Results 11 to 20 of about 7,117 (203)
Asymmetric organocatalysis involving double activation
Tetrahedron Chem, 2022 Asymmetric organocatalysis contributed tremendously to the field of organic synthesis since year 2000. Considering the diversity of organocatalysts and their activation modes, chemists developed the double activation strategy, in which two distinct ...
Zhi Chen +3 more
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Do We Need Asymmetric Organocatalysis?
CHIMIA, 2007 Asymmetric organocatalysis is a 'fast lane' of the chemical highway: the progress in the last decade is simply spectacular. This introductory article summarizes basic principles, historical background, and discusses basic catalyst classes and ...
Peter I. Dalko
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Catalyst design within asymmetric organocatalysis
WIREs Computational Molecular Science, 2022 AbstractThe field of organocatalysis, more specifically asymmetric organocatalysis, is continuously expanding having grown significantly over the recent years. However, despite this exponential expansion, the ability to determine with any degree of certainty the reaction mechanisms of these types of reactions fails to keep within pace.
Iñigo Iribarren +2 more
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Electrostatic Interactions in Asymmetric Organocatalysis. [PDF]
Acc Chem Res, 2023 Electrostatic interactions are ubiquitous in catalytic systems and are often decisive in determining reactivity and stereoselectivity. However, a lack of understanding of the fundamental underlying principles has long stymied our ability to fully harness the power of these interactions.
Maji R, Mallojjala SC, Wheeler SE.
europepmc +3 more sources
Recent Developments and Trends in Asymmetric Organocatalysis. [PDF]
European J Org Chem, 2023 AbstractAsymmetric organocatalysis has experienced a long and spectacular way since the early reports over a century ago by von Liebig, Knoevenagel and Bredig, showing that small (chiral) organic molecules can catalyze (asymmetric) reactions. This was followed by impressive first highly enantioselective reports in the second half of the last century ...
García Mancheño O, Waser M.
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Cross-trienamines in asymmetric organocatalysis. [PDF]
J Am Chem Soc, 2012 Cross-conjugated trienamines are introduced as a new concept in asymmetric organocatalysis. These intermediates are applied in highly enantioselective Diels-Alder and addition reactions, providing functionalized bicyclo[2.2.2]octane compounds and γ'-addition products, respectively.
Halskov KS +5 more
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Recent Advances in the Enantioselective Radical Reactions
Molecules, 2023 The review covers research published since 2017 and is focused on enantioselective synthesis using radical reactions. It describes recent approaches to the asymmetric synthesis of chiral molecules based on the application of the metal catalysis, dual ...
Tomasz Bauer +2 more
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Asymmetric Organocatalysis with Chiral Covalent Organic Frameworks
Organic Materials, 2021 Inspired by Mother Nature, the use of chiral covalent organic frameworks as heterogeneous asymmetric organocatalysts has arisen over the last decade as a new method in enantioselective synthesis.
Song-Chen Yu, Liang Cheng, Li Liu
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Molecules, 2023 In 1971, chemists from Hoffmann-La Roche and Schering AG independently discovered a new asymmetric intramolecular aldol reaction catalyzed by the natural amino acid proline, a transformation now known as the Hajos–Parrish–Eder–Sauer–Wiechert reaction ...
Arianna Quintavalla +2 more
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Hydrazones as Singular Reagents in Asymmetric Organocatalysis [PDF]
, 2016 This Minireview summarizes strategies and developments regarding the use of hydrazones as reagents in asymmetric organocatalysis, their distinct roles in nucleophile–electrophile, cycloaddition, and cyclization reactions.
Fernández Fernández, Rosario Fátima +4 more
core +3 more sources