Results 11 to 20 of about 12,117 (202)

Phosphine Organocatalysis [PDF]

Chemical Reviews, 2018
The hallmark of nucleophilic phosphine catalysis is the initial nucleophilic addition of a phosphine to an electrophilic starting material, producing a reactive zwitterionic intermediate, generally under mild conditions. In this Review, we classify nucleophilic phosphine catalysis reactions in terms of their electrophilic components. In the majority of
Hongchao Guo, Yi Chiao Fan, Zhanhu Sun, Yang Wu, Ohyun Kwon   +4 more
openaire   +4 more sources

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

Molecules, 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
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Organocatalysis with carbon nitrides

Science and Technology of Advanced Materials, 2023
Carbon nitrides, a distinguished class of metal-free catalytic materials, have presented a good potential for chemical transformations and are expected to become prominent materials for organocatalysis.
Sujanya Maria Ruban, Kavitha Ramadass, Gurwinder Singh, Siddulu Naidu Talapaneni, Gunda Kamalakar, Chandrakanth Rajanna Gadipelly, Lakshmi Kantham Mannepalli, Yoshihiro Sugi, Ajayan Vinu   +8 more
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Reacciones asimétricas organocatalizadas en ausencia de disolvente: una estrategia para hacer más “verde” la organocatálisis

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
doaj   +1 more source

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, Lassaletta, José M., Matador Martínez, Esteban, Monge Fernández, David, Retamosa Hernández, María Gracia   +4 more
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Whole Cells as Biocatalysts in Organic Transformations

Molecules, 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, Liliana Becerra-Figueroa, José Hernández-Arias, Diego Gamba-Sánchez   +3 more
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N‐heterocyclic carbene catalyzed photoenolization/Diels–Alder reaction of acid fluorides [PDF]

, 2019
The combination of light activation and N‐heterocyclic carbene (NHC) organocatalysis has enabled the use of acid fluorides as substrates in a UVA‐light‐mediated photochemical transformation previously observed only with aromatic aldehydes and ketones ...
Agrawal, Arush, Golz, Paul, Götze, Jan P., Hopkinson, Matthew N., Mavroskoufis, Andreas, Rajes, Keerthana, Ruß, Vincent   +6 more
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Asymmetric organocatalysis of the addition of acetone to 2-nitrostyrene using N-diphenylphosphinyl-1,2-diphenylethane-1,2-diamine (PODPEN) [PDF]

, 2010
The highly enantioselective addition of acetone to 2-nitrostyrene, using N–diphenylphosphinyl-trans-1,2-diphenylethane-1,2-diamine (PODPEN) as catalyst, is ...
A. Simon Partridge, Bernardi, Burns, Charles V. Manville, Chaun, Connon, Dahlin, Daugidas T. Racys, David J. Morris, Denmark, Eder, Fletcher, García-García, Gary Woodward, Gordon Docherty, Hayashi, Hine, Hine, Huang, Ju, Kohmura, Laars, Lattanzi, Li, Liu, Liu, Martin Wills, Massi, Mei, Melchiorre, Ni, Ni, Pansare, Rishel, Seayad, Sulzer-Mosse, Suzuki, Tan, Tan, Tan, Tsandi, Tsogeova, Vijaikumar, Wang, Wang, Wang, Watson, Xu, Xu, Xu, Xu, Xue, Yu, Zhang   +53 more
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Direct Transamidation Reactions: Mechanism and Recent Advances

Molecules, 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, Alejandra Mateus-Gómez, Diego Gamba-Sánchez   +2 more
doaj   +1 more source

Organocatalytic synthesis of axially chiral atropisomers [PDF]

, 2017
This review summarises the recent progress made in the organocatalytic synthesis of atropisomeric compounds. Methodologies based on dynamic kinetic resolution and direct access to BINOL-like biaryls are described.
Renzi, P.
core   +1 more source