Results 61 to 70 of about 2,056,277 (235)
π‐Electron Donation at the Sulfoximidoyl Nitrogen Atom
Angewandte Chemie International Edition, Accepted Article.Knowledge of the physicochemical properties and the reactivity of functional groups is invaluable in organic chemistry. While substantial understanding of properties/reactivities exists for standard functional groups, moieties which have entered the chemist’s toolbox more recently are often not as well characterized.
Benjamin J. Statham +2 more
wiley +1 more source
Advances in Metal‐Free Transamidation: A Sustainable Approach to Amide Bond Formation
Chemistry – An Asian Journal, EarlyView.This review highlights the recent developments of transamidation reactions under metal‐free reaction conditions. Various amines including weak nucleophilic amines such as aromatic amines have been used to achieve the transamidation reactions under mild and relatively green reaction conditions. Abstract The amide functionalities are a crucial functional
Niharan Sivaraj +2 more
wiley +1 more source
Orientational orders in binary mixtures of hard HGO molecules [PDF]
, 2003 studied liquid crystal phases of binary mixtures of non-spherical molecules. The components of the mixtures are two kinds of hard Gaussian overlap (HGO) molecules, one kind of molecules with a small molecular-elongation parameter (small HGO molecules) cannot form stable liquid crystal phase in bulk, and other with a large elongation parameter (large ...
arxiv +1 more source
Relationships between charge density response functions, exchange holes and localized orbitals [PDF]
, 2015 The charge density response function and the exchange hole are closely related to each other via the fundamental fluctuation-dissipation theorem of physics.
Mussard, Bastien, Ángyán, János G.
core +1 more source
Chemistry – An Asian Journal, EarlyView.A new visible light‐induced method is reported for the C3‐alkylation of imidazo[1,2‐a]pyrimidines and ‐pyridines with aryldiazoacetates. This protocol can be performed in open air and serves as a convenient entry to several known and new molecules. A formal synthesis of zolpidem is achieved by changing the alkylating agent to an appropriate hypervalent
Ronei M. S. Souza +6 more
wiley +1 more source
Construction of spirolactones with concomitant formation of the fused quaternary centre - application to the synthesis of natural products [PDF]
, 2011 International audiencePolycyclic structures fused at a central carbon are of great interest due to their appealing conformational features and their structural implications in biological systems.
Bartoli, Alexandra +4 more
core +2 more sources
Integrating Enzymes with Photoredox Catalysis for Conversion of Nitriles into Fluorinated Products
ChemCatChem, Accepted Article.Fluorinated molecules are widely used as pharmaceuticals, agrochemicals and as various functional materials. Traditional synthetic methods for introducing fluorine substituents into organic molecules involve deleterious chemicals and lack selectivity.
Stuart Angiolini +6 more
wiley +1 more source
Mechanism of Sulfate Activation Catalyzed by ATP Sulfurylase - Magnesium Inhibits the Activity
Computational and Structural Biotechnology Journal, 2019 ATPS Sulfurylase (ATPS) is the first of three enzymes in the sulfate reduction pathway - one of the oldest metabolic pathways on Earth, utilized by Sulfate Reducing Bacteria (SRB). Due to the low redox potential of the sulfate ion, its reduction requires
Anna Wójcik-Augustyn +2 more
doaj
Real hypervalency in a small molecule.
, 2016 Hypervalency is defined as a molecule that contains one or more main group elements formally bearing more than eight electrons in their valence shell. One example of a molecule so characterised was CLi <sub> 6 </sub> [cite]10.1038/355432a0[/cite] where the description "“ <em> carbon can expand its octet of electrons to ...
openaire +1 more source
Bromostibine complexes of iron(II): hypervalency and reactivity
, 2014 The halostibine complexes [CpFe(CO)2(SbMe2Br)][CF3SO3] and [CpFe(CO)2(SbMe2Br)][BF4] both contain significant interactions between the anion and the formally neutral Sb(III) ligand, which simultaneously displays Lewis acidic and Lewis basic properties ...
Benjamin, Sophie L. +4 more
core +1 more source