POLYCYCLIC POLYAMINES: SYNTHESIS AND CONFORMATIONAL ANALYSIS

<p>The synthesis, conformational analysis, and reactivity of a homologous series of tricyclic orthoamides is discussed. The tricyclic orthoformamides, orthoacetamides, orthopropionamides, and orthobenzamides were synthesized by the uncatalyzed condensation of macrocyclic triamines with amide acetals. The conformations were studied spectrally (IR, ('1)H NMR, ('13)C NMR, DNMR) and by the application of empirical force field calculations (MM2). In most (but not all) cases the minimized conformations as generated by MM2 were found to be in agreement with the experimentally determined conformations. The alkylation, acylation, and hydrolysis of these compounds is also discussed.</p><p>Efforts towards the synthesis of the spherically shaped host molecule 1,5,9,13,-tetraazatricyclo{7.7.3.3('5,13)}-docosane are described. A classical acylation-reduction sequence was employed in this synthesis. Cyclizations were carried out under high dilution conditions. The design and construction of a new high dilution apparatus is described. High yields of monomeric cyclic intermediates were obtained. Monomeric cyclic intermediates were purified by preparative gel permeation chromatography (GPC). The modification of a Waters 200 analytical GPC unit are described as are the column packing procedures for preparative GPC columns.</p>

Name thesis:degree_name

Doctor of Philosophy

Level thesis:degree_level

Dissertation

Year

1982

Author dc:creator

• JOHNSON, VAN BRUCE

• Chemistry
• Organic

Repository record dc:identifier

https://scholars.unh.edu/dissertation/1318

OAI identifier oai:identifier

oai:scholars.unh.edu:dissertation-2317