An Easy Access to Oxime Ethers by
<scp>Pd‐Catalyzed</scp>
C—O
<scp>Cross‐Coupling</scp>
of Activated Aryl Bromides with Ketoximes and Chalcone Oximes
作者:Reeta、T. M. Rangarajan、Raj Pal Singh、R. P. Singh、Manjula Singh
DOI:10.1002/cjoc.201900540
日期:2020.8
An efficient Pd‐catalyzed method for C—O cross‐coupling of ketoximes and chalcone oximes with activated arylbromides and bromo‐chalcones has been developed. All oxime ethers were obtained in good to excellent yields by [(π‐allyl)PdCl]2/t BuXPhos (L7 ) catalyst system. TrixiePhos (L11 ) was also found to be effective for the oxime coupling. This method offers an easy and smooth coupling of chalcone
已经开发了一种有效的钯催化的方法,用于酮肟和查尔酮肟与活化的芳基溴化物和溴代查耳酮的C-O交叉偶联。通过[(π-烯丙基)PdCl] 2 / t BuXPhos(L7)催化剂体系可以很好地获得所有肟醚。还发现TrixiePhos(L11)对于肟耦合有效。该方法提供了查耳酮肟与活化的芳基溴化物和溴查耳酮的轻松,平滑的偶联,这是以前没有探索过的。
Synthesis of New C-C Linked Bichalcones and Their Antimicrobial and Antioxidant Activities