Copper-catalyzed aerobic oxygenative cross dehydrogenative coupling of methyl ketones with para-C–H of primary anilines
作者:Xiaochen Ji、Dongdong Li、Xuan Zhou、Huawen Huang、Guo-Jun Deng
DOI:10.1039/c6gc02271e
日期:——
A novel oxygenative cross dehydrogenative coupling of methyl ketones with para-C-H of primary anilines under copper/oxygen catalytic system is discribed. This methodology features advantages including readily available starting materials, green...
One-Pot Synthesis of<i>p</i>-Amino-Substituted Unsymmetrical Benzils and Benzil Derivatives
作者:Hongjin Zhang、Xiangwei Ren、Wentao Zhao、Xiangyang Tang、Guangwei Wang
DOI:10.1002/adsc.201600389
日期:2017.2.2
An efficient iodine/copper(II) oxide co‐promoted direct oxidative coupling of anilines and methyl aryl ketones has been developed for the synthesis of p‐amino‐substituted unsymmetrical benzils and their iodo‐substituted derivatives. The chemoselectivity of the reactions can be easily controlled by adjusting the amount of iodine. This method exhibits good functional group tolerance for various substituents
A three-component coupling of tetramethylammonium pentacarbonyl(acyl)chromates, aryl iodides, and CO takes place under CO atmosphere in the presence of a catalytic amount of Pd(PPh3)4 to afford the corresponding unsymmetrical α-diketones in good yield. By performing the reaction under argon atmosphere, unsymmetrical ketones are prepared instead of α-diketones.
在 CO 气氛中,在一定量的 Pd(PPh3)4 催化下,四甲基五羰基(酰基)铬酸铵、芳基碘化物和 CO 发生三组份偶联反应,以良好的收率得到相应的非对称 α-二酮。在氩气环境下进行反应,可以制备出不对称酮,而不是 α-二酮。
Red-emissive quinoxaline-based BODIHY: Aggregation-induced emission and multi-responsive properties