500286-36-2Relevant articles and documents
Synthesis of xanthones from 4-(2-phenoxyphenyl)-1-tosyl-1H-1,2,3-triazole via rhodium-catalyzed annulation/oxidation
Anna,Chen, Zhaohang,Gao, Juanhong,Li, Chao,Qiao, Hongwei,Zhu, Mengyao
, (2021/10/19)
A series of xanthone derivatives were synthesized by rhodium-catalyzed cycloaddition and sequential oxidation. The derivatives synthesized for excellent yields, including electron-withdrawing and electron-donating substituents, demonstrated the wide applicability of the proposed approach. The xanthones synthesized with different substituent electron effects may go through the same intermediate via two cycloadditions. It is highlighted that the protocol was exemplified by its successful integration into a one-pot synthesis directly from 1-ethynyl-2-phenoxybenzene. We believe that the current method may be an attractive option for the synthesis of xanthone and its derivatives.
Anthraquinone general formula compound and application thereof
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Paragraph 0046; 0048; 0053-0054, (2019/11/14)
The invention discloses an anthraquinone general formula compound and application thereof. The general formula compound is shown in a formula in the specification, in the formula, Y represents an oxygen atom or a sulfur atom, X1 to X8 represent C, CR or N
Cu(0)/Selectfluor system-catalyzed intramolecular Csp2-H/Csp2-H cross-dehydrogenative coupling (CDC)
Bao, Hanyang,Hu, Xiaojun,Zhang, Jian,Liu, Yunkui
, (2019/09/30)
A Cu(0)/Selectfluor system-catalyzed intramolecular Csp2-H/Csp2-H bond cross-dehydrogenative coupling of 2-aryloxybenzaldehydes is described. A variety of substituted xanthone derivatives are synthesized in moderate to excellent yields. Reaction can also be extended to the synthesis of 9H-thioxanthen-9-one 10,10-dioxide and phenanthridin-6(5H)-ones, respectively.