vic-Diacrylic ester porphyrins as starting materials for monobenzoporphyrin and opp-dibenzoporphyrin syntheses

Article Abstract:

Synthesis of a bis(vic-diacrylic ester) porphyrin has been carried out using the 3+1 methodology. A 2-step procedure was used to convert the bis(vic-diacrylic ester) porphyrin and vic-diacrylic ester porphyrin to the opp-dibenzoporphyrin and the monobenzoporphyrin, respectively. The compounds have been characterized by UV-visible and H NMR spectroscopies. Benzoporphyrins are interesting chromophores that may be applied in time as photosensitizers for photodynamic therapies. This is especially true of the lower analog mono- and dibenzo- compounds in the class. A new generation of photosensitizers is needed for development of a new therapy.

Canada, Research, Porphyrins, Photosensitizing compounds, Photosensitizing agents, Phototherapy

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Syntheses and UV-vis spectroscopic properties of new lipophilic tert-butyl- and 1-adamantyl substitutes, negatively solvatochromic pyridinium N-phenolate betaine dyes

Article Abstract:

To get zwitterionic dyes more soluble in nonpolar solvents, syntheses and negative solvatochromisms of two new lipophilic pentaphenyl pyridinium N-phenolate betaine dyes substituted with either seven tert-butyl groups or three tert-butyl and two 1-adamantyl groups in the outer phenyl rings have been carried out. Visible ultraviolet (UV-vis) spectroscopic properties have been considered. Standard betaine dye would be an example of a nonpolar solvent.

Aromatic compounds, Solution (Chemistry), Solutions (Chemistry), Solubility, Dyes and dyeing, Dyeing, Dyes, Chromizing

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