Optically Active Poly- and Oligo(biphenyl carbonate)s as Stable Helical Molecules.

Accession number;99A0156463
Title;Optically Active Poly- and Oligo(biphenyl carbonate)s as Stable Helical Molecules.
Author; MURAKAWA K (Osaka Prefecture Univ., Osaka) FURUSHO Y (Osaka Prefecture Univ., Osaka) TAKATA T (Osaka Prefecture Univ., Osaka)
Journal Title;Chem Lett
Journal Code:S0742A
ISSN:0366-7022
VOL.;NO.1;PAGE.93-94(1999)
Figure&Table&Reference;FIG.2, REF.16
Pub. Country;Japan
Language;English
Abstract;Low molecular weight polycarbonate ((R)-2) derived from polycondensation of (R)-4,4',6,6'-tetramethyl-2,2'-dihydroxybiphenyl ((R)-3) showed large Cotton effect at 210 nm compared with its unit model. CD spectra of model oligomers of (R)-2 (2-8mers) obtained by stepwise synthesis and their structure simulation suggested that (R)-2 and higher oligomers can hold a stable left-handed helix. (author abst.)
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