Structural Elucidation of Long‐Chain Fatty Acids and Alcohols by Mass Spectrometry of their Cyclic Amide Derivatives

Abstract

AbstractSeveral deuterium‐labelled normal‐chain carboxylic acids and alcohols, their unlabelled analogues and several unlabelled methyl‐branched chain fatty acids and alcohols have been investigated by mass spectrometry — at different electron energies — of their respective N‐acyl 2‐methylaziridine and pyrrolidine and N‐alkyl 2‐pyrrolidone and 2‐piperidone derivatives. The result shows that these kinds of amides and lactams are among the best derivatives of fatty acids and alcohols for structural elucidation by mass spectrometry.