About: Synthesis, molecular structure, electrochemistry and DFT study of a ferrocenyl-substituted 4-quinazolinone and related heterocycles     Goto   Sponge   NotDistinct   Permalink

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  • 2-Ferrocenyl-4(3H)-quinazolinone (2) was obtained by acylation of 2-aminobenzoic amide with ferrocenecarbonyl chloride (FcCOCl) and subsequent base-catalysed cyclisation of the intermediate 2-(ferrocenecarboxamido)benzamide (1). The related benzoxazin-4-one (4) was obtained analogously (though in one step) from FcCOCl and 2-aminobenzoic acid. Compounds 2 and 4 were thionated with P2S5 to give the corresponding ferrocenylated 4(3H)-quinazoline thione (3), and a mixture of benzothiazine-4-thione (5) and benzothiazine-4-one (6, major), respectively. Attempts to prepare 3-amino-2-ferrocenyl-4(3H)-quinazolinone from 4 and hydrazine hydrate failed. The reaction gave only 2-(ferrocenecarboxamido)benzohydrazide (7), which reacted with 2-chloro-1,3-dimethylimidazolidinium chloride to afford a mixture of cyclic and open (major) condensation products, both bearing the 1,3-dimethylimidazolidin-2-ylidene terminal group (8 and 9). All compounds were characterised by spectroscopic methods and the molecular structures of 1-7 and 9 were determined by X-ray diffraction analysis. Cyclic voltammetric measurements revealed that the compounds undergo a single one-electron oxidation, localised presumably at the ferrocene unit. DFT computations for 2 as a representative example performed in the gas phase and crystal state, reproduced well the experimental geometry and further supported the assignment of the redox processes.
  • 2-Ferrocenyl-4(3H)-quinazolinone (2) was obtained by acylation of 2-aminobenzoic amide with ferrocenecarbonyl chloride (FcCOCl) and subsequent base-catalysed cyclisation of the intermediate 2-(ferrocenecarboxamido)benzamide (1). The related benzoxazin-4-one (4) was obtained analogously (though in one step) from FcCOCl and 2-aminobenzoic acid. Compounds 2 and 4 were thionated with P2S5 to give the corresponding ferrocenylated 4(3H)-quinazoline thione (3), and a mixture of benzothiazine-4-thione (5) and benzothiazine-4-one (6, major), respectively. Attempts to prepare 3-amino-2-ferrocenyl-4(3H)-quinazolinone from 4 and hydrazine hydrate failed. The reaction gave only 2-(ferrocenecarboxamido)benzohydrazide (7), which reacted with 2-chloro-1,3-dimethylimidazolidinium chloride to afford a mixture of cyclic and open (major) condensation products, both bearing the 1,3-dimethylimidazolidin-2-ylidene terminal group (8 and 9). All compounds were characterised by spectroscopic methods and the molecular structures of 1-7 and 9 were determined by X-ray diffraction analysis. Cyclic voltammetric measurements revealed that the compounds undergo a single one-electron oxidation, localised presumably at the ferrocene unit. DFT computations for 2 as a representative example performed in the gas phase and crystal state, reproduced well the experimental geometry and further supported the assignment of the redox processes. (en)
Title
  • Synthesis, molecular structure, electrochemistry and DFT study of a ferrocenyl-substituted 4-quinazolinone and related heterocycles
  • Synthesis, molecular structure, electrochemistry and DFT study of a ferrocenyl-substituted 4-quinazolinone and related heterocycles (en)
skos:prefLabel
  • Synthesis, molecular structure, electrochemistry and DFT study of a ferrocenyl-substituted 4-quinazolinone and related heterocycles
  • Synthesis, molecular structure, electrochemistry and DFT study of a ferrocenyl-substituted 4-quinazolinone and related heterocycles (en)
skos:notation
  • RIV/00216208:11310/13:10134332!RIV14-MSM-11310___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • I, Z(MSM0021620857)
http://linked.open...iv/cisloPeriodika
  • 7
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 109517
http://linked.open...ai/riv/idVysledku
  • RIV/00216208:11310/13:10134332
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • DFT study; structure elucidation; electrochemistry; synthesis; heterocycles; ferrocene (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [4A7C0CE880C0]
http://linked.open...i/riv/nazevZdroje
  • New Journal of Chemistry
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 37
http://linked.open...iv/tvurceVysledku
  • Císařová, Ivana
  • Tauchman, Jiří
  • Uhlík, Filip
  • Štěpnička, Petr
  • Hladíková, Kateřina
http://linked.open...ain/vavai/riv/wos
  • 000320466600024
http://linked.open...n/vavai/riv/zamer
issn
  • 1144-0546
number of pages
http://bibframe.org/vocab/doi
  • 10.1039/c3nj00182b
http://localhost/t...ganizacniJednotka
  • 11310
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