Results 1 to 10 of about 169,227 (310)

Synthetic approaches to difluoroindolecarboxylic acid ethyl esters [PDF]

open access: yesARKIVOC, 2003
Synthetic approaches to ethyl 4,5-difluoroindole-2-carboxylate and ethyl 5,6-difluoroindole-2- carboxylate by Fischer indole synthesis and by the reaction of lithiated N-BOC-3,4-difluoro-2- methylaniline with diethyl oxalate or ethyl bromopyruvate were investigated.
Romano Silvestri   +3 more
doaj   +3 more sources

Steady State Counterbalance Valve Modeling with the Influence of Synthetic Ester Oils Using CFD [PDF]

open access: yesModeling, Identification and Control, 2020
This study looks in details at the effects of synthetic esters being applied to a counterbalance valve from the perspective of a system engineer. There is limited literature on the subject of applied synthetic esters and as such limited unbiased sources ...
Jannik Hartwig Jakobsen   +1 more
doaj   +1 more source

Use Performance and Management of Biodegradable Fluids as Transformer Insulation

open access: yesEnergies, 2021
In recent years, the use of biodegradable fluids as liquid insulation for distribution and power transformers is spreading. The main biodegradable fluids used are natural and synthetic esters, although biodegradable hydrocarbons have been recently ...
Belén García   +4 more
doaj   +1 more source

Masked ω-Lithio Ester Enolates: Synthetic Applications [PDF]

open access: yesMolecules, 2004
The protocol of lithiation by means of lithium and a catalytic (5% molar) amount of DTBB (4,4’-di-tert-butylbiphenyl), applied to ω-chloro ortho ester 6 under Barbier-type conditions gives, after final acid-catalyzed methanolysis, the corresponding functionalized esters 8 or 9 (for chlorotrimethylsilane as electrophile) or, after ortho ester ...
Yus, Miguel   +2 more
openaire   +3 more sources

A Review on Synthetic Ester Liquids for Transformer Applications

open access: yesEnergies, 2020
Synthetic esters have become more and more popular in last few decades, explaining the increasing number of units filled with this liquid year by year.
Pawel Rozga   +4 more
doaj   +1 more source

Radical Decarboxylative Carbon–Nitrogen Bond Formation

open access: yesMolecules, 2023
The carbon–nitrogen bond is one of the most prevalent chemical bonds in natural and artificial molecules, as many naturally existing organic molecules, pharmaceuticals, agrochemicals, and functional materials contain at least one nitrogen atom.
Xiangting Li   +4 more
doaj   +1 more source

Synthetic applications of ortho esters [PDF]

open access: yesPure and Applied Chemistry, 1999
Abstract
Wipf, P, Tsuchimoto, T, Takahashi, H
openaire   +1 more source

Synthetic lubricants based on copolymers of n-butyl methacrylate and α-olefins [PDF]

open access: yesHemijska Industrija, 2002
Synthetic fluids obtained by the copolymerization of α -olefins with alkyl esters of unsaturated carboxylic acids have a unique combination of properties of non-polar poly-a-olefins (PAOs) and polar esters in a single molecule.
Đakov Tatjana A.   +2 more
doaj   +1 more source

Synthesis, and Spectral Characterization of 6-O-Octanoyl-1,2-O-isopropylidene-α-D-glucofuranose Derivatives

open access: yesJournal of the Turkish Chemical Society, Section A: Chemistry, 2021
Site selective acylation of monosaccharides and oligosaccharides are very necessary for the preparation of both natural and novel synthetic carbohydrate compounds, synthetic intermediates, postglycosylation modifications, and for the preparation of ...
Puja DEVİ   +3 more
doaj   +1 more source

Application of Near-Infrared Spectroscopy to Measure the Water Content in Liquid Dielectrics

open access: yesEnergies, 2022
The article discusses the methods used to measure the water content in liquid dielectrics. The pros and cons of currently used methods are presented. The main aim of the research was to check the possibility of using near-infrared spectroscopy to measure
Piotr Przybylek
doaj   +1 more source

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