Syntheses of per-15 N labeled etioporphyrins I–IV and a related tetrahydrobenzoporphyrin for applications in organic geochemistry and vibrational spectroscopy

TD Lash, S Chen

Index: Lash, Timothy D.; Chen, Shaohua Tetrahedron, 2005 , vol. 61, # 49 p. 11577 - 11600

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Citation Number: 9

Abstract

Nitrogen-15 labeled pyrroles have been prepared from commercially available 15N glycine or sodium nitrite using the Barton-Zard, Knorr, and Kleinspehn approaches. These pyrroles were used as intermediates in the synthesis of per-15N labeled porphyrins needed for the analysis and assignment of vibrational spectra for sedimentary porphyrins. Etioporphyrin-I was prepared via pyrromethene intermediates, while etioporphyrins II–V and a related ...