeiHong,
Odian George
Publication year - 1995
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.1995.030161110
Subject(s) - tacticity , polymerization , polymer , optically active , diastereomer , polymer chemistry , materials science , anionic addition polymerization , proton nmr , proton , nmr spectra database , spectral line , chemistry , stereochemistry , organic chemistry , physics , astronomy , quantum mechanics
The anionic bulk polymerization of optically active (2 R , 3 S )‐3,4‐epoxy‐1,2‐ O ‐isopropylidenebutane‐1,2‐diol ( 1 ) and its (2 S , 3 S ) diastereomer 2 was studied. Molecular weights and optical activity measurements as well as carbon and proton NMR spectra are reported. The polymers show solvent dependent inversion of the sign of optical rotation. The NMR spectra are consistent with isotactic polymer chains.