Results 21 to 30 of about 12,256 (221)
Synthesis and use of a stable aminal derived from TsDPEN in asymmetric organocatalysis [PDF]
, 2010 A stable aminal formed stereoselectively from (R,R)-N-tosyl-1,2-diphenyl-1,2-ethylenediamine (TsDPEN) is capable of asymmetric organocatalysis of Diels-Alder and alpha-amination reactions of ...
Clarkson, Guy J. +3 more
core +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
Enantioselective Organocatalytic Diels-Alder Trapping of Photochemically Generated Hydroxy-o-Quinodimethanes [PDF]
, 2016 The photoenolization/Diels-Alder strategy offers straightforward access to synthetically valuable benzannulated carbocyclic products. This historical light-triggered process has never before succumbed to efforts to develop an enantioselective catalytic ...
Cuadros, Sara +3 more
core +2 more sources
Amyloid peptide mixtures: self-assembly, hydrogelation, nematic ordering and catalysts in aldol reactions [PDF]
, 2020 Morphological, spectroscopic and scattering studies of the self-assembly and aggregation process of mixtures of [RF]4 and P[RF]4 peptides (where: R = arginine; F = phenylalanine; P = proline), in solution and as hydrogels, were performed to obtain ...
Aguilar, Andrea +6 more
core +1 more source
Nature 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 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
doaj +1 more source
Angewandte Chemie, EarlyView.This review highlights recent advances in integrating biocatalysis and chemocatalysis in continuous flow to create streamlined, sustainable processes. It examines chemo‐enzymatic cascades combining at least one enzymatic and one chemical step, discusses challenges such as enzyme immobilization, leaching, and reactor clogging, and presents solutions ...
Petros Siasiaridis +2 more
wiley +2 more sources
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
doaj +1 more source
Crystallographic investigation into the self-assembly, guest binding, and flexibility of urea functionalised metal-organic frameworks [PDF]
, 2017 Introduction of hydrogen bond functionality into metal-organic frameworks can enhance guest binding and activation, but a combination of linker flexibility and interligand hydrogen bonding often results in the generation of unwanted structures where the ...
Forgan, Ross S. +3 more
core +1 more source
Navigating Nitration Chemistry: A Practical Guide to Reagents, Mechanisms, and Selectivity
Angewandte Chemie, EarlyView.This review highlights key contributions of modern nitration chemistry, emphasizing sustainable mechanistic platforms and comparing the performance of both organic and inorganic reagents across aromatic, ipso‐, olefin, alkyne, and heteroatom nitration. It provides the community with a clearer, unified perspective on current advances and facilitates the
Harry Lecomte +2 more
wiley +2 more sources