Synthesis of arylated xanthones by site-selective Suzuki–Miyaura reactions of the bis(triflate) of 1,3-dihydroxyxanthone
作者:Omer A. Akrawi、Hamid H. Mohammed、Tamás Patonay、Alexander Villinger、Peter Langer
DOI:10.1016/j.tet.2012.05.046
日期:2012.8
Arylated xanthones were prepared by site-selective Suzuki–Miyaura reactions of the bis(triflate) of 1,3-dihydroxyxanthone. The first attack occurs at the sterically less encumbered position 3. The site-selectivity is in contrast to the bis(triflate) of 1,3-dihydroxyanthraquinone.
通过1,3-二羟基黄酮的双(triflate)的定点Suzuki-Miyaura反应制备了丙烯酸化的氧杂蒽酮。第一次攻击发生在空间较少的位置3。位点选择性与1,3-二羟基蒽醌的双(三氟甲磺酸酯)相反。