In vitro: |
Environmental ence & Technology, 2009, 43(16):6275-6282. | Ozonolysis of Lignin Models in Aqueous Solution: Anisole, 1,2-Dimethoxybenzene, 1,4-Dimethoxybenzene, and 1,3,5-Trimethoxybenzene.[Reference: WebLink] | METHODS AND RESULTS:
Selected 2-methoxyphenols,1,2-dimethoxybenzenes,and 1,3-benzodioxoleswere tested in the field as attractants for the northern corn root worm (NCR), Diabrotica barberi Smith & Lawrence, in comparison with eugenol (4-allyl-2-methoxyphenol), isoeugenol (2- methoxy-4-(1-propenyl)phenol), and 2-methoxy-4-propylphenoI. Of these, 4-ethyl-2-methoxyphenol and 4-butyl-2-methoxyphenol showed relatively high degrees of attraction.
CONCLUSIONS:
Structural comparisons indicated that in a eugenol-type structure (i.e., a 1,2,4-trisubstituted benzene) a 4-alkyl substituent and a I-hydroxyl group are necessary features for attraction of the NCR. The optimal 4-alkyl chain length is a three-carbon chain. |
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