期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2007, 期 15, 页码 2438-2448出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.200601071
关键词
oxygen heterocycles; ketones; dyes; pigments; natural products; synthetic methods
Common 3-deoxyanthocyanidins and original dicationic flavylium-benzopyrylium derivatives are easily and efficiently synthesized through reactions between the corresponding phenols and aryl ethynyl ketones in the presence of aqueous hexafluorophosphoric acid. The mechanism of the reaction is discussed and two competitive pathways are consistent with our results. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim., Germany, 2007).
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