Synthesis of a Pyridinophane with endo-Annular Donor Sites

Katie Campbell; Natasha M. Tiemstra; Natasha S. Prepas-Strobeck; Robert McDonald; Michael J. Ferguson; Rik R. Tykwinski

doi:10.1055/s-2003-43346

CLUSTER

Synthesis of a Pyridinophane with endo-Annular Donor Sites

Katie Campbell^a, Natasha M. Tiemstra^a, Natasha S. Prepas-Strobeck^a, Robert McDonald^b, Michael J. Ferguson^b, Rik R. Tykwinski*^a
^a Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
^b X-ray Crystallography Laboratory, Department of Chemistry, University of Alberta, Canada
Fax: +1(780)4928231; e-Mail: rik.tykwinski@ualberta.ca;

Abstract

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Abstract

Our synthetic efforts toward the realization of cross-conjugated macrocycles containing 2,6-diethynylpyridine sub-units are described. Macrocycle 4b was efficiently constructed from easily accessible building blocks using a series of palladium-catalyzed cross-coupling and copper-catalyzed homocoupling reactions. The synthesis, characterization and solid state characteristics of this macrocycle, as well as its precursors are provided in the discussion that follows.

Key words

alkynes - cross-conjugation - cross-coupling - homocoupling - macrocycles - pyridines

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References

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