About: Reaction of 2-naphthol with substituted benzenediazonium salts in [bmim][BF4]     Goto   Sponge   NotDistinct   Permalink

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  • Byla studována azokopulační reakce 4-substituovaných benzenediazonium-tetrafluoroborátů s 2-naftolem v [bmim][BF4] za přitomnosti triethylaminu (B) a triethylamonium tetrafluoroborátu (BH) (1:1) a za podmínek pseudoprvního řádu při 25 C. Bylo zjištěno, že pozorovaná rychlostní konstanta (kobs) azokopulace roste lineárně s rostoucí koncentrací triethylaminu. Na základě kinetického isotopového efektu měřeného u 1-deuterio-2-naftolu (kH/kD = 1), bylo zjištěno, že lineární nárůst kobs vs. [B] nepřísluší obecné bazické katalýze, a rychlost určující krok je podobně jako v jiných rozpouštědlech tvorba Whelandova tetrahedrálního intermediátu. Tento fakt byl také potvrzen hodnotou reakční konstanty rho = 1.2. (cs)
  • Diazo-coupling reaction of 4-substituted benzenediazonium tetrafluoroborates with 2-naphthol in [bmim][BF4] has been studied in the presence of triethylamine (B) and triethylammonium tetrafluoroborate (BH) (1:1) under the conditions of pseudo-first-order reaction at 25 C. It was found that the observed rate constant (kobs) of the diazocoupling reaction increases linearly with increasing concentration of triethylamine. On the basis of kinetic isotope effect measured with 1-deuterio-2-naphthol (kH/kD = 1), it was shown that the linear increase in kobs vs. [B] is not due to general base catalysis, and the rate-limiting step is, like in molecular solvents, the formation of Wheland tetrahedral intermediate. This fact was also confirmed by the value of the reaction constant rho = 1.2.
  • Diazo-coupling reaction of 4-substituted benzenediazonium tetrafluoroborates with 2-naphthol in [bmim][BF4] has been studied in the presence of triethylamine (B) and triethylammonium tetrafluoroborate (BH) (1:1) under the conditions of pseudo-first-order reaction at 25 C. It was found that the observed rate constant (kobs) of the diazocoupling reaction increases linearly with increasing concentration of triethylamine. On the basis of kinetic isotope effect measured with 1-deuterio-2-naphthol (kH/kD = 1), it was shown that the linear increase in kobs vs. [B] is not due to general base catalysis, and the rate-limiting step is, like in molecular solvents, the formation of Wheland tetrahedral intermediate. This fact was also confirmed by the value of the reaction constant rho = 1.2. (en)
Title
  • Reaction of 2-naphthol with substituted benzenediazonium salts in [bmim][BF4]
  • Reakce 2-naftolu se substituovanými benzendiazoniovými solemi v [bmim][BF4] (cs)
  • Reaction of 2-naphthol with substituted benzenediazonium salts in [bmim][BF4] (en)
skos:prefLabel
  • Reaction of 2-naphthol with substituted benzenediazonium salts in [bmim][BF4]
  • Reakce 2-naftolu se substituovanými benzendiazoniovými solemi v [bmim][BF4] (cs)
  • Reaction of 2-naphthol with substituted benzenediazonium salts in [bmim][BF4] (en)
skos:notation
  • RIV/00216275:25310/07:00005756!RIV08-MSM-25310___
http://linked.open.../vavai/riv/strany
  • 326-331
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA104/03/0393), Z(MSM0021627501)
http://linked.open...iv/cisloPeriodika
  • 3
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
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  • 446487
http://linked.open...ai/riv/idVysledku
  • RIV/00216275:25310/07:00005756
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • azocoupling; benzenediazonium salts; ionic liquids; mechanism (en)
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http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [640DE603E17A]
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http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 73
http://linked.open...iv/tvurceVysledku
  • Lyčka, Antonín
  • Hanusek, Jiří
  • Macháček, Vladimír
http://linked.open...n/vavai/riv/zamer
issn
  • 0143-7208
number of pages
http://localhost/t...ganizacniJednotka
  • 25310
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