Yates Claire R, Benítez Diego, Khan Saeed I, Stoddart J Fraser
California NanoSystems Institute and Department of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, USA.
Org Lett. 2007 Jun 21;9(13):2433-6. doi: 10.1021/ol070535y. Epub 2007 May 22.
Employing well-established template-directed protocols, which depend upon dynamic covalent, coordinative, and noncovalent chemistry for their efficient outputs, we have synthesized, in a convergent manner, Borromeates composed of three identical macrocycles which present, diagonally in pairs, six exo-bidentate bipyridyl ligands and six endo-diiminopyridyl ligands, each carrying either pentenyloxy or p-tolylpentenyloxy substituents on their 4-positions, to six zinc(II) ions.