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   Articles with "access carbon" as a keyword



Direct extraction of tetracyclines from bovine milk using restricted access carbon nanotubes in a column switching liquid chromatography system.

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recommendations! Published in 2017 at "Food chemistry"

DOI: 10.1016/j.foodchem.2017.01.004

Abstract: This paper describes, for the first time, the use of restricted access carbon nanotubes (RACNTs) in the analysis of tetracyclines from milk samples, in a multidimensional liquid chromatographic system. Milk samples were initially acidified and… read more here.

Keywords: milk; system; column; restricted access ... See more keywords

Access to All-Carbon Quaternary Centers by Photocatalytic Fluoroalkylation of α-Halo Carbonyl Compounds.

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recommendations! Published in 2024 at "Organic letters"

DOI: 10.1021/acs.orglett.4c00041

Abstract: Perfluoroalkyl groups have become significantly important in pharmaceutical and agrochemical applications. In this study, we present a visible light-mediated photoredox neutral strategy for the fluoroalkylation of tertiary alkyl chlorides under transition-metal-free conditions. This method allows… read more here.

Keywords: carbon quaternary; access carbon; centers photocatalytic; quaternary centers ... See more keywords

Access to α-all-carbon quaternary amides through the hydroamidation of allenes using DIBAL-H and isocyanates

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recommendations! Published in 2024 at "Organic Chemistry Frontiers"

DOI: 10.1039/d3qo01855e

Abstract: A regio- and stereoselective hydroamidation of allenes using diisobutylaluminum hydride and isocyanates is described, resulting in the formation of α-quaternary amides. read more here.

Keywords: carbon quaternary; quaternary amides; access carbon; allenes using ... See more keywords

Palladium-catalyzed syn-alkynylarylation of internal alkynes: rapid access to all-carbon tetrasubstituted alkenes.

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recommendations! Published in 2024 at "Chemical communications"

DOI: 10.1039/d4cc03037k

Abstract: Herein, a straightforward method for rapid access to all-carbon tertrasubstituted alkenes bearing alkyl, aryl and alkynyl groups is established via palladium-catalyzed three-component cross-coupling reaction of internal alkynes, haloalkynes and arylboronic acids. This protocol is characterized… read more here.

Keywords: rapid access; access carbon; internal alkynes; palladium catalyzed ... See more keywords