Unprecedented ortho-acylation of azoxybenzenes with α-oxocarboxylic acids by Pd-catalyzed C–H activation and decarboxylation
作者:Hongji Li、Pinhua Li、Qiong Zhao、Lei Wang
DOI:10.1039/c3cc45492d
日期:——
A palladium-catalyzed ortho-acylation reaction of azoxybenzenes with α-oxocarboxylic acids was developed in the presence of K2S2O8. The established methodology provides a direct approach to obtain acylated azoxybenzenes in good yields.
Palladium-catalyzed direct ortho-ethoxycarbonylation of azobenzenes and azoxybenzenes with diethyl azodicarboxylate
作者:Ning Xu、Dengke Li、Yicheng Zhang、Lei Wang
DOI:10.1039/c5ob01264c
日期:——
A palladium-catalyzed direct ortho-ethoxycarbonylation of azobenzenes and azoxybenzenes with diethyl azodicarboxylate (DEAD) was developed under mild reaction conditions.
Merging Visible-Light Photocatalysis and Palladium Catalysis for C−H Acylation of Azo- and Azoxybenzenes with α-Keto Acids
作者:Ning Xu、Pinhua Li、Zuguang Xie、Lei Wang
DOI:10.1002/chem.201504530
日期:2016.2.12
efficient C−H acylation of azo‐ and azoxybenzenes with α‐keto acids has been developed by a combination of palladium catalysis and visible‐light photoredox catalysis at room temperature under 1.5 W blue LED irradiation. This method tolerates a variety of disubstituted azo‐ and azoxybenzenes, as well as α‐keto acids regardless of the nature of the substituents. A number of aryl ketones were obtained