申请人:Imperial Chemical Industries PLC
公开号:US05186733A1
公开(公告)日:1993-02-16
Herbicides have the formula ##STR1## in which R is hydrogen, mono- or poly-halo, mono- or di-(C.sub.1 -C.sub.4 alkyl), C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkoxy, phenoxy or nitro; R.sub.1 is hydrogen or C.sub.1 -C.sub.4 alkyl; R.sub.3 is C.sub.1 -C.sub.6 alkyl; R.sub.2 is C.sub.2 -C.sub.4 alkyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl, optionally substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkoxy, one or more halogens, or two C.sub.1 -C.sub.4 alkoxy groups, or one C.sub.1 -C.sub.4 alkyl and one C.sub.1 -C.sub.4 alkoxy group, phenyl-(C.sub.1 -C.sub.2)alkyl or pyridyl; or R.sub.1 and R.sub.2, and/or R.sub.3 and R.sub.4 respectively, taken together with the nitrogen atom, form a 4-8 member ring, optionally including an oxygen heteroatom; and R.sub.4 is C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl, phenyl, optionally substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl, C.sub.1 -C.sub.4 haloalkoxy, one or more halogens, or two C.sub.1 -C.sub.4 alkoxy groups, or one C.sub.1 -C.sub.4 alkyl and one C.sub.1 -C.sub.4 alkoxy group, phenyl-(C.sub.1 -C.sub.2 alkyl) or pyridyl; provided that if R.sub.1 is hydrogen, R.sub.2 is alkyl or cycloalkyl.
除草剂的化学式为## STR1##其中R为氢,单或多卤素,单或双(C.sub.1-C.sub.4烷基),C.sub.1-C.sub.4烷氧基,C.sub.1-C.sub.4卤代烷氧基,苯氧基或硝基; R.sub.1为氢或C.sub.1-C.sub.4烷基; R.sub.3为C.sub.1-C.sub.6烷基; R.sub.2为C.sub.2-C.sub.4烷基,C.sub.3-C.sub.6环烷基,苯基,可以选择用C.sub.1-C.sub.4烷基,C.sub.1-C.sub.4卤代烷基,C.sub.1-C.sub.4卤代烷氧基,一个或多个卤素或两个C.sub.1-C.sub.4烷氧基,或者一个C.sub.1-C.sub.4烷基和一个C.sub.1-C.sub.4烷氧基,苯基-(C.sub.1-C.sub.2)烷基或吡啶基进行取代; 或者R.sub.1和R.sub.2,和/或R.sub.3和R.sub.4分别与氮原子一起形成一个4-8成员环,可以包括一个氧杂原子;并且R.sub.4为C.sub.1-C.sub.6烷基,C.sub.3-C.sub.6环烷基,苯基,可以选择用C.sub.1-C.sub.4烷基,C.sub.1-C.sub.4卤代烷基,C.sub.1-C.sub.4卤代烷氧基,一个或多个卤素或两个C.sub.1-C.sub.4烷氧基,或者一个C.sub.1-C.sub.4烷基和一个C.sub.1-C.sub.4烷氧基,苯基-(C.sub.1-C.sub.2烷基)或吡啶基; 前提是如果R.sub.1为氢,则R.sub.2为烷基或环烷基。