Synthesis of Unsubstituted and 4,4?-Substituted Oligobipyridines as Ligand Strands for Helicate Self-Assembly
作者:Margaret M. Harding、Ulrich Koert、Jean-Marie Lehn、Annie Marquis-Rigault、Claude Piguet、Jay Siegel
DOI:10.1002/hlca.19910740317
日期:1991.5.2
A general strategy for the synthesis of oligobipyridineligands 2–5 containing from two to five 2,2′-bipyridine subunits, for helical metal complexes is described (sec Scheme). Both the unsubstituted parent strands (a series) as well as their derivatives bearing fester or amide functions in the 4,4′-positions of the bipyridine moieties (b–d series) have been obtained.