Results 51 to 60 of about 31,763 (329)

Iron(III)-catalyzed chlorination of activated arenes [PDF]

open access: yes, 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

Decarboxylative Halogenation of Organic Compounds

open access: yesChemical Reviews, 2020
Decarboxylative halogenation, or halodecarboxylation, represents one of the fundamental key methods for the synthesis of ubiquitous organic halides. The method is based on conversion of carboxylic acids to the corresponding organic halides via selective ...
A. Varenikov, E. Shapiro, Mark Gandelman
semanticscholar   +1 more source

Synthesis and spectrometric study of some nucleophilic reactions of the antiepileptic molecule; 5,5-diphenyl imidazolidine-2,4-dione. [PDF]

open access: yesمجلة 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

Nontargeted biomonitoring of halogenated organic compounds in two ecotypes of bottlenose dolphins (Tursiops truncatus) from the Southern California Bight. [PDF]

open access: yes, 2015
Targeted environmental monitoring reveals contamination by known chemicals, but may exclude potentially pervasive but unknown compounds. Marine mammals are sentinels of persistent and bioaccumulative contaminants due to their longevity and high trophic ...
Aluwihare, Lihini I   +8 more
core   +3 more sources

Oxidation of Iodine to Dihaloiodate(I) Salts of Amines With Hydrogen Peroxides and Their Crystal Structures

open access: yesFrontiers in Chemistry, 2022
Herein we report a general preparation of dihaloiodate salts of heterocyclic amines (tertiary and quaternary) with sterically accessible and hindered nitrogen atom.
Griša Grigorij Prinčič   +3 more
doaj   +1 more source

Asymmetric synthesis of gonytolide A: strategic use of an aryl halide blocking group for oxidative coupling [PDF]

open access: yes, 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

Microbial Halogenation With Specific Reference to Chiloroperoxidase

open access: yesASEAN Journal on Science and Technology for Development, 2017
Microbial Halogenation With Specific Reference to ...
D.C Smith   +5 more
doaj   +1 more source

Halogenation as a tool to tune antimicrobial activity of peptoids

open access: yesScientific Reports, 2020
Antimicrobial peptides have attracted considerable interest as potential new class of antibiotics against multi-drug resistant bacteria. However, their therapeutic potential is limited, in part due to susceptibility towards enzymatic degradation and low ...
N. Molchanova   +7 more
semanticscholar   +1 more source

Synthesis and Characterization of Mixed Methyl/Allyl Monolayers on Si(111) [PDF]

open access: yes, 2010
The formation of mixed methyl/allyl monolayers has been accomplished through a two-step halogenation/alkylation reaction on Si(111) surfaces. The total coverage of alkylated Si, the surface recombination velocities, and the degree of surface oxidation as
Brunschwig, Bruce S.   +3 more
core   +1 more source

Re‐Programming and Optimization of a L‐Proline cis‐4‐Hydroxylase for the cis‐3‐Halogenation of its Native Substrate

open access: yes, 2021
Non‐heme iron/α‐ketoglutarate dependent halogenases acting on freestanding substrates catalyze the regio‐ and stereoselective halogenation of inactivated C(sp3)‐H bonds.
A. Papadopoulou   +6 more
semanticscholar   +1 more source

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