期刊
TETRAHEDRON
卷 68, 期 2, 页码 711-721出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2011.10.095
关键词
Catalysis; Thioxanthones; Palladium; Suzuki-Miyaura reaction; Regioselectivity
资金
- DAAD
The palladium(0)-catalyzed Suzuki cross-coupling reactions of the bis(triflates) of 1,3- and 1,4dihydroxythioxanthone afforded various aryl-substituted thioxanthones. While the Suzuki reactions of the bis(triflate) derived from 1,3-dihydroxythioxanthone proceeded by site-selective attack in favor of position 3, the reactions of the bis(triflate) of 1,4-dihydroxythioxanthone proceeded in favor of position 1. The site-selectivity is controlled by steric and electronic parameters. (C) 2011 Elsevier Ltd. All rights
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