Transformations of 1-amino-2-(3-hydroxyalk-1-ynyl)-9,10-anthraquinones in the presence of amines.

Autor:	Barabanov, I., Fedenok, L., Polyakov, N., Shvartsberg, M.
Zdroj:	Russian Chemical Bulletin; Sep2001, Vol. 50 Issue 9, p1663-1667, 5p
Abstrakt:	When heated in piperidine, 1-amino-2-(3-hydroxyalk-1-ynyl)-9,10-anthraquinones undergo cyclization into 2-(1-hydroxyalkyl)naphtho[2,3- g]indole-6,11-diones. In contrast, 1-amino-2-(3-hydroxy-3-phenylpropynyl)-9,10-anthraquinone reacts with primary and secondary amines to give the corresponding 1-amino-2-(1-amino-2-benzoylvinyl)-9,10-anthraquinones, which undergo cyclization into 4-dialkylamino- or 4-alkylamino-2-phenylnaphtho[2,3- h]quinoline-7,12-diones. Heating of the starting phenylpropynol with Et3N causes its dehydrogenation and isomerization. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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