Podand-Based Chiral Supramolecular Catalytic Systems: From Metallacrown Ether to Cooperative Catalys

来源 :手性中国2014学术研讨会 | 被引量 : 0次 | 上传用户:JK0803_zouzhi
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Podands, a term coined by V(o)gtle and Weber in 1979,[1] refer to the acyclic supramolecular hosts which containing a polyether backbone and two terminal groups.Like their cyclic counterparts, podands can form curled rigid conformations by the association with a suitable metal cation.The terminal groups are thus brought close, significantly increasing their interactions.[2] Despite achievements in allosteric systems and responsive materials, the applications of podands in catalysis are rarely reported,[3] especially for asymmetric catalysis.
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