Results 91 to 100 of about 62,031 (280)

Otto Billeter or How the Oldest [3,3]-Sigmatropic Rearrangement Went to Neuchâtel Otto Billeter oder wie die älteste [3,3]-sigmatrope Umlagerung nach Neuenburg kam: Teil1

open access: yesCHIMIA, 1999
A historical study on the early chemistry of organic isothiocyanates (mustard oil) and thiocyanates (rhodanides) is presented. The isomeric structures of these compounds were settled by the famous investigations of August Wilhelm Hofmann ...
Hans-Jürgen Hansen
doaj  

Synthesis of Bifunctional Allylic Compounds by Using Cyclopropenes as Functionalized Allyl Equivalents [PDF]

open access: yesAngewandte Chemie, 2018
AbstractThe synthesis of uncommon bifunctional allylic derivatives bearing a silane and an alcohol within the same allylic framework is reported. This method relies on the coupling of hydrosilanes with substituted and functionalized cyclopropenes, which deliver the allyl fragment.
Sergio Mata   +2 more
openaire   +3 more sources

Effect of Imidazolium Concentration in Densely Functional Polymer Binder on Robust Electrochemical Kinetics and Cycling Performance of Lithium Iron Phosphate Cathode

open access: yesAdvanced Energy and Sustainability Research, EarlyView.
The improved performance of the cathodic half‐cell containing poly(oxycarbonylmethylene 1‐allyl‐3‐methylimidazolium) (PMAI) binder (PMAI/LFP) is attributed to the ion conduction properties of imidazolium‐functionalized polymer, which participates in cathode‐electrolyte interphase (CEI) formation as confirmed by X‐ray photoelectron spectroscopy and ...
Amarshi Patra   +3 more
wiley   +1 more source

Two related copper(I) π-complexes based on 2-allyl-5-(2-pyridyl)-2H-tetrazole ligand: Synthesis and structure of [Cu(2-apyt)NO3] and [Cu(2-apyt)(H2O)](BF4) compounds

open access: yesActa Chimica Slovenica, 2016
By means of the alternating current electrochemical technique two new [Cu(2-Apyt)NO3] (1) and [Cu(2-Apyt)(H2O)](BF4) (2) π-compounds have been obtained starting from the mixture of 1-allyl-5-(2-pyridyl)-2H-tetrazole (1-Apyt) and 2-allyl-5-(2-pyridyl)-2H ...
Yurii Slyvka   +4 more
doaj   +1 more source

Preparation, Structure, and Reactivity of Nonstabilized Organoiron Compounds. Implications for Iron-Catalyzed Cross Coupling Reactions [PDF]

open access: yes, 2008
A series of unprecedented organoiron complexes of the formal oxidation states −2, 0, +1, +2, and +3 is presented, which are largely devoid of stabilizing ligands and, in part, also electronically unsaturated (14-, 16-, 17- and 18-electron counts ...
Fürstner, A.   +5 more
core   +1 more source

Identification of Exhaled Volatile Organic Compounds Biomarkers for Lung Cancer Under Data‐Limited Conditions Using Data Augmentation and Multi‐View Feature Selection

open access: yesAdvanced Intelligent Discovery, EarlyView.
This work introduces a novel framework for identifying non‐small cell lung cancer biomarkers from hundreds of volatile organic compounds in breath, analyzed via gas chromatography‐mass spectrometry. This method integrates generative data augmentation and multi‐view feature selection, providing a stable and accurate solution for biomarker discovery in ...
Guancheng Ren   +10 more
wiley   +1 more source

Synthesis and anаlgеsic properties of (3-allyl-4-aryl-3H-thiazol-2-ylidene)-[4-(6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-3-yl)phenyl]amine derivatives

open access: yesФармацевтичний журнал, 2018
In recent years, attention to itself attracted by the problem of pain treatment, which is due to a noticeable increase in patients, especially the able-bodied age. The aim of the study was to synthesize substances with potentially analgesic properties in
S. A. Demchenko   +5 more
doaj   +1 more source

Asymmetric synthesis of 2-substituted oxetan-3-ones via metalated SAMP/RAMP hydrazones [PDF]

open access: yes, 2013
2-Substituted oxetan-3-ones can be prepared in good yields and enantioselectivities (up to 84% ee) by the metalation of the SAMP/RAMP hydrazones of oxetan-3-one, followed by reaction with a range of electrophiles that include alkyl, allyl, and benzyl ...
Beasley, Benjamin   +3 more
core   +1 more source

Synthesis of Enantiopure Oxygen- and Nitrogen-Containing Heterocycles by Diastereoselective Ring-Closing Metathesis Reaction in Perhydro-1,3-benzoxazine Derivatives [PDF]

open access: yes, 2019
Producción CientíficaDiastereoselective ring‐closing metathesis reactions on chiral trienic perhydro‐1,3‐benzoxazines derived from (−)‐8‐aminomenthol featuring two diastereotopic olefin chains is described.
Andrés Juan, Celia   +4 more
core   +2 more sources

Stabilization of the alleged bishomoromatic bicyclo[3.2.1]octa-2,6-dienyl anion by counterion interactions and by hyperconjugation [PDF]

open access: yes, 1986
Hyperconjugation and inductive effects, rather than homoaromaticity, are responsible for the stabilization of the title anion in the gas phase; interaction of the double bond with the Li+ gegenion in the endo geometry contributes additionally in ...
Chandrasekhar, Jayaraman   +4 more
core   +1 more source

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