期刊
CHEMICAL COMMUNICATIONS
卷 56, 期 17, 页码 2606-2609出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9cc09945j
关键词
-
资金
- National Science Centre (NSC) Poland [665778, 2016/21/P/ST5/00630]
In this work we highlight two new methods for the synthesis of isoflavones through consecutive domino arylation of ortho-hydroxyarylenaminones with in situ photogenerated aryl radicals. As precursors for aryl radicals we used aryl onium reagents such as diazonium and diaryliodonium salts. Notably, the photo-Meerwein arylation by aryl diazonium tetrafluoroborates demonstrated high efficiency in terms of yields and can be considered as a method of choice for the straightforward assembly of 3-aryl-substituted chromones. Ultimately, 26 compounds were prepared in good to excellent yields using the developed synthetic protocols.
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