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- W2023494292 abstract "Sixteen O,O-bisaryl sec-butylphosphonates have been synthesised by condensing sec-butylphosphonyl dichloride with substituted phenols. The compounds were tested against two phytopathogenic fungi, Rhizoctonia bataticola and Helminthosporium oryzae. The most active compound against R. bataticola is O,O-bis(3-methylphenyl) sec-butylphosphonate (ED50 29·56 mg litre-1) and against H. oryzae, O,O-bis(2-chlorophenyl) sec-butylphosphonate and its para-chloro analogue (ED50 0·14 and 0·13 mg litre-1 respectively). Quantitative structure–activity relationships on the fungicidal activity have been analysed by means of multiple regression analysis using physicochemical substituent parameters. Electronic parameters viz., σ and F have expressed significant variability in fungitoxicity against both the fungi, viz. R. bataticola and H. oryzae. Hydrophobic and steric parameters are also found to be important in the correlation studies. © 1997 SCI." @default.
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- W2023494292 date "1997-06-01" @default.
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- W2023494292 title "Synthesis and Structure-Activity Relationships for the Fungicidal Activity ofO,O-bisarylsec-butylphosphonates" @default.
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- W2023494292 doi "https://doi.org/10.1002/(sici)1096-9063(199706)50:2<85::aid-ps576>3.0.co;2-e" @default.
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