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Synthesis of Unique Extended π Structures by Pt‐Mediated Benzannulation of Nickel(II) Tetraalkynylporphyrins
Author(s) -
Boerner Leigh J. K.,
Nath Mahendra,
Pink Maren,
Zaleski Jeffrey M.
Publication year - 2011
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201101741
Subject(s) - nickel , scheme (mathematics) , chemistry , stereochemistry , combinatorial chemistry , spectral line , computer science , physics , organic chemistry , mathematics , mathematical analysis , astronomy
A piece of the π! In the presence of PtCl 2 , Ni II tetraalkynylporphyrin complex undergoes a six‐ endo ‐dig‐type cyclization to form two unusual structural isomers of Ni II bisphenanthroporphyrins. Under the same conditions, Ni II dialkynylpicenoporphyrin forms the extended Ni II picenophenanthroporphyrin (see scheme). These otherwise inaccessible π‐fused exocyclic porphyrins were characterized by 2D NMR and show strongly redshifted electronic spectra.