ROM Polymerization-Capture-Release Strategy for the Chromatography-Free Synthesis of Novel Unsymmetrical Porphyrazines
摘要:
Crossover-Linstead macrocyclization reactions of two norbornenyl-tagged diaminomaleonitriles with dipropylmaleonitrile gave access to crude mixtures of porphyrazines containing diamino-hexapropyl-porphyrazine magnesium complexes. The mixtures were subjected to ring-opening metathesis polymerization to yield the insoluble diaminoporphyrazine-functionalized polymers. Acid-mediated cleavage from the polymer backbone followed by acylation of the resultant sensitive macrocyclic diamines gave monoacetyl-, monotrifluoroacetyl-, and ditrifluoroacetyl-substituted porphyrazinedi-amines. Conversion of these amido-porphyrazines to the corresponding zinc macrocycles and studies of their electronic absorption and emission spectra, electrochemistry, and photophysics are described.
ROM Polymerization-Capture-Release Strategy for the Chromatography-Free Synthesis of Novel Unsymmetrical Porphyrazines
摘要:
Crossover-Linstead macrocyclization reactions of two norbornenyl-tagged diaminomaleonitriles with dipropylmaleonitrile gave access to crude mixtures of porphyrazines containing diamino-hexapropyl-porphyrazine magnesium complexes. The mixtures were subjected to ring-opening metathesis polymerization to yield the insoluble diaminoporphyrazine-functionalized polymers. Acid-mediated cleavage from the polymer backbone followed by acylation of the resultant sensitive macrocyclic diamines gave monoacetyl-, monotrifluoroacetyl-, and ditrifluoroacetyl-substituted porphyrazinedi-amines. Conversion of these amido-porphyrazines to the corresponding zinc macrocycles and studies of their electronic absorption and emission spectra, electrochemistry, and photophysics are described.
ROM Polymerization−Capture−Release: Application to the Synthesis of Unsymmetrical Porphyrazinedithiols and Peripherally Metalated Derivatives
作者:Matthew J. Fuchter、Brian M. Hoffman、Anthony G. M. Barrett
DOI:10.1021/jo050369c
日期:2005.6.1
Crossover Linstead macrocyclization of a doubly norbornenyl-functionalized dimercaptornaleonitrile with dipropylmaleonitrile gave a crude mixture of porphyrazines containing the hexapropylpor-phyrazinedithiol magnesium complex. The mixture was subjected to ring-opening metathesis polymerization to yield the insoluble porphyrazinedithiol-functionalized polymers. Cleavage from the polymer backbone using mercury(II) acetate followed by reaction with electrophiles gave access to a range of thioporphyrazinedithiol derivatives including solitaire porphyrazines. Studies into the possible uses of hexapropyl-2,3-di-(carboxymethylthio)porphyrazine in sensing metal cations in solution are described.
ROM Polymerization-Capture-Release Strategy for the Chromatography-Free Synthesis of Novel Unsymmetrical Porphyrazines
作者:Matthew J. Fuchter、Benjamin J. Vesper、Karen A. Murphy、Hazel A. Collins、David Phillips、Anthony G. M. Barrett、Brian M. Hoffman
DOI:10.1021/jo047792q
日期:2005.4.1
Crossover-Linstead macrocyclization reactions of two norbornenyl-tagged diaminomaleonitriles with dipropylmaleonitrile gave access to crude mixtures of porphyrazines containing diamino-hexapropyl-porphyrazine magnesium complexes. The mixtures were subjected to ring-opening metathesis polymerization to yield the insoluble diaminoporphyrazine-functionalized polymers. Acid-mediated cleavage from the polymer backbone followed by acylation of the resultant sensitive macrocyclic diamines gave monoacetyl-, monotrifluoroacetyl-, and ditrifluoroacetyl-substituted porphyrazinedi-amines. Conversion of these amido-porphyrazines to the corresponding zinc macrocycles and studies of their electronic absorption and emission spectra, electrochemistry, and photophysics are described.