Results 141 to 150 of about 10,956 (235)
Amines vs. N-Oxides as Organocatalysts for Acylation, Sulfonylation and Silylation of Alcohols: 1-Methylimidazole N-Oxide as an Efficient Catalyst for Silylation of Tertiary Alcohols [PDF]
, 2015 Murray, JI, Spivey, AC
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Recent Advances in the α‐Hydrazination (α‐Amination) of Carbonyl Compounds
European Journal of Organic Chemistry, Volume 28, Issue 17, May 21, 2025.In recent years, notable progress has been achieved in the α‐hydrazination (α‐amination) of carbonyl compounds, especially in the direct asymmetric electrophilic α‐hydrazination with dialkyl azodicarboxylates. This review summarizes all the methods that appeared over the past decade, categorized based on the type of the reactive chiral intermediate ...
Dina Scarpi +2 more
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Coexistence of the Perfluorinated Cp* Anion With Oxidizing and Electrophilic Cations
Chemistry – A European Journal, Volume 31, Issue 28, May 19, 2025.The perfluorinated Cp* [C5(CF3)5]− is known for its unique ligand/counteranion switchability and is now introduced as a weakly coordinating anion (WCA). Its extraordinarily low nucleophilicity, combined with its pronounced oxidative stability, allows for the coexistence with reactive cations and the formation of unprecedented salts.
Robin Sievers +4 more
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Chemistry – A European Journal, Volume 31, Issue 27, May 14, 2025.High regioselection in the synthesis of brominated and amino‐substituted 1,3‐diazaazulenes enables regiocontrolled access to a series of differently substituted 4‐, 6‐, and 8‐amino‐1,3‐diazaazulenes with soft‐tunable optical properties. The tetra‐aminosubstituted diazaazulenes are not entirely planar, as observed by crystallographic and computational ...
Teppo O. Leino +4 more
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New advances in asymmetric organocatalysis
Beilstein Journal of Organic Chemistry, 2022 Radovan Šebesta
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Angewandte Chemie International Edition, Volume 64, Issue 20, May 12, 2025.This paper describes a mild, enantioselective method for the arylation and alkenylation of 2‐aminobiaryl compounds to produce highly valuable, enantioenriched anilines exhibiting axial chirality. The kinetic resolution process is catalyzed by Pd(II) in combination with an isobutyryl‐protected isoleucine ligand (iBoc‐Ile‐OH), using atmospheric air as ...
Laura Goicoechea +3 more
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Mechanistic insights into organocatalysis
, 2013 With a resurgence of interest at the turn of the millennium, organocatalysis has become an established field in chemical research. Proline, in particular, has played a central role in the profusion of research. As the archetypal organocatalyst, proline mediated transformations have acted as a point of reference against which the performance of new ...
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Halogen Bond‐Driven Ligand Displacement: Co‐Crystal Lattice Versus Coordination Bonds
Chemistry – A European Journal, Volume 31, Issue 26, May 8, 2025.Strong halogen bond donor (1,4‐diiodotetrafluorobenzene) can induce the amine ligand displacement in Jahn–Teller affected Cu(acac)2(amine) and in trans influenced VO(acac)2(amine) complexes, resulting the formation of respective co‐crystals: M(acac)2·1,4‐DITFB and (amine)·1,4‐DITFB.
Yury V. Torubaev +3 more
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Advanced Synthesis &Catalysis, Volume 367, Issue 9, May 6, 2025.Abstract Flavin co‐factors and other flavin derivatives are traditionally associated with one‐ or two‐electron redox reactions. Flavins also form covalent intermediates with a variety of substrates. While extensive attention has focused on reactions at the C(4a) position of the flavin ring, recent interest has shifted toward the dynamic potential of ...
Tetiana Pavlovska +3 more
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