Chlorochroa Species

10-trimethyl-5,9-undecadienoate, was prepared by alkylation of the dianion of propionic acid with homogeranyl iodide and methylation [106]. 

Chlorochroa sayi males produce a pheromone consisting primarily of methyl geranate, with trace amounts of methyl citronellate and methyl dihydrofarnesoate [107]. Methyl geranate is readily available in multigram quantities from fractional distillation of the commercially available mixture of methyl geranate and methyl nerate (J.G. Millar, unpublished data), or the two isomers can be separated chromatographically [107]. 

The biological activity of the synthetic pheromones of all three Chlorochroa species has been verified in bioassays [106,107]. However, as with other species, bugs are attracted to the vicinity of pheromone-baited traps, but few bugs enter the traps. 

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