title: Ring-opening metathesis polymer sphere-supported seco-porphyrazines: efficient and recyclable photooxygenation catalysts.
abstract: [reaction: see text] Crossover Linstead macrocyclization of norbornenyl-tagged diaminomaleonitrile with dipropylmaleonitrile gave the corresponding magnesium diaminohexapropylporphyrazine, which was subsequently converted into its zinc seco-derivative. Polymerization gave the corresponding ROMPgel and ROMPsphere (ROMP = ring-opening metathesis polymer) reagents, the latter of which proved efficient as an immobilized catalyst for the sensitized production of singlet oxygen for the purification-minimized parallel synthesis of endoperoxides and ene adducts.
authors.affiliation: Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, England.
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: Fuchter
authors.forename: Brian M
authors.initials: BM
authors.lastname: Hoffman
authors.forename: Anthony G M
authors.initials: AG
authors.lastname: Barrett
mesh_terms: D002384:Catalysis; D007202:Indicators and Reagents; D008665:Metalloporphyrins / Q000138:chemical synthesis* / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D010777:Photochemistry; D011108:Polymers
chemical_list: D007202:Indicators and Reagents; D008665:Metalloporphyrins; D011108:Polymers