Palladium-Catalyzed α-Ketone Arylation under Mild Conditions
作者:Changsheng Cao、Lingling Wang、Zhengyuan Cai、Lingqiao Zhang、Jin Guo、Guangsheng Pang、Yanhui Shi
DOI:10.1002/ejoc.201001428
日期:2011.3
α-arylation of ketones with aryl halides catalyzed by the easily prepared and air-stable palladium complex (SIPr)-Pd(Py)Cl 2 (3) is described. Complex 3 displays high activity for a variety of aryl halides (activated, unactivated, and sterically hindered aryl halides) under mild conditions. Moreover, both aryl and alkyl ketones can be arylated. The α-arylation of somealkyl ketones can even be run at room
Carbene adduct of cyclopalladatedferrocenylimine exhibited highly catalytic activity for the α-arylation of ketones with aryl halides. The corresponding products were obtained in moderate to excellent yields. Such protocol was applied to various ketones and a broad scope of aryl halides including aryl chlorides, bromides as well as unactivated and sterically hindered aryl halides.
H<sub>2</sub>O<sub>2</sub>-mediated room temperature synthesis of 2-arylacetophenones from arylhydrazines and vinyl azides in water
作者:Mengqiang Luo、Yaohong Zhang、Ping Fang、Yan Li、Chenze Qi、Yong Li、Runpu Shen、Kai Cheng、Hai Wang
DOI:10.1039/d1ob02023d
日期:——
practical methodology for the roomtemperaturesynthesis of 2-arylacetophenones in water has been discovered. The facile and efficient transformation involves the oxidative radical addition of arylhydrazines with α-aryl vinyl azides in the presence of H2O2 (as a radical initiator) and PEG-800 (as a phase-transfer catalyst). From the viewpoint of green chemistry and organic synthesis, the present protocol is
已经发现了一种用于在水中室温合成 2-芳基苯乙酮的环境友好、经济高效且实用的方法。简便有效的转化涉及芳基肼与 α-芳基乙烯基叠氮化物在 H 2 O 2(作为自由基引发剂)和 PEG-800(作为相转移催化剂)存在下的氧化自由基加成。从绿色化学和有机合成的角度来看,本协议具有重要意义,因为它使用了廉价、无毒且易于获得的起始材料和试剂,并且易于进行克级合成,这为获取 2 提供了有吸引力的策略-芳基苯乙酮。
[EN] ACRYLAMIDE COMPOUNDS AND THE USE THEREOF<br/>[FR] COMPOSÉS ACRYLAMIDES ET LEUR UTILISATION
申请人:SHIONOGI & CO
公开号:WO2010114181A1
公开(公告)日:2010-10-07
The invention relates to acrylamide compounds of Formula I mentioned below. The invention is also directed to the use compounds of Formula I to treat or prevent a disorder responsive to the blockade of calcium channels, and particularly N-type calcium channels. Compounds of the present invention are especially useful for treating pain.