Examples of regioselective anion recognition among a family of two-, three-, and four-"armed" bis-, tris-, and tetrakis(thioureido) [n]polynorbornane hosts.


A family of conformationally preorganized, [n]polynorbornane-based anion hosts 1a,b-6a,b have been synthesized. The series includes receptors with 4, 8, and 12 H-bond donors. Using (1)H NMR titration techniques, evaluation of the new hosts against a series of alkyl and aryl dicarboxylates as well as a range of phosphoanionic species has revealed that the… (More)
DOI: 10.1021/jo301450b


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