Bull. Russ. Acad. Sci. Div. Chem. Sci. (Engl. Transl.) p. 1672 - 1679 (1992)
Update date:2022-08-04
Topics:
Ivanchikova, I. D.
Usubalieva, G. E.
Schastnev, P. V.
Moroz, A. A.
Shvartsberg, M. S.
The Cu(I)-catalyzed intramolecular cyclization of 1-phenylethynyl- and 1-hexyn-1-yl-anthraquinone-2-carboxylic acid is a 6-endo-dig-addition, whereas the reaction for 1-(3-phenoxypropyn-1-yl)anthraquinone-2-carboxylic acid proceeds in a directionally nonspecific way.It is shown that the cyclization of vicinal acetylenic derivatives of aromatic carboxylic acids leads to the formation of the more stable of the possible cyclic structures. Keywords: 1-phenylethynylanthraquinone-2-carboxylic acid, 1-hexyn-1-yl-anthraquinone-2-carboxylic acid, 1-(3-phenoxypropyn-1-yl)anthraquinone-2-carboxylic acid, intramolecular cyclization, MNDO calculation method.
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