Results 21 to 30 of about 6,809 (215)

Molecular Understanding and Practical In Silico Catalyst Design in Computational Organocatalysis and Phase Transfer Catalysis—Challenges and Opportunities

open access: yesMolecules, 2023
Through the lens of organocatalysis and phase transfer catalysis, we will examine the key components to calculate or predict catalysis-performance metrics, such as turnover frequency and measurement of stereoselectivity, via computational chemistry.
Choon Wee Kee
doaj   +1 more source

Reacciones asimétricas organocatalizadas en ausencia de disolvente: una estrategia para hacer más “verde” la organocatálisis

open access: yesEducación 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
doaj   +1 more source

Switchable organocatalysis from N-heterocyclic carbene-carbodiimide adducts with tunable release temperature [PDF]

open access: yes, 2023
N-Heterocyclic carbenes (NHCs) are powerful organocatalysts, but practical applications often require in situ generation from stable precursors that “mask” the NHC reactivity via reversible binding.
Red, Smith-Sweetser   +4 more
core   +1 more source

Whole Cells as Biocatalysts in Organic Transformations

open access: yesMolecules, 2018
Currently, the power and usefulness of biocatalysis in organic synthesis is undeniable, mainly due to the very high enantiomeric excess reached using enzymes, in an attempt to emulate natural processes.
Fabián Garzón-Posse   +3 more
doaj   +1 more source

Direct Transamidation Reactions: Mechanism and Recent Advances

open access: yesMolecules, 2018
Amides are undeniably some of the most important compounds in Nature and the chemical industry, being present in biomolecules, materials, pharmaceuticals and many other substances.
Paola Acosta-Guzmán   +2 more
doaj   +1 more source

Peptide catalyzed conjugate addition reactions of aldehydes to nitroolefins [PDF]

open access: yes, 2013
In this thesis mechanistic investigations into the peptide catalyzed conjugate addition reaction between aldehydes and nitroolefins are described.
Duschmalé, Jörg
core   +1 more source

Organocatalysis in the Chemical Transformations [PDF]

open access: yes, 2023
Organocatalysis has been a breakthrough in chemical transformations becoming viable the conversion of challenging reactions through the sustainable use of small organic molecules as catalysts [...
Adriana Maria da Silva
core   +1 more source

Asymmetric Organocatalysis with Chiral Covalent Organic Frameworks

open access: yesOrganic 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
doaj   +1 more source

Chiral aldehyde-nickel dual catalysis enables asymmetric α−propargylation of amino acids and stereodivergent synthesis of NP25302

open access: yesNature Communications, 2022
The combination of transition metal catalysis and organocatalysis can afford both good reactivity and selectivity. Here, the authors present an α − propargylation of N-unprotected amino acid esters with propargylic alcohol derivatives via dual nickel and
Fang Zhu   +5 more
doaj   +1 more source

Asymmetric organocatalysis involving double activation

open access: yesTetrahedron 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
doaj   +1 more source

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