1,8-Pyrenylene−Ethynylene Macrocycles
dataset
posted on 2011-05-06, 00:00 authored by Gandikota Venkataramana, Prateek Dongare, Louise N. Dawe, David W. Thompson, Yuming Zhao, Graham J. BodwellA concise, highly regioselective synthesis of 1,8-dibromo-4,5-dialkoxypyrenes has been developed and exploited in the synthesis of some 1,8-pyrenylene−ethynylene macrocycles. The 1H NMR data and NICS calculations indicate that there is little or no macrocyclic ring current. Concentration-dependent UV−visible studies indicate no aggregation at low concentration, but 8b forms dimers with voids suitable for intercalation of small molecules in the solid state.
