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Porphyrazinediols: Synthesis, Characterization, and Complexation to Group IVB Metallocenes.
Bellec1, Garrido Montalban A, Williams
1Departments of Chemistry, Imperial College of Science, Technology and Medicine, South Kensington, London SW7 2AY, U.K., Northwestern University, Evanston, Illinois 60208, and University of Warwick, Coventry CV4 7AL, U.K.
The Journal of Organic Chemistry
|May 18, 2000
Summary
Researchers synthesized novel metalated porphyrazinediols using tartrate derivatives. The stability of these compounds depends on the central metal ion, leading to new porphyrazine derivatives upon reaction with metallocene dichlorides or oxidation.
Area of Science:
- Organic Chemistry
- Coordination Chemistry
- Materials Science
Background:
- Porphyrazines are macrocyclic compounds with diverse applications.
- The synthesis and properties of metalated porphyrazines are of significant interest.
- Functionalized porphyrazines offer tunable electronic and optical properties.
Purpose of the Study:
- To synthesize the first metalated porphyrazinediols.
- To investigate the stability of these novel compounds.
- To explore new synthetic routes to functionalized porphyrazines.
Main Methods:
- Synthesis of 2,3-dihydroxymaleonitrile derivatives from (L)-(+)-dimethyl tartrate.
- Linstead macrocyclization for porphyrazine ring formation.
- Transmetalation and deprotection steps to yield metalated porphyrazinediols.
- Reactions with metallocene dichlorides and DDQ oxidation for further derivatization.
Main Results:
- Successful preparation of the first metalated porphyrazinediols.
- Demonstrated dependence of compound stability on the coordinated metal ion.
- Synthesized new solitaire porphyrazines and porphyrazine dinitriles through subsequent reactions.
Conclusions:
- The study presents a novel synthetic pathway to metalated porphyrazinediols.
- Metal ion choice critically influences the stability of these porphyrazine derivatives.
- The developed methods allow for the creation of diverse functionalized porphyrazines.