Results 41 to 50 of about 11,487 (192)

Direct polymerization of levulinic acid via Ugi multicomponent reactiont [PDF]

open access: yes, 2016
A robust, direct and efficient approach has been developed for the utilization of levulinic acid (LevA) as a building block in the synthesis of polyamides.
Alonso   +38 more
core   +1 more source

Porosity through reduction in metal oxides [PDF]

open access: yes, 2008
Routes to porous materials with nanoscale dimensions have been investigated. In the first example presented, porous manganese oxide has been prepared by leaching Ni metal from a nickel-manganese oxide precursor via reduction.
Corr, S.A.   +2 more
core   +1 more source

Preparation and Self-Assembly of pH-Responsive Hyperbranched Polymer Peptide Hybrid Materials

open access: yesNanomaterials, 2023
In recent years, the coupling of structurally and functionally controllable polymers with biologically active peptide materials to obtain polymer-peptide hybrids with excellent properties and biocompatibility has led to important research progress in the
Yan Qin, Jianguo Yi, Yue Zhang
doaj   +1 more source

Wilson Loops in N=2 Superconformal Yang-Mills Theory [PDF]

open access: yes, 2010
We present a three-loop O(g^6) calculation of the difference between the expectation values of Wilson loops evaluated in N=4 and superconformal N=2 supersymmetric Yang-Mills theory with gauge group SU(N) using dimensional reduction.
Andree, Roman, Young, Donovan
core   +2 more sources

Optimized Conditions for Passerini-Smiles Reactions and Applications to Benzoxazinone Syntheses

open access: yesMolecules, 2016
Initial conditions disclosed for the Passerini-Smiles reaction are associated with a lack of efficiency that has prevented chemists from using it since its discovery.
Elodie Martinand-Lurin   +6 more
doaj   +1 more source

Potential Aphid (Hemiptera: Aphididae) Vectors of Plum-pox Virus (Virus:Potyviridae) and Status of Sharka Disease in Stone Fruit Orchards in the East Mediterranean Region of Turkey

open access: yesJournal of Agricultural Sciences, 2021
This study was conducted in stone fruit orchards in five provinces of the East Mediterranean Region of Turkey between the years of 2009-2011. The aim of the study was to determine the potential aphid vectors of the quarantine pathogen PPV (plum pox virus,
Melike Yurtmen   +2 more
doaj   +1 more source

The mathematical description of the electrosynthesis of composites of oxy-hydroxycompounds cobalt with polypyrrole overooxidazed [PDF]

open access: yes, 2016
The electrosynthesis of the composite with of the overoxidized polypyrrole with cobalt oxy-hydroxide in strongly acidic media has been described mathematically, using linear stability theory and bifurcation analysis. The steadystates stability conditions
Maia, J.   +5 more
core   +2 more sources

A Mild, Fast, and Scalable Synthesis of Substituted α-Acyloxy Ketones via Multicomponent Reaction Using a Continuous Flow Approach

open access: yesFrontiers in Chemistry, 2019
A continuous flow approach for the synthesis of α-acyloxy ketone derivatives from the corresponding arylglyoxals, isocyanides, and carboxylic acids is described. The target products were obtained in excellent yields in short residence times and with high
Carlos Eduardo M. Salvador   +1 more
doaj   +1 more source

A straightforward approach towards combined α-amino and α-hydroxy acids based on Passerini reactions

open access: yesBeilstein Journal of Organic Chemistry, 2011
Complex amino acids with an α-acyloxycarbonyl functionality in the side chain are easily available through epoxide opening by chelated enolates and subsequent oxidation/Passerini reaction. This protocol works with both, aldehyde and ketone intermediates,
Ameer F. Zahoor   +2 more
doaj   +1 more source

Multicomponent reactions of methyl substituted all-cis tetrafluorocyclohexane aldehydes [PDF]

open access: yes, 2016
The authors thank the EPSRC for supporting this work and DO’H is grateful for a Royal Society Wolfson Research Merit Award.This paper reports the preparation of methyl substituted all-cis tetrafluorocyclohexanes prepared from a Birch reduction of benzoic
Al-Maharik, Nawaf   +3 more
core   +1 more source

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