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。
Ligand Controlled Regiodivergent C
<sub>1</sub>
Insertion on Arynes for Construction of Phenanthridinone and Acridone Alkaloids
palladium‐catalyzed regiodivergent C1 insertion multicomponent reaction involving aryne, CO, and 2‐iodoaniline is established to construct the scaffolds of phenanthridinone and acridonealkaloids. Regioselective control is achieved under the guidance of selective ligands. The phenanthridinones are solely obtained under ligand‐free condition. In comparison, application of the electron‐abundant bidentate ligand dppm