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Research on the Synthesis and Structure of Unsymmetrical Macrocyclic Compounds

Author: LiMei
Tutor: WenZuo
School: East China Normal University
Course: Genomics
Keywords: Supramolecular Calixarene Macrocyclic compounds
CLC: O621.3
Type: Master's thesis
Year: 2011
Downloads: 30
Quote: 0
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Abstract


That nature has evolved a large number of highly specific, selective and synergistic chemical system. These chemical system can be regarded as a good supramolecular systems: These supramolecular the main body of the enzyme gene, the immune system's antibodies and the acceptance of the ionophore loci. The object is a substrate, inhibitor, ancillary drugs or antigen. Currently, it has been a considerable amount of supramolecular research work, attempts to simulate a biological process, for example, Organic Chemistry in the enzyme-catalyzed reaction, or a metal cation and the substrate stars such as oxygen transmission. In recent years, supramolecular macrocyclic chemistry-based rapid development of chemistry and synthetic chemistry, life sciences, new materials, new technology development, it is closely related to. The design and synthesis of host molecules in supramolecular systems has been an important part of the study area. The scope of the study of the main compound molecules are relatively concentrated in a few compounds, by many restrictions. Specific guest molecules (ions) in order to reach the the complexation (capture), the design and synthesis of new types of host molecules containing multiple recognition sites is necessary, and has a good space for development and application prospects. This paper studies the types of \Known heteroatom bridged calixarene structure analysis, we design and synthesis of a new class of asymmetric neighbor oxygen heterocyclic bridge calixarene compounds. And discussed the synthesis conditions of the different compounds. Catechol, resorcinol, hydroquinone and dichloro-substituted heteroaromatic ring as the raw material, design and synthesis of macrocyclic compounds of the two asymmetric unexpected three symmetrically macrocyclic compound, wherein four have not been reported. Their structure was confirmed by 1H-NMR, 13C-NMR, high resolution mass spectrometry and X-Ray single crystal diffraction experiments. The crystal structure of these compounds, including unit cell accumulation was some discussion, the asymmetric benzene ring is the main reason for the formation of different conformation of the of nitrogenous heterocyclic Cup by the four-membered ring aromatic. The article also discussed the possibility of asymmetric oxygen bridge nitrogen-containing heterocyclic calixarenes with metal ions to form supramolecular compounds, have not been able to get the expected results.

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CLC: > Mathematical sciences and chemical > Chemistry > Organic Chemistry > Organic Chemistry general issues > Synthetic organic chemistry
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