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Das Pyrrocorphin-Ligandsystem: Synthese des 2,2,7,7,12,12,17-Heptamethyl-2,3,7,8,12,13-hexahydroporphyrins. Kurzmitteilung

✍ Scribed by Reinhard Sehwesinger; Rudolf Waditschatka; James Rigby; René Nordmann; Wolfhard B. Schweizer; Engelbert Zass; Albert Eschenmoser

Publisher
John Wiley and Sons
Year
1982
Tongue
German
Weight
688 KB
Volume
65
Category
Article
ISSN
0018-019X

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✦ Synopsis

The Pyrrocorphin Ligand System: Synthesis of 2,2,7,7,12,12,17‐Heptamethyl‐2,3,7,8,12,13‐hexahydroporphyrin

Reaction Schemes 4 and 6 summarize the synthesis of the title compound, a representative of a recently described novel type of hexahydroporphinoid ligand system (‘pyrrocorphin’). Pyrrocorphins incorporate structural elements of both corrins and porphyrins and are chemically closely related to the tautomeric non‐pyrrolic corphins (Scheme 1).

The synthesis exemplifies a methodology for constructing pyrrolic hydro‐porphinoids with the methods of corrin instead of porphyrin synthesis. An X‐ray analysis of 2‐(cyanomethyl)‐2‐methyl‐3‐oxobutanamide has been carried out.

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