Tetrahedron letters

Synthesis of a new calix [n] pyrrole: meso-pentaspirocyclohexyl calix [5] pyrrole

…, CA Contreras-Celedón, J Campos-García

Index: Bedolla-Medrano, Mercedes; Chacon-Garcia, Luis; Contreras-Celedon, Claudia A.; Campos-Garcia, Jesus Tetrahedron Letters, 2011 , vol. 52, # 1 p. 136 - 138

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Citation Number: 6

Abstract

We describe the first synthesis of the novel meso-pentaspirocyclohexyl calix [5] pyrrole 2b. Anion–guest properties of the new compound were evaluated with respect to fluoride, chloride, and bromide tetrabutylammonium salts by 1H NMR titration techniques in deuterated dichloromethane at 22° C by following the induced shifts in the NH resonances upon complexation.