Ruthenium(II) pincer complexes with oxazoline arms for efficient transfer hydrogenation reactions

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• 作者：Tao Chen ; Li-Peng He ; Dirong Gong ; Limin Yang ; Xiaohe Miao ; J?rg Eppinger ; Kuo-Wei Huang
• 关键词：Ruthenium ; Pincer ; Catalysis ; Transfer hydrogenation
• 刊名：Tetrahedron Letters
• 出版年：2012
• 出版时间：15 August, 2012
• 年：2012
• 卷：53
• 期：33
• 页码：4409-4412
• 全文大小：576 K

文摘

Well-defined P^NN^CN pincer ruthenium complexes bearing both strong phosphine and weak oxazoline donors were developed. These easily accessible complexes exhibit significantly better catalytic activity in transfer hydrogenation of ketones compared to their PN³P analogs. These reactions proceed under mild and base-free conditions via protonation-deprotonation of the ¡®NH¡¯ group in the aromatization-dearomatization process.