Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"polycycles"”.
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Stress relief: Exercising Lewis acid catalysis for donor-acceptor cyclopropane ring-opening annulations, a basis for new reaction methodologies
… formation. In order to assemble diverse polycycles, donor-acceptor cyclopropanes are useful, versatile synthetic equivalents for C-C bond formations. By taking advantage of the strain within these unique, polarized systems, differing molecular architectures can be accessed directly to …
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Reactivity of Aluminum Carbenoid with Unsaturated Substrates
… that the reaction proceeds via dissociation of polycycles with the release of NacNacAl that undergoes further intermolecular transformations. All novel complexes were characterized by spectroscopic methods and X-ray diffraction analysis for most of them.
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BORAHETEROHELICENES: SYNTHETIC METHODOLOGIES AND PROPERTIES OF A NOVEL CLASS OF BORON Π-CONJUGATED SYSTEMS
… which are screw-shaped inherently chiral polycycles, formed by ortho-fused aromatic or heteroaromatic rings. The presence of a helical structure in B-PAHs is expected to strongly influence their physico-chemical properties leading to compounds characterized by peculiar features promising …
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A Diversity-Oriented Synthesis Approach to Functionalized Azaheterocycles using Cyclic Alpha-Halo Eneformamides
Functionalized piperidines, azepanes, azamacrocycles, morpholines, and thiomorpholines are common structural motifs found in a wide range of pharmaceuticals such as carmegliptine, levofloxacin, thioridazine, claviciptic acid, and azithomycin. As a result, there is a strong desire to construct …