Porphyrins with exocyclic rings. II: Synthesis of geochemically significant tetrahydrobenzoporphyrins from 4,5,6,7-tetrahydro-2-H-isoindoles
In: Journal of organic chemistry, Jg. 57 (1992), Heft 18, S. 4820-4828
Online
academicJournal
- print, 38 ref
Zugriff:
Benzo- and tetrahydrobenzoporphyrins are widespread constituents of oil shales and petroleum. Although the origins of these materials are not known, a case is made for divinylchlorophyll a, a widespread pigment in marine algae, being the precursor to many of these geoporphyrins. Total syntheses of four tetrahydrobenzoporphyrins related to etioporphyrin III are described. Tetrahydroisoindoles were prepared by condensation of isocyanoacetates with 1-nitrocycloherene in the presence of DBU or by reaction of aminomalonates with 2-formylcyclohexanone.
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Porphyrins with exocyclic rings. II: Synthesis of geochemically significant tetrahydrobenzoporphyrins from 4,5,6,7-tetrahydro-2-H-isoindoles
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Autor/in / Beteiligte Person: | MAY, D. A ; LASH, T. D |
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Zeitschrift: | Journal of organic chemistry, Jg. 57 (1992), Heft 18, S. 4820-4828 |
Veröffentlichung: | Washington, DC: American Chemical Society, 1992 |
Medientyp: | academicJournal |
Umfang: | print, 38 ref |
ISSN: | 0022-3263 (print) |
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