期刊
TETRAHEDRON
卷 74, 期 39, 页码 5715-5724出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2018.08.007
关键词
Xanthone synthesis; 2-(1,2-dichlorovinyloxy) aryl dienones; Intramolecular Diels Alder reaction
A wide array of synthetic methods are described in the literature for the preparation of xanthones a prominent class of tricyclic molecules that occur widely in nature. Majority of these reported methods involve linking the two aromatic rings and forming the central pyrone ring using a variety of classical and non-classical cyclization strategies. In a conceptually different approach, we describe here a new xanthone synthesis wherein both the pyrone and the second aromatic rings were forged in a single step by an intramolecular cycloaddition reaction involving 2-(1,2-dichlorovinyloxy) aryldienones. (C) 2018 Elsevier Ltd. All rights reserved.
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