Synthesis of Xanthones, Thioxanthones, and Acridones by the Coupling of Arynes and Substituted Benzoates
作者:Jian Zhao、Richard C. Larock
DOI:10.1021/jo0620718
日期:2007.1.1
The reaction of silylaryl triflates, CsF, and ortho-heteroatom-substituted benzoates affords a general and efficient way to prepare biologically interesting xanthones, thioxanthones, and acridones. This chemistry presumably proceeds by a tandem intermolecular nucleophilic coupling of the benzoate with an aryne and a subsequent intramolecular electrophilic cyclization.
Copper-Catalyzed Intramolecular Oxidative CH Functionalization and CN Formation of 2-Aminobenzophenones: Unusual Pseudo-1,2-Shift of the Substituent on the Aryl Ring
A good move: A copper‐catalyzed intramolecular oxidative CH functionalization of 2‐aminobenzophenone affords two regioisomeric acridones (see scheme). The reaction involves an unusual pseudo‐1,2‐migration of R2 group(s) on the arene ring (bpy=2,2′‐bipyridine, DMAc=dimethylacetimide).
Synthesis of acridones through palladium-catalyzed carbonylative of 2-bromo-diarylamines
作者:Juan Song、Keran Ding、Wei Sun、Songjiang Wang、Haisen Sun、Kang Xiao、Yan Qian、Chao Liu
DOI:10.1016/j.tetlet.2018.06.004
日期:2018.7
A facile protocol for the synthesis of acridone derivatives has been developed throughpalladium-catalyzedcarbonylation/CH activation sequence from 2-bromo-diarylamines in moderate to excellent yields. The reactions occurred smoothly and allowed both electron-rich and electron-deficient substrates converted to the corresponding acridones.
通过钯催化的2-溴-二芳基胺的钯催化羰基化/ C H活化序列,已经开发了一种简便的合成cri啶酮衍生物的方案,产率中等至优异。反应平稳进行,并使富电子和缺电子的底物均转化为相应的cri啶。
Synthesis of 10-Methylacridin-9(10<i>H</i>)-ones through Cu-Catalyzed Intramolecular Oxidative C(sp<sup>2</sup>)-H Amination of 2-(Methylamino)benzophenones
An efficient synthesis of a diverse set of 10-methylacridin-9(10H)-ones from 2-(methylamino)benzophenones has been developed. The reaction proceeds though Cu-catalyzed intramolecular aromatic C–H amination by using O2 as the sole oxidant to provide the desired products in moderate to good yields. In addition, 2-allylamino- and 2-(benzylamino)benzophenones as well as unprotected substrates can also