申请人:Nihon Tokushu Noyaku Seizo K.K.
公开号:US04909828A1
公开(公告)日:1990-03-20
Herbicidal 2,5-dihydropyrroles of the formula ##STR1## wherein A represents hydroxy, halogen, an alkylcarbonyloxy group having alkyl with 1 to 4 carbon atoms optionally substituted by halogen, or an alkylsulfonyloxy group having 1 to 4 carbon atoms optionally substituted by halogen, X represents CH or N, and R.sup.1, R.sup.2 and R.sup.3 each represent hydrogen, or an alkyl group having 1 to 4 carbon atoms optionally substituted by halogen, with the proviso that all of R.sup.1, R.sup.2 and R.sup.3 do not simultaneously represent hydrogen, or R.sup.2 and R.sup.3, together with the carbon atom to which they are bonded, may form an alicyclic ring with 3 to 6 carbon atoms. Intermediates of the formula ##STR2## are also new.
式子为##STR1##的除草2,5-二氢吡咯,其中A表示羟基、卤素、具有1至4个碳原子的烷基羰酸酯氧基团,该烷基可以被卤素取代,或具有1至4个碳原子的烷基磺酰氧基团,该烷基可以被卤素取代,X表示CH或N,R.sup.1、R.sup.2和R.sup.3各自表示氢,或具有1至4个碳原子的烷基,该烷基可以被卤素取代,但R.sup.1、R.sup.2和R.sup.3不能同时表示氢,或R.sup.2和R.sup.3与它们所连接的碳原子一起可以形成3至6个碳原子的脂环。式子为##STR2##的中间体也是新的。