Ceric Ammonium Sulfate (CAS) Mediated Oxidations of Benzophenones Possessing a Phenolic Substituent for the Synthesis of Xanthones and Related Products
作者:Jean Dam、Moira L. Bode、Charles B. de Koning
DOI:10.1021/acs.joc.8b02503
日期:2019.1.4
Work previously published by our group described novel methodology for the synthesis of xanthones and related products from phenolic benzophenones in a reaction mediated by ceric ammonium sulfate (CAS). In this paper we further explore this novel reaction by subjecting an additional set of phenolic benzophenones to CAS to afford a range of compounds, including xanthones, 9H-xanthen-2,9(4aH)-diones
我们小组先前发表的工作描述了在硫酸铈铵(CAS)介导的反应中,从酚类二苯甲酮合成氧杂蒽酮和相关产物的新方法。在本文中,我们通过对另一组酚二苯甲酮进行CAS反应,以提供一系列化合物,包括x吨,9 H -xanthen-2,9(4a H)-二酮,3 H-螺[苯并呋喃],来进一步探索这一新颖的反应。-2,1'-环己[2,5]二烯] -3,4'-二酮和联芳基化合物。还对这些反应与更常用的氧化剂硝酸硝酸铈铵(CAN)进行了比较。基于这些结果,已经获得了对反应机理的更深入的了解。另外,合成的黄嘌呤-2,9(4a H描述了通过用连二亚硫酸钠处理生成二氧杂蒽的-二酮。