| 摘要 |
The invention relates to a herbicidally and/or algicidally active compound of the general formula <CHEM> wherein R1 is a substituted or non-substituted alkyl group having 1-6 carbon atoms, or an alkenyl or alkynyl group having 2-6 carbon atoms; R2 is a halogen atom; a nitro group; a cyano group; a substituted or non-substituted benzyl, phenyl, phenoxy, phenylthio, phenylsulphinyl, phenylsulphonyl or phenylsulphonyloxy group; or a halogenated or non-halogenated alkyl, alkoxy, alkylthio, alkylsulphinyl, alkylsulphonyl or alkylsulphonyloxy group having 1-4 carbon atoms; R3 is a hydrogen atom, a halogen atom, or an alkyl group having 1-4 carbon atoms; and X is O or S; or a salt of this compound with an organic or inorganic acid. |
