Abstract
AbstractA number of substituted 4‐pyridone‐3‐carboxanilide derivatives show various degrees of light‐dependent herbicidal activity. The effects of substituents at the anilide moiety on the activity against Echinochloa oryzicola were analysed quantitatively with physicochemical substituent parameters. The activity was shown to vary parabolically with total hydrophobicity (Σπ) of the anilide ring substituents as well as with the steric parameter (Es) of the ortho‐substituents. The Es parameter for only the bulkier ortho‐substituent, with the more negative value, but not for the two, was significant. The effect of substituents at the 1‐position was expressible by indicator variables assigned to each 1‐substituted series, the physicochemical rationalization being left for future analyses.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
