Palladium-Catalyzed Regioselective Oxidative Annulation of Cyclohexanones and 2-Aminophenyl Ketones Using Molecular Oxygen as the Sole Oxidant
作者:Wan-Lu Mu、Meirong Wang、Hui-Jing Li、Deng-Ming Huang、Yi-Yun Zhang、Chao-Yi Li、Ying Liu、Yan-Chao Wu
DOI:10.1002/adsc.201700715
日期:2017.12.11
A facile oxidative annulation of cyclohexanones and 2‐aminophenyl ketones that uses molecular oxygen as the sole oxidant is described. The reaction provides a direct approach to acridines, a structural motif for a large number of fluorescent sensors, functional materials, ligands, and pharmaceuticals. In the presence of a palladium catalyst, high regioselectivity is observed when using non‐symmetric
描述了一种使用分子氧作为唯一氧化剂的环己酮和2-氨基苯基酮的简便氧化环。该反应为to啶提供了直接途径,,啶是大量荧光传感器,功能材料,配体和药物的结构基序。在钯催化剂的存在下,当使用非对称的3-取代的环己酮时,观察到了很高的区域选择性。通过使用氧气作为末端氧化还原缓和剂,填充了整体氧化还原缩合过程的电子间隙,并显着提高了反应效率。该方案具有许多优点,例如使用非危险性氧化剂和易于获得的起始原料,高区域选择性以及水是唯一的副产物。