Visible-Light-Induced Aerobic Oxidation of Benzylic C(sp3)–H of Alkylarenes Promoted by DDQ, tert-Butyl Nitrite, and Acetic Acid
作者:Zhenlu Shen、Decheng Pan、Yiqing Wang、Meichao Li、Xinquan Hu、Nan Sun、Liqun Jin、Baoxiang Hu
DOI:10.1055/s-0037-1610678
日期:2019.1
photocatalytic aerobic oxidation of benzylic C(sp3)–H bonds proceeded in the presence of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone, tert-butyl nitrite, and acetic acid. Advantages of this aerobic oxidation method include its relatively mild conditions, the use of visible-light irradiation instead of conventional thermal methods, the use of a low catalyst loading, and the ability to oxidize a range of alkylarenes
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。