Quinoline 1-oxide, hydroxy

Quinoline 1-oxide, hydroxy-, 360 4ff-Quinolizine, 146, 146-150, 153 9aff-Quinolizines, 143-146, 153 Quinol-2- and -4-ones, 348-352 Quinolonediols, 363 Quinol-2- and -4-thiones, 397, 398 Quinoxaline alkyl-, 428 amino-, 415 hydroxy- 378, 379, 384 reaction with dimethyl acetylenedi-carboxylate, 163-164 Quinoxaline-2-thione, 400, 402... 

Quinoline, 8-hydroxy-alkylation, 2, 349 copper complex adhesive preservative, 1, 411 as fungicide, 1, 195 biocide, 1, 399 corrosion inhibitor, 1, 409 as fungicide, 2, 514 metal complexes, 2, 348 methiodide alkylation, 2, 349 N-oxide... 

Until recent years the only syntheses of 3-hydroxy quinoline involved multistep processes, the last step of which consisted of the conversion of 3-aminoquinoline to 3-hydroxyquinoline via the diazonium salt. " Small quantities of quinoline have been oxidized to 3-hydroxyquinoline in low yields by using oxygen in the presence of ascorbic acid, ethylenediaminetetraacetic acid, ferrous sulfate, and i)hosi)halc buffer. The decarboxylation of 3-hydroxycinchoninic, acid in boiling nitrobenzene has been re-... 

The infrared spectra of 2- and 4-hydroxy quinoline 1-oxide have been interpreted to favor forms 55 and 56,. respectively. Lehm-stedt has discussed the tautomerism of 10-hydroxyacridone (57 58) but reached no definite conclusions. Igeta investigated the... 

A bacterial strain BN6 oxidizes 5-aminonaphthalene-2-sulfonate by established pathways to 6-amino-2-hydroxybenzalpyruvate that undergoes spontaneous cyclization to 5-hydroxy-quinoline-2-carboxylate (Figure 2.2a) (Nortemann et al. 1993). 

C-9, and C-10, always with a phenolic hydroxy group at the 8a position. Moreover, they differ from one another by the oxidation state of the benzylic C-13 as well as by substitution and degree of saturation of the isoquinoline fragment. These alkaloids, classified as benzylisoquinoline alkaloids (2,70-74), have recently been called by Shamma et al. (75-77) pseudobenzyliso-quinolines originating from protoberberine alkaloids. In Table V a list of 8,8a-secoberbine alkaloids, sources, and spectral data are presented. 

Hydrogenation of Quinolines Under Water Gas Shift Conditions and Oxidation of 1,2,3,4-Tetrahydro-quinolines to Hydroxamic Acids 6-Methoxy-1,2,3,4-tetrahydroquinoline and 1-Hydroxy-6-methoxy-3,4-dihydroquinolin-2(1 H)-one. 

Blood protein binding of IQ was found in rats dosed intragastrally with the labelled compound. The same adducts, though in much higher yields, were found when purified rat serum albumin was exposed either to /V-hydroxy-IQ or incubated with parent IQ in the presence of a microsomal system. A tripeptide was isolated which contained lV-(cystein-S -yl)TQ-,S-oxide (sulfinamide) that easily liberated IQ on acidification. Pretreatment of albumin with p-chloromercuri ben zoale reduced covalent binding drastically61. The authors concluded that the reactant most likely to yield this structure is 2-nitroso-3-methylimidazo[4,5-/]quinoline, which is probably formed by autoxidation of /V-hydroxy-IQ. 

Vasudevan, D. Dorley, P.J. Zhuang, X. (2001) Adsorption of hydroxy pyridines and quinolines at the metal oxide-water interface Role of tautomeric equilibrium. Environ. Sci. 

Rhenium can be analyzed by various instrumental techniques that include flame-AA, ICP-AES, ICP-MS, as well as x-ray and neutron activation methods. For flame-AA analysis the metal, its oxide, or other insoluble salts are dissolved in nitric acid or nitric-sulfuric acids, diluted, and aspirated directly into nitrous oxide-acetylene flame. Alternatively, rhenium is chelated with 8-hydroxy quinoline, extracted with methylisobutyl ketone and measured by flame-AA using nitrous oxide-acetylene flame. 

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