Tetrahedron

Synthesis and conformational aspects of 20-and 40-membered macrocyclic mono and dinuclear uranyl complexes incorporating salen and (R)-BINOL units

…, FP Ballistreri, A Pappalardo, D Sciotto, GA Tomaselli…

Index: Amato, Maria E.; Ballistreri, Francesco P.; Pappalardo, Andrea; Sciotto, Domenico; Tomaselli, Gaetano A.; Toscano, Rosa Maria Tetrahedron, 2007 , vol. 63, # 39 p. 9751 - 9757

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Citation Number: 26

Abstract

20-and 40-membered macrocyclic mono and dinuclear uranyl complexes 11–13 incorporating salen and (R)-BINOL units have been designed and synthesized starting from 4-tert-butylphenol in eight steps. NMR measurements (COSY, NOESY/EXSY) indicate that such complexes in solution are involved in conformational equilibria, which for the 20- membered derivatives are observable already at room temperature (k1= 300s− 1 at 300K) ...

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