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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Bulletin des Société...arrow_drop_down
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Bulletin des Sociétés Chimiques Belges
Article . 1986 . Peer-reviewed
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Utilisation de la Synthèse Atrolactique Pour L'Évaluation de L'Efficacité D'Inducteurs de Synthèse Asymétrique

Authors: Ben Hassine, Béchir; Gorsane, Mohamed; Evrard, France; Pecher, Jacques; Martin, Ricardo; Castelet, Daniel;

Utilisation de la Synthèse Atrolactique Pour L'Évaluation de L'Efficacité D'Inducteurs de Synthèse Asymétrique

Abstract

AbstractAtrolactic syntheses have been carried out to evaluate the potentiality, in asymmetric syntheses, of chiral inducers. The (dl)‐hydroxyhelicenes 1, 2, the (dl) sec. alcohols 3–12 and the (dl) phenolic binaphtyl compound 15 have been used as inducers. The d.e. are collected in table I (6–100%). The atrolactic asymmetric synthesis has also been carried out using three optically active inducers, namely: (‐)‐quinine 13, (‐)‐10, 11‐dihydroquinine 14, and R(‐)‐2, 2, 2‐trifluoro‐1‐(9‐anthryl) ethanol 6. Diastereomeric and enantiomeric excesses equal or greater than 88% have been obtained in six cases out of sixteen: (dl)‐2‐hydroxyheptahelicene 1 (d.e=100%±2), (1‐naphtyl)‐(9‐anthryl) methanol 3 (d.e=90%); 2, 2, 2‐trichloro‐1‐(9‐anthryl) ethanol 7 (d.e=100%±2), 2, 2, 2‐tribromo‐1‐(9‐anthryl) ethanol 8 (d.e=100%±2), (‐)‐quinine 13 (e.e=95.5%), and (‐)‐2, 2, 2‐trifluoro‐1‐(9‐anthryl) ethanol 6 (e.e=88%).

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Belgium
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Keywords

Chimie

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
47
Top 10%
Top 10%
Average
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