Journal
RUSSIAN CHEMICAL BULLETIN
Volume 53, Issue 12, Pages 2798-2804Publisher
SPRINGER
DOI: 10.1007/s11172-005-0193-8
Keywords
anthraquinones; anthra[1,2-h]pyrantriones; anthra[1,2-b]furandiones; heterocyclization; alkynones; enamines; iodination
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Procedures were developed for the heterocyclization of 2-benzoylethynyl-1-hydroxy- and 1-hydroxy-2-(1-oxo-3-phenylpropynyl)anthraquinone. The regioselective preparation of 2-substituted anthra [1,2-b] pyran-4,7,12-triones was demonstrated to be possible under mild conditions.
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