TETRAHYDROPHTALIMIDE DERIVATIVE AND HERBICIDE WITH THE SAME AS ACTIVE INGREDIENT

摘要

NEW MATERIAL:A compound of formula I (X is Cl or F; Y is H or methyl; n is 1-5). EXAMPLE:N-[3-(2-Azidethyl)-2,4-dechlorophenyl]-3,4,5,6-tetrahydrophtha limide. USE:A herbicide. Having a wide range of herbicidal spectrum at low dosages, and giving high safety on crops under cultivation. Active an Allium macrostemon, Scirpus juncoides, Digitaria adscendens, Lindernia procumbens, Polygonaceae, etc. PREPARATION:The objective compound of the formula I can be obtained by reaction in an organic solvent (e.g. N,N-dimethylformamide) at room temperature to 120 deg.C for 1-8hr between (A) a tetrahydrophthalimide derivative of formula II (Z is Cl, Br, I, CH3SO2O-, of formula III, etc.) and (B) sodium or potassium azide.