Výsledky vyhledávání - "Stephen M Hitchen"

Determination of Antifungals in Rodent Diet by Supercritical Fluid Extraction Followed by Packed Column Supercritical Fluid Chromatography with Ultraviolet Detection

Autor: Ian A. Fowlis, Peter Jones, John R. Dean, Edwin Ludkin, Sharmin Khundker, Stephen M Hitchen, Florence Normand

Publikováno v: Journal of AOAC INTERNATIONAL. 80:7-13

Supercritical fluid extraction (SFE) followed by packed column supercritical fluid chromatography with ultraviolet detection was evaluated as a quantitative method for determining 4 antifungals (fluconazole, tioconazole, hexaconazole, and UK- 47,265)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::351fd4647b765c51f382087f26430437
https://doi.org/10.1093/jaoac/80.1.7

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Reactions of pyridinium t-butoxycarbonylmethylide with perfluoropropene and some fluoroaromatics

Autor: Stephen M. Hitchen, Julie Thomson, Ronald E. Banks

Publikováno v: Journal of Fluorine Chemistry. 20:127-131

Perfluorotoluene, pentafluoropyridine, 3-chlorotetrafluoropyridine, and 3,5-dichlorotrifluoropyridine react with pyridinium t-butoxycarbonylmethylide (I) in acetonitrile at 0 – 20 °C to yield, via nucleophilic displacement of a 4-F substituent in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::190657acc67f17bf3ef58e9365ef59c5
https://doi.org/10.1016/s0022-1139(00)84025-7

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Fluorocarbon derivatives of nitrogen. Part II [1] Synthesis of fluorinated N-aryl and N heteroaryliminopyridinium ylides

Autor: Ronald E. Banks, Stephen M. Hitchen

Publikováno v: Journal of Fluorine Chemistry. 12:159-166

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::01b0869b2129151b817ebbdec519e724
https://doi.org/10.1016/s0022-1139(00)82118-1

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Fluorocarbon derivatives of nitrogen. Part VII [1]. Reaction of N-iminopyridinium ylide with perfluoro-1-azacyclohexene, perfluoro-2-azapropene, and perfluoroacetonitrile

Autor: Ronald E. Banks, Stephen M. Hitchen

Publikováno v: Journal of Fluorine Chemistry. 20:373-384

The novel ylides (II) and (III) have been obtained via treatment of perfluoro-1-azacyclohexene and perfluoro-2-azapropene, respectively, with N -iminopyridinium ylide (I) generated in situ from N -aminopyridinium iodide and anhydrous potassium carbon

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::30519b35c4b62273b568578764887985
https://doi.org/10.1016/s0022-1139(00)82230-7

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Reactions of N-iminopyridinium ylide with dipolarophiles of the fluorocarbon class : synthesis of fluorinated 3-azaindolizines

Autor: Ronald E. Banks, Stephen M. Hitchen

Publikováno v: Journal of Fluorine Chemistry. 15:179-181

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::437a757ccc929437af6f45a502c8cee8
https://doi.org/10.1016/s0022-1139(00)82594-4

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Fluorocarbon derivatives of nitrogen. Part 8. Reactions between heteroaromatic N-imines (N-iminopyridinium and N-iminoquinolinium ylide) and perfluoropropene, 2H-pentafluoropropene, perfluorobut-2-ene, perfluoro-(2-methylpent-2-ene), perfluorobut-2-yne, and perfluoropyridine: synthesis of fluorinated 3-azaindolizines (pyrazolo[1,5-a]pyridines)

Autor: Ronald E. Banks, Stephen M. Hitchen

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1. :1593

N-Iminopyridinium ylide reacts with perfluoropropene (or 2H-pentafluoropropene) and perfluorobut-2-ene (or perfluorobut-2-yne) to provide 2-fluoro-3-(trifluoromethyl)pyrazolo[1,5-a]pyridine and 2,3-bis(trifluoromethyl)pyrazolo[1,5-a]pyridine, respect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6be8993929656646c725b5a1970af2b0
https://doi.org/10.1039/p19820001593

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