Results 61 to 70 of about 16,879 (311)
Asymmetric Organocatalysis in Deep Eutectic Solvents
Annalen der Pharmacie, 2021 The recent advances in asymmetric organocatalysis using eutectic mixtures as a reaction medium are revised in this mini-review. In addition, the first enantioselective transformations using chiral eutectic solvents, which play the role of a green medium ...
D. Alonso +5 more
semanticscholar +1 more source
Privileged Chiral Photocatalysts
Angewandte Chemie, EarlyView.Privileged chiral catalysts have transformed asymmetric synthesis, conferring generality to processes that are routinely leveraged in the construction of societally important functional small molecules. This mini‐review is intended to survey the conception and evolution of privileged chiral photocatalyst scaffolds that enable simultaneous orchestration
Emanuel Studer +3 more
wiley +2 more sources
Nature Communications, 2022 Nitriles have proven to be useful functional groups in pharmaceuticals and polymers, both as active moieties themselves or as easy precursors to further transformations, but synthesis of benzonitriles with axial chirality has often been difficult.
Ya Lv +5 more
doaj +1 more source
Organocatalysis in total synthesis [PDF]
, 2015 Peer ...
Herrera, Raquel P. +1 more
core +2 more sources
Organocatalytic C─O Bond Cleavage and Asymmetric Transformations via [1,3]‐Sigmatropic Rearrangement
Advanced Science, EarlyView.A direct asymmetric strategy for fulfilling the functional group transfer by aryl ether cleavage and migration is developed, representing the first Brønsted base‐catalyzed asymmetric [1,3]‐sigmatropic rearrangement reaction. The resulting chiral benzofuran products generated through this strategy exhibit significant 3D‐dimensionality and demonstrate ...
Lei Peng +7 more
wiley +1 more source
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
doaj +1 more source
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
doaj +1 more source
Organocatalytic Lewis base functionalisation of carboxylic acids, esters and anhydrides via C1-ammonium or azolium enolates [PDF]
, 2014 This tutorial review highlights the organocatalytic Lewis base functionalisation of carboxylic acids, esters and anhydrides via C1-ammonium/azolium enolates.
Morrill, Louis C., Smith, Andrew D.
core +1 more source
Catalysts, 2021 Chiral bifunctional dual H-bond donor catalysts have become one of the pillars of organocatalysis. They include squaramide, thiosquaramide, thiourea, urea, and even selenourea-based catalysts combined with chiral amines, cinchona alkaloids, sulfides ...
A. Phillips, M. Prechtl, A. Pombeiro
semanticscholar +1 more source
Advanced Science, EarlyView.We developed cyclic (diacyloxyiodo)arenes to overcome the reactivity/selectivity paradox in iodine chemistry. This new platform enables simple, one‐pot synthesis of diverse hypervalent iodine(III) reagents. The method is sustainable, catalytic, works for asymmetric reactions, and is biocompatible (e.g., modifying peptides).
Shengyu Zhong +4 more
wiley +1 more source