The Chemistry of Pyrrolic Compounds. LXX. The Synthesis of Model Porphyrins as an Aid to the Recognition of Chlorobium-Derived Petroporphyrins in the Julia Creek Oil Shale Deposit

Abstract
In order to obtain evidence for the presence of Chlorobium -derived petroporphyrins in the Julia Creek oil shales a range of simple porphyrins (10d-i) carrying the type of side chain characteristic of Chlorobium chlorophylls has been prepared for study by mass spectroscopic techniques. One approach to the preparation of a Chlorobium-type petroporphyrin by ring synthesis has met with very limited success.

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