An efficient Pd‐catalyzed method for C—O cross‐coupling of ketoximes and chalcone oximes with activated aryl bromides 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 oximes with activated aryl bromides and bromo‐chalcones, which has not been previously explored.

中文翻译：

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Pd催化芳基溴化物与酮肟和查耳酮肟的C-O交叉偶合轻松获得肟醚

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。