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>Synthesis, spectral properties and insecticidal, acaricidal and ovicidal activities of someO‐(1,5‐disubstituted‐ 6‐oxo‐12H‐pyridazin‐4‐yl) phosphorothioates
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Synthesis, spectral properties and insecticidal, acaricidal and ovicidal activities of someO‐(1,5‐disubstituted‐ 6‐oxo‐12H‐pyridazin‐4‐yl) phosphorothioates
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机译：Synthesis, spectral properties and insecticidal, acaricidal and ovicidal activities of someO‐(1,5‐disubstituted‐ 6‐oxo‐12H‐pyridazin‐4‐yl) phosphorothioates
AbstractA synthesis ofO,O‐dialkyl,O‐alkylO‐2‐chloroethyl (orO‐2‐ethoxyethyl)O‐(1,5‐disubstituted‐6‐oxo‐1H‐pyridazin‐4‐yl) phosphorothioates is described. Infrared, Raman and ultraviolet spectra of the compounds prepared are interpreted. The wave‐numbers of thev(CC) bands were correlated with substituent constants. Good linear correlations ofv(CO) with σ, σF, σIand σRwere observed for compounds containing various substituents in the neighbourhood of the keto group of the pyridazinone ring. The insecticidal, acaricidal and ovicidal activities ofO‐(ethyl or isopropyl),O‐(alkyl, 2‐chloroethyl, or 2‐ethoxyethyl)O‐(5‐methoxy‐1‐methyl‐6‐oxo‐1H‐ pyridazin‐4‐yl) phosphorothioates,O‐ethylO‐isopropylO‐(5‐methoxy‐1‐substituted‐6‐oxo‐1H‐pyridazin‐4‐yl) phosphorothioates andO‐ethylO‐isopropylO‐(1‐methyl‐5‐substitutedd‐oxo‐1H‐p
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