Abstract
The corresponding 2-(o-hydroxystyryl)benzimidazoles were obtained by the condensation of aromatic o-hydroxyaldehydes with 5-nitro- and 5,6-dinitro-1,2,3-trimethylbenzimidazolium salts. It was established that derivatives of salicylaldehyde and 5-methoxysalicylaldehyde are capable of intramolecular cyclization in absolute, aprotic solvents to form spiro (benzimidazoline-2,2′-[2H]chromene) derivatives.
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L. S. Éfros, É. R. Zakhs, and N. K. Beresneva, Khim. Geterotsikl. Soedin., 1004 (1970).
Australian Patent No. 62, 296 (1960); British Patent No. 889, 196 (1962).
R. Guglielmetti and J. Metzger, Bull. Soc. Chim. France, 3329 (1969).
A. I. Kipriyanov, Usp. Khim., 29, 1337 (1960).
E. Kosower, J. Am. Chem. Soc., 80, 3253 (1958).
Handbook of Chemistry, Vol. 3 [in Russian], Khimiya (1964), pp. 959, 962.
I. Ya. Pavlenishvili, Author's Abstract of Dissertation [in Russian], Tbilisi (1970).
G. Arnold and G. Paal, Tetrahedron., 25, 5995 (1969).
K. Fries, E. Modrow, B. Racke, and K. Weber, Ann., 454, 216 (1927).
T. Momai, H. Higurashi, M. Abe, and D. Mizuno, Yakugaku Zasshi, 78, 242 (1958); Chem. Abstr., 52, 11, 822b (1958).
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 961–966, July, 1971.
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Beresneva, N.K., Zakhs, É.R. & Éfros, L.S. Products of the condensation of 5-nitro- and 5,6-dinitro-1,2,3-trimethylbenzimidazolium salts with o-hydroxyaldehydes. Chem Heterocycl Compd 7, 897–902 (1971). https://doi.org/10.1007/BF00475721
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DOI: https://doi.org/10.1007/BF00475721