Results 41 to 50 of about 25,787 (276)
Enzymatic functionalization of carbon-hydrogen bonds [PDF]
, 2011 The development of new catalytic methods to functionalize carbon–hydrogen (C–H) bonds continues to progress at a rapid pace due to the significant economic and environmental benefits of these transformations over traditional synthetic methods.
Arnold, Frances H. +2 more
core +1 more source
Synthesis and spectrometric study of some nucleophilic reactions of the antiepileptic molecule; 5,5-diphenyl imidazolidine-2,4-dione. [PDF]
مجلة جامعة الانبار للعلوم الصرفة, 2018 New reaction routs were performed for the compound 5,5-diphenyl 2,4-imidazolidinedione (I) to give derivatives (II – VII). These reactions include acylation, halogenation, reduction, and nucleophilic substitutions. Most of the derivatives showed variable
Saadi M. D. Al-Nuzal +2 more
doaj +1 more source
Insights into enzymatic halogenation from computational studies [PDF]
, 2014 The halogenases are a group of enzymes that have only come to the fore over the last 10 years thanks to the discovery and characterization of several novel representatives.
Senn, Hans M.
core +2 more sources
Halogen⋯halogen contra C–H⋯halogen interactions
CrystEngComm, 2014 Pressure affects the competition between C–H⋯X hydrogen bonds and X⋯X halogen⋯halogen interactions. In bromomethane, CH3Br, pressure changes the molecular arrangement of the two solid-state phases of this compound: low-pressure phase α is dominated by halogen⋯halogen interactions, whereas above 1.5 GPa the β phase is governed by C–H⋯halogen bonds.
Marcin Podsiadło +2 more
openaire +2 more sources
Metals, 2018 The present study focuses on the pyrolysis of discarded smartphone displays in order to investigate if a halogenation and volatilization of indium is possible without a supplementary halogenation agent.
Benedikt Flerus +4 more
doaj +1 more source
Asymmetric synthesis of gonytolide A: strategic use of an aryl halide blocking group for oxidative coupling [PDF]
, 2018 The first synthesis of the chromanone lactone dimer gonytolide A has been achieved employing vanadium(V)-mediated oxidative coupling of the monomer gonytolide C. An o-bromine blocking group strategy was employed to favor para- para coupling and to enable
Iwata, Takayuki +5 more
core +1 more source
Frontiers in Chemistry, 2018 In this work we present the first computational study on the hectochlorin biosynthesis enzyme HctB, which is a unique three-domain halogenase that activates non-amino acid moieties tethered to an acyl-carrier, and as such may have biotechnological ...
Amy Timmins +5 more
doaj +1 more source
Iron(III)-catalyzed chlorination of activated arenes [PDF]
, 2017 A general and regioselective method for the chlorination of activated arenes has been developed. The transformation uses iron(III) triflimide as a powerful Lewis acid for the activation of N-chlorosuccinimide and the subsequent chlorination of a wide ...
Andrew Sutherland +8 more
core +1 more source
Unusual structure-energy correlations in intramolecular Diels–Alder reaction transition states [PDF]
, 2014 Detailed analysis of calculated data from an experimental/computational study of intramolecular furan Diels–Alder reactions has led to the unusual discovery that the mean contraction of the newly forming C-C σ-bonds from the transition state to the ...
Bebbington, Magnus +3 more
core +2 more sources
Halogenation effect on physicochemical properties of Ti3C2 MXenes
JPhys Materials, 2023 Halogenated MXenes have been experimentally demonstrated to be promising two-dimensional materials for a wide range of applicability. However, their physicochemical properties are largely unknown at the atomic level.
Seyedeh Alieh Kazemi +6 more
doaj +1 more source