The porphyrins from the 'annulene chemist's' perspective

Abstract

Abstract

Extroverted Confusion—Linus Pauling, Melvin Calvin, and Porphyrin Isomers

“…Entries in his notebook from June 1944 relate to the bond structure and isomers of porphyrins. This field was pioneered by Emanuel Vogel [16] and is exemplified by the synthesis of the Cskeleton isomer porphycene 2. [17] In the past two decades this developed into a whole new area of tetrapyrrole research on expanded, contracted and isomeric porphyrins, as they were so aptly named in the title of a book by Sessler and Weghorn.…”

Von kleinen Kohlenstoffringen zu Porphyrinen – ein persönlicher Bericht über 50 Jahre Forschung

“…Formal bedurfte es lediglich noch der Einführung von zwei Doppelbindungen in 35, um zum bisher nicht diskutierten 1,6-Methano [10]annulen (36) zu gelangen.…”

“…Von den weiteren 1,6-Methano [10] Parallel zu dieser Entwicklung gelang es H.-J. Altenbach 1972 in Köln, die gesamte Palette der höheren Benzoloxide, syn-und anti-Benzoldioxid (70 bzw.…”

Charge-transfer Interactions of Octaethylporphycenatozinc(II) with 2,6-Dichloro-3,5-dicyano-1,4-benzoquinone

“…Of the different tetrapyrrole compounds known to date, the porphycene, a structural isomer of porphyrin, forms an important class of molecules [4]. Various spectral and electrochemical studies have been carried out on metalloporphycenes [5][6][7].…”