Synthesis of <i>meso</i>,<i>meso</i>′-Pyrrole-Bridged Diporphyrins by Cu(I)-Mediated Annulation
Chihiro Maeda (1581427)Hiroshi Shinokubo (1349838)Atsuhiro Osuka (1393408)
Abstract
Cu(I)-mediated annulation of <i>meso</i>,<i>meso</i>′-1,3-butadiyne-bridged Zn(II) diporphyrin with various amines efficiently provided <i>meso</i>,<i>meso</i>′-pyrrole-bridged Zn(II) diporphyrins. Notable intramolecular electronic interactions in these diporphyrins were observed. A starburst porphyrin pentamer was synthesized via Suzuki−Miyaura coupling of <i>N</i>-bromophenylpyrrole-bridged diporphyrin and <i>meso</i>,<i>meso</i>′-diborylated porphyrin.
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