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Expanded porphyrin contraction: from [22]triphyrin(6.6.0) to [22]triphyrin(6.5.0).
Autorzy
Rok wydania
2019
Czasopismo
Numer woluminu
25
Strony
11859-11863
DOI
10.1002/chem.201903181
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
An expanded triphyrin containing a bipyrrole moiety and annulene links, namely tetraphenyl‐[22]triphyrin(6.5.0), 2, has been synthesized. The synthesis proceeded by a postsynthetic transformation of tetraphenyl‐[22]triphyrin(6.6.0), 1, in a metal‐free unexpected and unprecedented ring contraction during column chromatography on alumina. The observed transformation, located at the hydrocarbon chain linking the pyrrole units, formally corresponds to a subtraction of one carbon atom from an annulene circuit. In contrast to the flexible substrate 1, the product 2 is conformationally rigid, and capable of chloride anion binding in its protonated form.
Słowa kluczowe
Alumina, anion binding, porphyrinoids, ring contraction, Triphyrin
Adres publiczny
http://dx.doi.org/10.1002/chem.201903181
Strona internetowa wydawcy
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