Geosynthesis of organic compounds: II. Methylation of phenanthrene and alkylphenanthrenes

Details Geosynthesis of organic compounds: II. Methylation of phenanthrene and alkylphenanthrenes Geosynthesis of organic compounds: II. Methylation of phenanthrene and alkylphenanthrenes

Oct 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995gecoa..59.4259a&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 59, Issue 20, pp.4259-4266

Physics

1

Scientific paper

A crude oil and several shales which contain anomalously high concentrations of phenanthrene, 1-methylphenanthrene, 1,7-dimethylphenathrene, and retene have been shown to contain relatively high concentrations of their corresponding 9-methyl counterparts. In laboratory experiments carried out under mild conditions, each of the phenanthrenes has been shown to be substituted preferentially at the 9-position when a methyl donor was heated with the substrate in the presence of a clay catalyst. These observations have been interpreted as evidence for a sedimentary methylation process.

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