Synthesis of Pyrimidines and Triazines in Ice: Implications for the Prebiotic Chemistry of Nucleobases
作者:César Menor-Salván、Dra. Marta Ruiz-Bermejo、Marcelo I. Guzmán、Susana Osuna-Esteban、Sabino Veintemillas-Verdaguer
DOI:10.1002/chem.200802656
日期:2009.4.20
nucleobases: Freeze–thaw cycles in urea (1) solutions under methane/nitrogen atmospheres lead, with application of an energy source, to the synthesis of pyrimidines (mainly cytosine (2) and uracil (3)), triazines (such as cyanuric acid (4)), and adenine. This synthesis appears to be dependent on the atmosphere and the freezing conditions. At room temperature, hydantoin (5) is obtained. However, a freezing