6533b86ffe1ef96bd12ce6a9
RESEARCH PRODUCT
Areno-Condensed 1,7,13-Triaza[18]annulenes
Christoph SchnorpfeilMichael FettenSabine HinneschiedtHerbert Meiersubject
ChemistryOrganic ChemistryCondensationchemistry.chemical_elementProtonationAnnuleneCondensation reactionRing (chemistry)PhotochemistryNitrogenIonPolymer chemistryAlkoxy groupPhysical and Theoretical Chemistrydescription
The 1,7,13-triaza[18]annulenes 9a−c were prepared by multi-step processes in which the final step consisted of a threefold cyclic condensation reaction of the Schiff bases 8a−c. Due to the length of the nine peripheral alkoxy chains, discotic liquid crystalline phases were obtained for 9b,c. The three nitrogen atoms in the central 18-membered ring not only permit protonation, but they can also serve for the complexation of NH4+ ions. The compounds 9a−c are highly photosensitive and exhibit crosslinking reactions on irradiation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-02-01 | European Journal of Organic Chemistry |