Journal Article10.1016/J.SYNTHMET.2012.08.019
Chiral microspheres constructed by helical substituted polyacetylene: A new class of organocatalyst toward asymmetric catalysis
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TL;DR: In this paper, the first helical substituted polyacetylene and showing interesting asymmetric catalysis ability was reported, where two acetylene-based monomers, M 1L with l -proline pendant group and M A, underwent precipitation copolymerization in the presence of rhodium catalyst in a solvent mixture of butanone/n -heptane.
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About: This article is published in Synthetic Metals. The article was published on 01 Dec 2012. The article focuses on the topics: Enantioselective synthesis & Polyacetylene.
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Citations
New polyvinyl alcohol/carbon quantum dots (PVA/CQDs) nanocomposite films: Structural, optical and catalysis properties
TL;DR: In this paper, new PVA/CQDs nano-composite films were made-up via solution casting approach for the methylene blue dye removal from wastewater using X-ray diffraction (XRD), the Fourier Transformation Infrared Spectroscopy (FTIR) and the Uv-vis spectrophotometer.
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Nanospheres, Nanotubes, Toroids, and Gels with Controlled Macroscopic Chirality
TL;DR: Chiral nanospheres made of poly(aryl acetylene) that were previously assembled with metal(II) species can now be obtained withMetal(I) species, which complement those obtained from the same polymer with divalent cations.
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Helical Poly(phenylacetylene) Bearing Chiral and Achiral Imidazolidinone-Based Pendants that Catalyze Asymmetric Reactions due to Catalytically Active Achiral Pendants Assisted by Macromolecular Helicity
Leandro M. S. Takata,Leandro M. S. Takata,Hiroki Iida,Hiroki Iida,Kohei Shimomura,Koutarou Hayashi,Alcindo A. Dos Santos,Eiji Yashima +7 more
TL;DR: The obtained chiral/achiral copolymers exhibit an induced circular dichroism in the UV-vis regions of the copolymer backbones resulting from a preferred-handed helical conformation biased by the chiral imidazolidinone units incorporated in theCopolymers.
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Optically active helical polymers with pendent thiourea groups: Chiral organocatalyst for asymmetric michael addition reaction
TL;DR: In this article, a novel category of helical substituted polyacetylenes bearing pendant thiourea groups and showing remarkable asymmetric catalysis ability was reported, where the concaves along the helices provided specific domains where the substrates and catalytic groups were packed together, leading to a remarkable enhancement of product yield and enantioselectivity.
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References
A Green Chemistry Approach to Asymmetric Catalysis: Solvent-Free and Highly Concentrated Reactions
TL;DR: The potential advantages of asymmetric catalysis under solvent-free and highly concentrated reaction conditions have inspired this review and it is hoped that a comprehensive compilation of reports in this area will stimulate further investigations into solvent- free catalytic asymmetric reactions.
High-molecular-weight polyquinoxaline-based helically chiral phosphine (PQXphos) as chirality-switchable, reusable, and highly enantioselective monodentate ligand in catalytic asymmetric hydrosilylation of styrenes
TL;DR: A polyquinoxaline-based helical polymer ligand bearing both helical-sense-determining chiral side chains and coordinating diarylphosphino side chains exhibits solvent-dependent formation of P- or M-helical structures with high enantioselectivities.
241
Asymmetric catalysis with peptides
TL;DR: The article highlights features that render peptidic organocatalysts unique and attractive for future applications.
208
Folded biomimetic oligomers for enantioselective catalysis
TL;DR: This report describes a library of synthetic helical “peptoid” oligomers that enable enantioselective transformations at an embedded achiral catalytic center, as illustrated by the oxidative kinetic resolution of 1-phenylethanol.
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Tuning the extent of chiral amplification by temperature in a dynamic supramolecular polymer
Maarten M. J. Smulders,Ivo A. W. Filot,Janus M. A. Leenders,Paul van der Schoot,Anja R. A. Palmans,Albertus P. H. J. Schenning,E. W. Meijer +6 more
TL;DR: A general "master curve" independent of concentration is generated to describe the temperature-dependent majority-rules principle and unprecedented expressions of amplification of chirality observed in supramolecular polymers.