Identification of novel chiral aluminium containing oxonium cations in the enantioselective hydrogenation of ethyl pyruvate catalyzed using cinchonidine modified Pt-alumina in acetic acid

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• 作者：Imre Bucsi ; Gy?rgy Sz?ll?si ; Tibor Bart¨®k and Mih¨¢ly Bart¨®k
• 关键词：enantioselective ; Hydrogenation ; Pt ; alumina ; oxonium cations ; chirality ; ESI ; ion ; trap ; mass spectrometry
• 刊名：Reaction Kinetics and Catalysis Letters
• 出版年：2005
• 出版时间：July 2005
• 年：2005
• 卷：85
• 期：2
• 页码：361-366
• 全文大小：72 KB

文摘

The first identification of aluminium containing oxonium cations having chiral atomic groups is described which may play a role in enantioselective hydrogenation of ethyl pyruvate using Pt-alumina catalyst in AcOH. The structure these cations at m/z = 509 and m/z = 567 is: [O{Al(OAc)₂}₂Al(OPy.OLt)]+ and [O(AlOAc.OLt)₂Al(OPy)₂]+