Helicity Induction on a Poly (phenylacetylene) Bearing Carboxy Groups at the Meta-Position
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چکیده
منابع مشابه
Macromolecular helicity inversion of an optically active helical poly(phenylacetylene) by chemical modification of the side groups.
An optically active helical poly(phenylacetylene) was synthesized by the copolymerization of phenylacetylenes bearing optically active hydroxy or ester groups obtained by the kinetic resolution of a racemic phenylacetylene with lipase; the helix-sense was inverted from one helix to another by the further chemical modification of the hydroxy groups with achiral bulky isocyanates or an acid chlor...
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A phenylacetylene containing the l-valine ethyl ester pendant (PAA-Val) was synthesized and polymerized by an organorhodium catalyst (Rh(nbd)BPh₄) to produce the corresponding one-handed helical cis-poly(phenylacetylene) (PPAA-Val). PPAA-Val showed a unique temperature-triggered switchable helix-sense in chloroform, while it was not observed in highly polar solvents, such as N,N'-dimethylformam...
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ژورنال
عنوان ژورنال: KOBUNSHI RONBUNSHU
سال: 2006
ISSN: 0386-2186,1881-5685
DOI: 10.1295/koron.63.325