Prebiotic Adenine Revisited: Eutectics and Photochemistry

Details Prebiotic Adenine Revisited: Eutectics and Photochemistry Prebiotic Adenine Revisited: Eutectics and Photochemistry

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004oleb...34..361o&link_type=abstract

Origins of Life and Evolution of the Biosphere, v. 34, Issue 4, p. 361-369 (2004).

Physics

5

Scientific paper

Recent studies support an earlier suggestion that, if adenine was formed prebiotically on the primitive earth, eutectic freezing of hydrogen cyanide solutions is likely to have been important. Here we revisit the suggestion that the synthesis of adenine may have involved the photochemical conversion of the tetramer of hydrogen cyanide in eutectic solution to 4-amino-5-cyano-imidazole. This would make possible a reaction sequence that does not require the presence of free ammonia. It is further suggested that the reaction of cyanoacetylene with cyanate in eutectic solution to give cytosine might have proceeded in parallel with adenine synthesis.

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