Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Letter
The First Experimental Demonstration of Benzoporphyrin Formation from Sedimentary Porphyrins
Shinya NomotoMitsuru SatouTakahiro YoshidaHajime MitaGen KumagaiKouichi NomotoHideo KigoshiYuichiro Kashiyama
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2008 Volume 37 Issue 5 Pages 490-491

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Abstract

Etioporphyrin, one of the most common sedimentary porphyrins, was heated at 300 to 450 °C to investigate the diagenetic formation of benzoporphyrins. Chromic acid oxidation of the resulting products afforded maleimides, as well as phthalimides, indicating the formation of benzopyrrole units in the substrate. Isomer ratios of dimethylphthalimides formed during heating were in accordance with those obtained by chromic acid oxidation of the Cretaceous/Tertiary sediments at Rumoi, Hokkaido, which suggests that alkylporphyrins could be transformed into benzoporphyrins in sediments.

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© 2008 The Chemical Society of Japan
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