Solution and solid-state conformations of 1, 5-pyridine and 1, 5-phenanthroline-bridged p-tert-butylcalix [8] arene derivatives

…, H Vázquez-Lima, P Guadarrama, D Martínez-Otero…

Index: Hernandez, David J.; Vazquez-Lima, Hugo; Guadarrama, Patricia; Martinez-Otero, Diego; Castillo, Ivan Tetrahedron Letters, 2013 , vol. 54, # 36 p. 4930 - 4933

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Citation Number: 4

Abstract

Abstract An extension of the method for the regioselective introduction of nitrogen-containing heterocycles at the 1, 5-phenolic positions of p-tert-butylcalix [8] arene previously described for 2, 6-bis (chloromethyl) pyridine allowed the use of 2, 9-bis (bromomethyl)-1, 10- phenanthroline as a selective 1, 5-dialkylating agent. The 1, 5-dimethylpyridine derivative was previously characterized as a relatively rigid dicesium complex [1 (4H) 2−· 2Cs+], its ...