Macrocycle or Cage? The Presence or Absence of Ca2+ Template Ions Controls the Equilibrium in an Oligoimine Dynamic Combinatorial Library
作者:Frank Schleef、Ulrich Lüning
DOI:10.1002/ejoc.201001658
日期:2011.4
A dynamic combinatoriallibrary (DCL) was formed by mixing the triamine 1 and the diamine 3 with the pyridine-2,6-dicarbaldehyde 2 (R = OMe). In the absence of any template ion, the bimacrocyclic cage 4 (R = OMe) derived from the triamine 1 formed nicely whereas the monomacrocycle 5 (R = OMe) originating from the diamine 3 was only formed in small amounts (product ratio, after reduction: [6]/[7] =