Collect. Czech. Chem. Commun. 1999, 64, 73-88

Synthesis and Structure of Noncoordinated Curtis Macrocycle as a Free Base and Dihydrobromide Dihydrate

Jan Rohovec, Pavel Vojtíšek and Ivan Lukeš*

Department of Inorganic Chemistry, Charles University, Hlavova 2030, 128 40 Prague 2, Czech Republic


5,7,7,12,14,14-Hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene (1) (Curtis macrocycle) was synthesized and studied by X-ray diffraction and NMR spectroscopy. In addition, a product of its decomposition 5,7,7-trimethyl-2,3,6,7-tetrahydro-1,4-diazepine (2) was found and identified by NMR spectroscopy. The X-ray structure of 1·H2O and 1·2 HBr·2 H2O is given.

Keywords: Curtis macrocycle; Tetraazacyclotetradecadiene; Template synthesis; NMR spectroscopy; IR spectroscopy; X-Ray diffraction; Polyazamacrocyclic compounds; Azacrown compounds.