Part A. Chemical neutron activation analysis of aluminum in biological samples. Part B. Stereochemical consequences of chlorine substitution reactions with (2S,3S)dl-2-chloro-3-fluoropentane and (2S,3S)dl-3-chloro-2-fluoropentane in the gas, liquid and solid phase.

摘要

A. A method was developed for determination of aluminum in biological samples by anion exchange chromatography and neutron activation analysis (NAA). The samples were digested with nitric acid at 65;B. Previously reported recoil halogen-for-halogen substitution reactions of diastereomeric compounds in the gas, liquid and solid phases occurred predominantly with retention of configuration. The stereochemical consequences of translationally excited chlorine-for-halogen substitution reactions in 2,3-dihalopentanes were studied in the gas, liquid and solid phases. (2S,3S)-dl-3-chloro-2-fluoropentane and (2S,3S)-dl-2-chloro-3-fluoropentane were prepared stereospecifically from cis-2-pentane. The purified diastereomers were individually activated by thermal neutrons, and the