CAN-mediated oxidations for the synthesis of xanthones and related products |
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| Authors: | Johnson Myron M Naidoo Jeremy M Fernandes Manuel A Mmutlane Edwin M van Otterlo Willem A L de Koning Charles B |
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| Institution: | Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, PO Wits 2050, South Africa. |
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| Abstract: | Reaction of (2,4,5-trimethoxyphenyl)(2-hydroxyphenyl)methanone with ceric ammonium nitrate furnished the xanthone, 2,3-dimethoxy-9H-xanthen-9-one. Under the same conditions the related (1,4-dimethoxynaphthalen-2-yl)(2-hydroxyphenyl)methanone resulted in the formation of 12a-methoxy-5H-benzoc]xanthenes 5,7(12aH)-dione. Other examples of this novel transformation are also outlined. |
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