Synthesis and characterization of long-chain 1,2-dioxo compounds
作者:Gerhard Knothe
DOI:10.1016/s0009-3084(02)00014-2
日期:2002.5
positions from the methyl ester group. The compounds were characterized by massspectrometry and nuclear magnetic resonance spectroscopy. In massspectrometry, both electron and chemicalionization (methane as reagent gas) were investigated. The position of the dioxo moiety can be determined in both ionization modes, however, in electron ionization mode the corresponding fragment ions are considerably stronger