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Communication | Special issue | Vol 47, No. 1, 1998, pp.113-119
Published online, 1st January, 1970
DOI: 10.3987/COM-97-S(N)39
Macrocycles Containing Five Pyrrole Subunits: The Iso-oxopentaphyrin System

Richard G. Khoury, Laurent Jaquinod, Liem T. Nguyen, and Kevin M. Smith*

*Department of Chemistry, University of California, One Shields Ave., Davis, CA 95616, U.S.A.


Reaction of a 1,9-difomyl-5-dipyrroketone (11) with a tripyrrane (12) affords a novel pentapyrrolic macrocycle (13) characterized as an iso-oxopentaphyrin (λmax 787 nm). Along with the iso-oxopentaphyrin, small amounts of oxophlorin (20) and porphyrin (21) are also produced. Mechanistic implications are discussed.