申请人:Mitsui Toatsu Chemicals, Incorporated
公开号:US04986846A1
公开(公告)日:1991-01-22
Disclosed are herbicidally active pyrimidine derivatives of the formula ##STR1## wherein R represents a hydrogen atom or an etherifying group, e.g., a lower alkyl, lower alkenyl, lower alkynyl, phenyl-substituted lower alkenyl, lower haloalkenyl, cycloalkyl, substituted phenyl-substituted lower alkenyl or phenyl-substituted lower alkynyl group; or a group represented by the following formula: ##STR2## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group, X a halogen atom or a lower alkyl or lower alkoxyl group, m and n individually 0-2, and when m is 2, both Xs may be the same or different, and herbicidal compositions containing the same, alone or in combination with another herbicidally active compound, the pyrimidine derivatives being prepared by reaction of 2-(4,6-dimethoxy-2-pyrimidinyloxy)benzaldehyde with NH.sub.2 OR or with a salt of hydroxylamine followed by reaction with a halide of the formula RY wherein R has the same value as above and Y is Cl, Br or I.
揭示了具有以下式的除草活性嘧啶衍生物##STR1##其中R代表氢原子或醚化基团,例如,较低的烷基,较低的烯基,较低的炔基,苯基取代的较低烯基,较低的卤代烯基,环烷基,取代的苯基取代的较低烯基或苯基取代的较低炔基;或由以下式表示的基团:##STR2##其中R.sup.1代表氢原子或较低的烷基,X代表卤原子或较低的烷基或较低的烷氧基,m和n分别为0-2,当m为2时,两个X可能相同或不同,并且含有这些衍生物的除草组合物,单独或与另一种除草活性化合物结合使用,所述嘧啶衍生物通过2-(4,6-二甲氧基-2-嘧啶氧基)苯甲醛与NH.sub.2 OR或与羟胺盐反应,然后与具有上述相同值的R的卤化物RY反应,其中Y为Cl,Br或I制备而成。