TY - THES A1 - Dose, Klaus A1 - Risi, Sergio T1 - Zur radiationschemischen Bildung von Aminosäuren durch Carboxylierung und Aminierung T2 - Zeitschrift für Naturforschung, B N2 - The formation of aliphatic α-amino acids by X-ray induced carboxylation of simple amines or amination of simple carboxylic acids is not favored over the formation of other amino acids. The new carboxylic and amino groups are more or less distributed statistically over the carbon atoms of the starting material. On radiationchemical formation of aliphatic hydrocarbons over C3, therefore, an increasing amount of unusual amino acids is produced. The results are influenced by various parameters such as temperature, pH, concentration, linear energy transfer and total dosis of radiation applied. Also peptides can be formed radiationchemically. However, the formation of greater molecules by radiationchemical processes under the conditions of a primitive earth seems to have only a low probability. The reaction mechanisms of radiationchemical carboxylation and amination are discussed. Y1 - 2014 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/74884 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-748840 SN - 1865-7117 SN - 0932-0776 N1 - Teil der Inauguraldissertation, S. RISI, Frankfurt a. M. 1967. VL - 23 IS - 5 SP - 581 EP - 587 PB - Verlag der Zeitschrift für Naturforschung CY - Tübingen ER -