申请人:Zeneca Limited
公开号:US05512537A1
公开(公告)日:1996-04-30
Herbicidal compounds have the formula ##STR1## in which R.sub.1 is hydrogen, methyl, ethyl, phenyl, 2-methylphenyl, 3-trifluoromethylphenyl, benzyl, 2-methylbenzyl or vinyl; R.sub.2 is hydrogen, methyl, ethyl or chloro; R.sub.3 is C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkyl, nitro, p-tolyloxy or p-chlorophenoxy; R.sub.4 is hydrogen or a methyl, methoxy, trifluoromethoxy or halo group at the 2, 4- or 5-position; m is --CH or N; and X is O or NOR.sub.5 in which R.sub.5 is methyl or ethyl; provided that: (a) when R.sub.1 is methyl, and (i) R.sub.3 is methyl, then R.sub.4 is 4-methyl, 4-methoxy or chloro; (ii) R.sub.3 is nitro, then R.sub.4 is methoxy; (b) when R.sub.1 is ethyl, R.sub.3 is methyl or methoxy; (c) when R.sub.2 is chloro, R.sub.3 and R.sub.4 are independently C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkoxy or C.sub.1 -C.sub.4 alkoxy; (d) when R.sub.2 is methyl or ethyl, R.sub.1 is hydrogen; (e) when R.sub.3 is hydrogen, R.sub.4 is 2-methyl, halo or methoxy; (f) if M is N, R.sub.3 is C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkyl or C.sub.1 -C.sub.4 haloalkoxy and R.sub.1 is not ethyl; and (g) if R.sub.1 is vinyl, M is N.
除非:(a) 当R1为甲基时,(i) R3为甲基,则R4为4-甲基,4-甲氧基或氯;(ii) R3为硝基,则R4为甲氧基;(b) 当R1为乙基时,R3为甲基或甲氧基;(c) 当R2为氯时,R3和R4分别为C1-C4卤代烷基,C1-C4卤代烷氧基或C1-C4烷氧基;(d) 当R2为甲基或乙基时,R1为氢;(e) 当R3为氢时,R4为2-甲基,卤素或甲氧基;(f) 如果M为N,则R3为C1-C4烷氧基,C1-C4卤代烷基或C1-C4卤代烷氧基,且R1不为乙基;(g) 如果R1为乙烯基,则M为N。其中草甘膦化合物的公式为##STR1##其中R1为氢,甲基,乙基,苯基,2-甲基苯基,3-三氟甲基苯基,苄基,2-甲基苄基或乙烯基;R2为氢,甲基,乙基或氯;R3为C1-C4烷基,C1-C4烷氧基,C1-C4卤代烷基,硝基,对甲苯氧基或对氯苯氧基;R4为氢或2,4-或5-位的甲基,甲氧基,三氟甲氧基或卤素基;m为--CH或N;X为O或NOR5,其中R5为甲基或乙基。