申请人:Rhone-Poulenc Agriculture Ltd.
公开号:US06028032A1
公开(公告)日:2000-02-22
1,3-oxazin-4-ones of formula (I), ##STR1## wherein R.sup.1 represents phenyl optionally substituted; R.sup.2 represents: a straight- or branched-chain alkyl having from one to ten carbon atoms which is substituted by one or more groups R.sup.8 which may be the same or different; a straight- or branched-chain optionally halogenated alkenyl or alkynyl group having up to ten carbon atoms; or a group selected from cyano, --CHO, --COR.sup.7, --CO.sub.2 H, --CO.sub.2 R.sup.7, --COSR.sup.7, --CONR.sup.9 R.sup.10, --CH.dbd.NOH, --CH.dbd.NOR.sup.7, --CH.dbd.NOCOR.sup.7, --CH.dbd.NNR.sup.9 R.sup.10, --CH.sub.2 CN, --CH.sub.2 NO.sub.2 and oxiranyl; R.sup.3 represents phenyl optionally substituted or R.sup.3 represents a first five to seven membered heteroaromatic ring; said first ring being optionally fused and said first ring being linked to the nitrogen atom of the group NR.sup.6 via one of the ring carbon atoms; R.sup.4 and R.sup.5 independently represent lower alkyl; W represents --NR.sup.6 --; R.sup.6 represents hydrogen, lower alkyl, haloalkyl, alkenyl, alkynyl, --COR.sup.7 or --CO.sub.2 R.sup.7 ; and their use as herbicides.
式(I)的1,3-噁唑啉-4-酮,其中R.sup.1代表苯基,可以选择性地被取代;R.sup.2代表:具有1到10个碳原子的直链或支链烷基,该烷基被一个或多个R.sup.8基团取代,这些基团可以相同也可以不同;具有最多十个碳原子的直链或支链可选择性卤代烯烃或炔烃基团;或者从氰基,--CHO,--COR.sup.7,--CO.sub.2 H,--CO.sub.2 R.sup.7,--COSR.sup.7,--CONR.sup.9 R.sup.10,--CH.dbd.NOH,--CH.dbd.NOR.sup.7,--CH.dbd.NOCOR.sup.7,--CH.dbd.NNR.sup.9 R.sup.10,--CH.sub.2 CN,--CH.sub.2 NO.sub.2和环氧乙基中选择的基团;R.sup.3代表苯基,可以选择性地被取代,或者R.sup.3代表第一个五到七元杂环芳烃环;所述第一个环可以选择性地融合,所述第一个环通过其中一个环碳原子与基团NR.sup.6的氮原子连接;R.sup.4和R.sup.5独立地代表较低的烷基;W代表--NR.sup.6--;R.sup.6代表氢,较低的烷基,卤代烷基,烯烃基,炔烃基,--COR.sup.7或--CO.sub.2 R.sup.7;以及它们作为除草剂的用途。