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Synthesis and Characterization of a New (Nitro) Pyridyl Cobalt Tetraphenyl Porphyrin Derivative, (Nitro) Pyridyl Cobalt Tetra (Orthopivalamido) Phenyl Porphyrin.

It recent research, (py)Co(III)TTP(N[O.sub.2]) derivatives have been synthesized for possible use as an industrial oxo-transfer catalyst. One problem that arose during analysis was that this compound and its derivatives undergo a phenomenon that appears to be a disproportionation reaction. The purpose of this research was to find a way to stop this disproportionation reaction from occurring without altering the catalytic properties of the compound and its derivatives. To do this tetraphenyl ortho-pivalamido phenyl porphyrin, or "picket fence porphyrin," was used in the synthesis of the pyridyl derivatives. It was found that the picket fence limited reactivity, as expected, without changing the desired catalytic properties. After using Nuclear Magnetic Resonance (NMR), ultraviolet visibility analysis, and infrared spectroscopy analysis, it was discovered that the solution used in filtering the compound contained amylene and was impure. It was concluded that disproportionation reactions do not occur in the normal pyridyl derivatives under regular circumstances and that the reaction that was appearing on NMR and ultraviolet visibility analysis was actually an oxidation reaction with amylene, an alkane. Further research could show that this is a beneficial property of the catalyst.
Nicholas William De Nitto
South Carolina Governor's School for Science and Mathematics
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Author:De Nitto, Nicholas William
Publication:Bulletin of the South Carolina Academy of Science
Article Type:Brief Article
Geographic Code:1U5SC
Date:Jan 1, 2001
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