Faller, J. W. published the artcileA new solvatochromic chelating agent, Quality Control of 1860-58-8, the publication is Analytica Chimica Acta (1965), 32(6), 586-9, database is CAplus.
cf. CA 59, 10744h; 62, 6597e. The preparations are described of a solvatochromic chelating agent, 2 – (4′-hydroxy-3′-methoxystyryl)-5-(8-hydroxy-5-quinaldylmethyl)-1-methyl-8-hydroxyquinolinium Cl (1 merocyanine) (I); I.H2O m. 250¡ã (decomposition), by the piperidine catalyzed condensation of the N-Me derivative of bis(8-hydroxy-5-quinaldyl)methane with vanillin; and of a bifunctional chelating agent 5-(8-hydroxy-5-quinolylmethyl)-8-hydroxyquinaldine (II) (m. 219-20¡ã), following the methods of Fiedler (CA 57, 7227h) for similar compounds The effect of solvent polarity on the absorption spectra of I is shown. The principal maximum and the log ¦Å (molar absorptivities) of the following I solutions are: 0.1NHCl 325,414; 4.20, 4.46; 0.01N KOH 375, 478; 4.15, 4.50; 90% MeOH- 0.01N KOH 392, 514; 4.09, 4.57; 90% PrOH-, 397, 525; 4.13, 4.58; 90% iso-PrOH-, 400, 526; 4.15, 4.59; 90% Me2CO-0.01N KOH 405, 530; 4.40, 4.66; PhCH2OH (saturated with 0.01N KOH) 385, 545; 4.32, 4.06; CHCl3 (saturated with 0.01N KOH) 389, 611; 4.74, 3.52; 30% C5H5N (III) -, 509; 4.58; 50% III -, 399, 527; 4.14, 4.57; 80% III-, 401, 530, 561; 4.38, 4.23, 4.23; 86% III-, 593; 3.95; 94% III-, 403, 605; 4.57, 3.91; and 98% III-0.01N KOH solvent, 609 m¦Ì; 3.89, resp. At low III concentrations, protons were removed only from the O atoms of the vanillylidene and 8-hydroxyquinaldyl groups, while at the higher (¡Ý80%) III concentrations the proton was also removed from the remaining OH. At pH 9, I formed red H2O-insoluble, PhCH2OH soluble chelates with Ni2+, Cu2+, Zn2+, Co2+, Mg2+, Al3+ and Fe3+; at pH 5, I gave orange compounds with Ni2+, Cu2+, Zn2+, and Co2+, with solubility similar to that of the red chelates. The PhCH2OH/alk. aqueous I solubility ratio is ?60. The stoichiometric Cu-II2 (containing 9.2% Cu) and Al-II3 (containing 2.8% Al) were prepared as described by Hollingshead (Oxine and its Derivatives, London: Butterworths, 1954). The ir spectra of II, on KBr pellets, had OH and aromatic bands and strong maximum at 12.1, 12.8 and 14.1 ¦Ì. The principal uv maximum of II, and the resp. log ¦Å were: (in 0.1N HCl) 258, 4.94; 313, 3.62; 324, 3.61; and 371, 3.70; (in 0.1N NaOH) 258, 4.74; 344, 3.84; and 365 m¦Ì, 3.82.
Analytica Chimica Acta published new progress about 1860-58-8. 1860-58-8 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2-(3-(Benzyloxy)phenyl)acetic acid, and the molecular formula is C15H14O3, Quality Control of 1860-58-8.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia