Results 11 to 20 of about 166,028 (261)

Cesium Carbonate-Catalyzed α-Phenylchalcogenation of Carbonyl Compounds with Diphenyl Dichalcogenide

open access: yesMolecules, 2009
It was found that cesium carbonate has a unique catalytic ability on the reaction of carbonyl compounds with diphenyl diselenide to give the corresponding α-phenylseleno carbonyl compounds in moderate to good yields.
Yutaka Nishiyama   +3 more
doaj   +1 more source

Compostos carbonílicos atmosféricos: fontes, reatividade, níveis de concentração e efeitos toxicológicos Atmospheric carbonyl compounds: sources, reactivity, concentration levels and toxicologic effects

open access: yesQuímica Nova, 2002
In the last three decades carbonyl compounds, aldehydes and ketones, have received a great deal of attention due to their strong influence on photochemical smog formation and their recognized adverse human health effects.
Marta Valéria Almeida Santana de Andrade   +3 more
doaj   +1 more source

Microfluidic Preconcentration Chip with Self-Assembled Chemical Modified Surface for Trace Carbonyl Compounds Detection

open access: yesSensors, 2018
Carbonyl compounds in water sources are typical characteristic pollutants, which are important indicators in the health risk assessment of water quality.
Jie Cheng   +6 more
doaj   +1 more source

PERIODIDES OF CARBONYL COMPOUNDS. [PDF]

open access: yesJournal of the American Chemical Society, 1920
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openaire   +1 more source

Electrochemically driven desaturation of carbonyl compounds [PDF]

open access: yesNature Chemistry, 2020
Electrochemical techniques have long been heralded for their innate sustainability as efficient methods to achieve redox reactions. Carbonyl desaturation, as a fundamental organic oxidation, is an oft-employed transformation to unlock adjacent reactivity through the formal removal of two hydrogen atoms.
Samer Gnaim   +8 more
openaire   +2 more sources

Reduction of Carbonyl Compounds with (±)-2-Trimethylsilyl-2,3-dicarba-nido-hexaborane(8)

open access: yesCHIMIA, 1986
The racemic nido-carbaborane 1 reduces aldehydes and ketones but not styrene after addition of small amounts of water.
Urs von Arx   +2 more
doaj   +1 more source

Visible-light photoredox-catalyzed umpolung carboxylation of carbonyl compounds with CO2

open access: yesNature Communications, 2021
Compounds bearing a carbonyl group, such as aldehydes and ketones, are important industrial chemicals and widespread in pharmaceuticals and natural products.
Guang-Mei Cao   +7 more
doaj   +1 more source

Fe(OTf)3-catalysed Friedel–Crafts reaction of benzenoid arenes with α,β-unsaturated carbonyl compounds: easy access to 1,1-diarylalkanes [PDF]

open access: yesRoyal Society Open Science, 2017
A simple and efficient method for the synthesis of 1,1-diarylalkanes via the Friedel–Crafts-type alkylation reaction of electron-rich arenes with cinnamic acid ester derivatives or chalcones is reported.
Aditya Bhattacharya   +2 more
doaj   +1 more source

Phosphoranaloga von Aminosäuren und Peptiden: Kettenverlängerung von Carbonylverbindungen

open access: yesCHIMIA, 1982
Synthesis of carbonyl compounds 5 involving the Wittig-Horner reaction of diethyl-1-isocyanoalkylphosphonate 1 with carbonyl compounds 2 and subsequent hydrolysis of the vinyl isocyanides 3 formed is reported.
Janusz Rachoń
doaj   +1 more source

Adsorptive removal of some carbonyl containing compounds from aqueous solutions using Iraqi porcelanite rocks: a kinetic-model study [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2022
The kinetics of removal of Acetaldehyde (A,Al), Benzaldehyde (B.al),2-Butanone (2-But), Acetophenone (A.Ph) and Benzophenone (B.Ph) from their aqueous solution by adsorption onto powder of  Iraqi Porcelanite   rocks was investigated.
Ahmed M Alwan Al Mashhadani   +3 more
doaj   +1 more source

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