Results 21 to 30 of about 395,120 (176)
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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Chiral Brønsted Acids for Asymmetric Organocatalysis
, 2009 Chiral Brønsted acid catalysis is an emerging area of organocatalysis. Since the pioneering studies of the groups of Akiyama and Terada in 2004 on the use of chiral BINOL phosphates as powerful Brønsted acid catalysts in asymmetric Mannich-type reactions, numerous catalytic asymmetric transformations involving imine activation have been realized by ...
Kampen, D., Reisinger, C., List, B.
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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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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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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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Asymmetric organocatalysis at the service of medicinal chemistry. [PDF]
ISRN Org Chem, 2014 The application of the most representative and up-to-date examples of homogeneous asymmetric organocatalysis to the synthesis of molecules of interest in medicinal chemistry is reported. The use of different types of organocatalysts operative via noncovalent and covalent interactions is critically reviewed and the possibility of running some of these ...
Ricci A.
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ScienceOpen Research, 2015 Organocatalysis, that is the use of small organic molecules to catalyse organic transformations, has been included among the most successful concepts in asymmetric catalysis and it has been used for the enantioselective construction of C-C, C-N, C-O, C-S,
Chiara Palumbo
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Educación Química, 2018 Solvent-free asymmetric organocatalyzed reactions: a strategy towards a greener organocatalysis According with the principles of “green” chemistry, asymmetric organocatalysis aims to become a sustainable strategy to catalyze a wide range of chemical ...
José G. Hernández, Eusebio Juaristi
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