2839-49-8Relevant articles and documents
Palladium-catalyzed oxidative double C-H functionalization/carbonylation for the synthesis of xanthones
Zhang, Hua,Shi, Renyi,Gan, Pei,Liu, Chao,Ding, Anxing,Wang, Qiuyi,Lei, Aiwen
, p. 5204 - 5207 (2012)
Two at once: Xanthones with different functional groups were obtained with CO (balloon) in the presence of a simple catalytic system that consists of Pd(OAc)2, K2S2O8, and trifluoroacetic acid (see scheme). Preliminary mechanism studies reveal that the second C-H functionalization might be the rate-determining step. Copyright
Synthesis of xanthones, thioxanthones and Acridones by a metal-free photocatalytic oxidation using visible light and molecular oxygen
Chinchilla, Rafael,Torregrosa-Chinillach, Alejandro
, (2021/06/12)
9H-Xanthenes, 9H-thioxanthenes and 9,10-dihydroacridines can be easily oxidized to the corresponding xanthones, thioxanthones and acridones, respectively, by a simple photo-oxidation procedure carried out using molecular oxygen as oxidant under the irradiation of visible blue light and in the presence of riboflavin tetraacetate as a metal-free photocatalyst. The obtained yields are high or quantitative.
Ultraviolet light promoted synthesis method of xanthone compounds
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Paragraph 0043; 0044, (2020/05/05)
The invention discloses an ultraviolet light promoted synthesis method of a xanthone compound. The method comprises the steps: by taking a xanthene compound as a reaction substrate and oxygen in air as an oxidant, carrying out a reaction on the reaction substrate in an organic solvent at normal temperature under the condition of 380-385 nm ultraviolet irradiation, and after the reaction is finished, carrying out separation treatment to obtain the xanthone compound. According to the synthesis method disclosed by the invention, a traditional heating reaction is replaced by an illumination reaction, so that energy sources can be saved; no catalyst is used.