Synthesis,Crystal Struture And Application Of Organotin Aryloyacetates

Looking for high activity,selectivity and good environmental compatibility of herbicide is a hot issue in the research and development of new herbicides.Aryloxyacetic acids with strong biological activity were designed and synthesized in this paper,organotin aryloxyacetates were synthesized by alkyltin and aryloxyacetic acid.All compounds were characterized by elemental analysis and spectral characterization,and some typical structures were determined by X-ray crystal diffraction.The biological herbicidal activity of all compounds were tested preliminarily.The thermal stability of some new compounds were also studied.The paper includes the following five parts:1.The 13 substituted aryloxyacetic acids were synthesized via phenolic compound and sodium chloroacetate under alkaline condition.2.The 22 organotin aryloxyacetates were synthesized by aryloxyacetic acid and bis[tri(2-methyl-2-phenylpropyl)tin]oxide,tricyclohexyltin hydroxide,dibutyltin oxide or bis(tributyltin)oxide,in which 21 compounds were not reported.3.All compounds were characterized by elemental analysis,IR,1H NMR and 13C NMR.The 12 structures were determined by X-ray crystal diffraction.4.The thermal stability of some new compounds were studied in air atmosphere.5.The herbicidal activity of organotin aryloxyacetates were tested by Plating method for Portulaca oleracea,Amaranthus retroflexus,Semen Cassiae,Amaranthus spinosus,Brassica campestris,Amaranth.