The present disclosure provides a process for preparation of a compound of formula 1, or isomers or its derivatives thereof, which show a high herbicidal activity against wide variety of weeds. (I) wherein R1 is a C3-C4 alkynyl group, a C1-C5 alkyl group, or a C3-C4 alkenyl group, and X is selected from the group consisting of F, Cl, Br, I or H atom.
本公开提供了一种制备化合物的过程,该化合物的
化学式为1,或其异构体或衍
生物,对各种杂草表现出高除草活性。(I)其中R1是C3-C4炔基,C1-C5烷基或C3-C4烯基,X选自F、Cl、Br、I或H原子组成的组。