• keto form
  • The title compound, C 16 H 13 NO 3 , exists in the keto form and the iso-quinoline system is essentially planar (mean deviation = 0.0424 Å). (iucr.org)
  • Although the reaction product is commonly depicted as a quinoline (the enol form), it is believed that the keto form predominates in both the solid state and in solution, making the compound a quinolone. (wikipedia.org)
  • chemical reaction
  • In enzymology, a nitroquinoline-N-oxide reductase (EC 1.7.1.9) is an enzyme that catalyzes the chemical reaction 4-(hydroxyamino)quinoline N-oxide + 2 NAD(P)+ + H2O ⇌ {\displaystyle \rightleftharpoons } 4-nitroquinoline N-oxide + 2 NAD(P)H + 2 H+ The 4 substrates of this enzyme are 4-hydroxyaminoquinoline N-oxide, NAD+, NADP+, and H2O, whereas its 4 products are 4-nitroquinoline N-oxide, NADH, NADPH, and H+. (wikipedia.org)
  • anilines
  • It involves the condensation of unsubstituted anilines (1) with β-diketones (2) to form substituted quinolines (4) after an acid-catalyzed ring closure of an intermediate Schiff base (3). (wikipedia.org)
  • Sloop focused specifically on the influences that substituted trifluoro-methyl-β-diketones and substituted anilines would have on the rate of quinoline formation. (wikipedia.org)
  • It was also observed that increasing the bulk of the R group on the diketone and using methoxy-substituted anilines leads to the formation of 2-CF3-quinolines. (wikipedia.org)
  • Owing
  • Owing to its relatively high solubility in water quinoline has significant potential for mobility in the environment, which may promote water contamination. (wikipedia.org)
  • acid
  • The asymmetric unit of the title compound, C 10 H 6 N 2 ·0.5C 4 H 4 O 4 , consists of one quinoline-2-carbonitrile mol-ecule and a half-mol-ecule of fumaric acid, which lies on an inversion center. (pubmedcentralcanada.ca)
  • The reduction of quinoline with sodium borohydride in the presence of acetic acid is known to produce Kairoline A. (C.f. (wikipedia.org)
  • In the archetypal Skraup reaction, aniline is heated with sulfuric acid, glycerol, and an oxidizing agent such as nitrobenzene to yield quinoline. (wikipedia.org)
  • proton
  • Deuterium isotope effects on 13 C-NMR chemical shifts are investigated in a series of 10-hydroxybenzo[ h ]quinolines (HBQ's) The OH proton is deuteriated. (mdpi.com)
  • It is suggested that quinoline yellow exhibits excited-state intramolecular proton transfer (ESIPT) behavior and the behavior might be the cause of its decent photostability, by recent spectroscopic study. (wikipedia.org)
  • mixture
  • It is a mixture of disulfonates (principally), monosulfonates and trisulfonates of 2-(2-quinolyl)indan-1,3-dione with a maximum absorption wavelength of 416 nm.p. 119 Quinoline Yellow is used as a greenish yellow food additive in certain countries, designated in Europe as the E number E104. (wikipedia.org)
  • food
  • Quinoline Yellow is not listed as a permitted food additive in Canada or the US, where it is permitted in medicines and cosmetics and is known as D&C Yellow 10. (wikipedia.org)
  • March 2011 [Guidelines on approaches to the replacement of Tartrazine, Allura Red, Ponceau 4R, Quinoline Yellow, Sunset Yellow and Carmoisine in food and beverages] EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS (November 2009). (wikipedia.org)
  • significant
  • Quinoline Yellow WS has not been associated with any significant long-term toxicity, is not genotoxic or carcinogenic and there is no evidence of adverse effects on reproduction or development. (wikipedia.org)