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First optical resolution of meso–meso linked diporphyrin

✍ Scribed by Naoya Yoshida; Atsuhiro Osuka

Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
82 KB
Volume
41
Category
Article
ISSN
0040-4039

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✦ Synopsis

meso-meso Linked diporphyrin was separated by chiral HPLC in its optically pure and thermally stable forms, indicating a high rotation barrier around the meso-meso linkage. Its CD spectrum provided rich information on the absorption characteristics of meso-meso linked diporphyrin.

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Regioselective [3+4] cycloaddition of an azomethine ylide to meso–meso, β–β, β′–β′ triply linked diporphyrins
✍ Takayuki Tanaka; Yasuyuki Nakamura; Naoki Aratani; Atsuhiro Osuka 📂 Article 📅 2008 🏛 Elsevier Science 🌐 French ⚖ 457 KB

Thermal reaction of meso-meso, b-b, b 0 -b 0 triply linked diporphyrins with an azomethine ylide produced seven-membered cycloadducts via formal [3+4] cycloaddition at the bay-area. Bischlorin structures of the cycloadducts are characterized on the basis of spectroscopic data and confirmed by single