Crystal Structures and Reactivity of 3a,5a,8a,10a-Tetraazaperhydropyrene Derivatives. An Alternative Approach to Selective Nitrogen Alkylation of 1,4,8,11-Tetraazacyclotetradecane (Cyclam)
The reaction of N,N'-bis(3-aminopropyl) ethylenediamine (1) with glyoxal (2) in the presence of benzotriazole (3) afforded dibenzotriazoyltetraazaperhydropyrene (4), which was converted to polyazapolycycles (6), (13), (15), (16), and (19). The stereochemistry is discussed.
Quarternäre polycyclische Polyammoniumsalze und Verfahren zu deren Herstellung