Abstract
A new method for determination of the stereochemistry of each double bond in minute amounts of highly unsaturated termite trail pheromone is discussed. Micro-chemical reactions, acetylation and partial hydrogenation of the isolated termite trail pheromone, followed by capillary gas chromatography—mass spectrometry (GC—MS) and gas chromatography—fourier-transform infrared spectroscopy analyses of the products are the main procedures employed. The number of double bonds in each partially hydrogenated peak is determined by GC—MS, and the presence or absence of a trans double bond in the corresponding total absorbance monitoring peak is determined from the infrared absorption around 970 cm −1 The structure of the termite ( Reticulitermes speratus, Isoptera) trail pheromone was determined as cis-3, cis-6, trans-8-dodecatrien-1-ol.
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