Abstract
The pK-values of the first and second degree of dissociation of 2.3′-dihydroxy-6′-methyl-3.5-dinitro-diphenylmethane, 2.3′-dihydroxy-6′-methyl-5-nitro-diphenylmethane, 2.3′-dihydroxy-5.6′-dimethyl-3-nitro-diphenylmethane, 2.4′-dihydroxy-3′. 5′-dimethyl-3.5-dinitro-diphenylmethane, 2.4′-dihydroxy-3′. 5′-dimethyl-5-nitro-diphenylmethane and 2.4′-dihydroxy-3′.5.5′-trimethyl-3-nitrodiphenylmethane were determined in aqueous solution at 25°C by the spectrophotometric method. The observed pK-values are compared with those of 2-methyl-4.6-dinitro-phenol, 2-methyl-4-nitrophenol, 2.4-dimethyl-6-nitrophenol, 3.4-dimethylphenol and 2.4.6-trimethylphenol which serve as model compounds for the single phenolic units.
Similar content being viewed by others
Literatur
V. Böhmer, R. Wamßer undH. Kämmerer, Mh. Chem.104, 1315 (1973): bei den Abbildungen sind die Gleichungsnummern 7 und 8 durch 2 und 3 zu ersetzen.
V. Böhmer undB. Mathiasch, Makromol. Chem.148, 41 (1971).
V. Böhmer, K. Wörsdörfer undH. Kämmerer, unveröffentlichte Versuche.
J. D. Roberts, R. A. Clement undJ. J. Drysdale, J. Amer. Chem. Soc.73, 2181 (1951).
S. Kovac, E. Solcàniova undJ. Baxa, Tetrahedron27, 2823 (1971).
F. Kieffer undP. Rumpf, C. r. hebdomad. Sé. Acad. Sci.238, 700 (1954).
G. R. Sprengling undC. W. Lewis, J. Amer. Chem. Soc.75, 5709 (1953).
V. Böhmer, J. Deveaux undH. Kämmerer, Spectrochim. ActaA 28, 1977 (1972).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Böhmer, V., Wamßer, R. & Kämmerer, H. Die Dissoziationskonstanten von 2,3′-und 2,4′-Dihydroxydiphenylmethanderivaten. Monatshefte für Chemie 105, 501–509 (1974). https://doi.org/10.1007/BF00912601
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00912601