Synthesis of novel chiral tetraaza ligands and their application in enantioselective transfer hydrogenation of ketones |
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| Authors: | Shen Luan Yu Yan Yun Li Zhen Rong Dong Jing Xing Gao State |
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| Institution: | State Key Laboratory of Physical Chemistry of Solid Surfaces, National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China |
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| Abstract: | Novel chiral tetraaza ligands(R)-N,N′-bis2-(piperidin-1-yl)benzylidene]propane-l,2-diamine 6 and(S)-N-2-(piperidin-l- yl)benzylidene]-3-{2-(piperidin-1-yl)benzylidene]amino}-alanine sodium salt 7 have been synthesized and fully characterized by NMR,IR,MS and CD spectra.The catalytic property of the ligands was investigated in Ir-catalyzed enantioselective transfer hydrogenation of ketones.The corresponding optical active alcohols were obtained with high yields and moderate ees under mild reaction conditions. |
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| Keywords: | Asymmetric catalysis Indium Ketones Tetraaza ligand Asymmetric transfer hydrogenation |
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