Synthesis and biological activities of cis and trans 5-amino-3-[(6-chloro-3-pyridyl)methyl]amino-1-(5,5-dimethyl-2-oxo-4-substitutedphenyl-1,3,2-dioxaphosphinan-2-yl)-4-cyano(ethoxycarbonyl)-1H-pyrazoles
2006
A series of novel title compounds have been designed and synthesized by a multi-step reaction, the stereochemistry of the reaction was investigated, the structures of all compounds prepared have been confirmed by 1H NMR, IR, EI-MS spectroscopy and elemental analysis. The crystal structures of cis 6b and trans 6b were determined by single crystal X-ray diffraction. The results of preliminary bioassay indicate that some compounds possess a certain extent inhibition effect against aphides at the concentration of 250 ppm.
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