Authors: E. Hayon, T. Ibata, N. N. Lichtin, M. Simic The reactivity and sites of attack of hydroxyl radicals on simple amides in aqueous solution were studied. The following amides were examined: formamide (F), N-methylformamide (NMF), N,N-dimethylformamide (DMF), acetamide (A), N-methylacetamide (NMA), and , -dimethylacetamide (DMA). The rate constants for reaction of OH radical with NMF, DMF, NMA, and DMA…
Authors: N. K. Kochetkov, L. I. Kudrjashov, M. A. Chlenov, L. P. Grineva The mechanism of the radiation-induced dephosphorylation reaction was investigated by studying the γ-radiolysis of 10mM solutions of D-glucopyranosyl phosphate, D-glucose 6-phosphate (Glc-6-P), and d-ribose 5-phosphate (Rib-5-P). Dephosphorylation occurred with OH-radical participation, since G(H3PO4) values for nitrous oxide-saturated solutions were 4.1, 1.7, and 2.3, and for nitrogen-saturated solutions…
Authors: M. P. Robertson, S. L. Miller IN contrast to the purines, the routes that have been proposed for the prebiotic synthesis of pyrimidines from simple precursors give only low yields. Cytosine can be synthesized from cyano-acetylene and cyanate; the former precursor is produced from a spark discharge in a CH4/N2 mixture and is an abundant interstellar molecule. But this…