Unexpected plant-systemic insecticidal properties of alkylene-tethered bis-imidacloprid derivatives
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Alkylene-bis-isothiocyanates: Novel Insect Growth Regulators
In search for selective anti-insect agents some monoand bis-isothiocyanates were prepared and tested on third instar larvae of Manduca sexta. The alkylene-bis-isothiocyanates 4, 5 and 6 had a novel effect preventing formation of the abdominal spiracles and of the hooks (crochets) at the following molt to the 4th instar. Some of these larvae died in the molt, while spiracles remained absent also...
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An intramolecular hydrogen bond between NH•••O2N in insecticide, imidacloprid (1), and its nitromethylene analog 15 was proved by NMR and IR spectra. That electron delocalization over their planar moieties was disrupted by alkylation at the imidazolidine nitrogen atom is demonstrated by the hypsochromic shifts in UV and deshielding effect in NMR spectra. Interestingly, the N-alkyl derivatives (...
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ژورنال
عنوان ژورنال: Journal of Pesticide Science
سال: 2010
ISSN: 1348-589X,1349-0923
DOI: 10.1584/jpestics.g09-46