Ring-opening metathesis polymer sphere-supported seco-porphyrazines: efficient and recyclable photooxygenation catalysts.
[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.
Fuchter
Matthew J
MJ
Department of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, England.
Hoffman
Brian M
BM
Barrett
Anthony G M
AG
D002384:Catalysis; D007202:Indicators and Reagents; D008665:Metalloporphyrins / Q000138:chemical synthesis* / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D010777:Photochemistry; D011108:Polymers
D007202:Indicators and Reagents; D008665:Metalloporphyrins; D011108:Polymers