The present invention provides a pyrimidine derivative represented by the formula:
1
wherein R
1p
and R
1q
are the same or different, and each represents (1) hydrogen, (2) halogen, (3) a C
1-6
alkyl group which may be substituted or (4) a C
1-6
alkoxy group, and so on,
R
2
is halogen, a C
1-6
alkyl group, cyano group, and so on, Ar is a phenyl group which may be substituted or is a condensed hetero ring which may be substituted, which has excellent selective herbicidal activity, and a herbicide containing the derivative.
本发明提供了一种由以下式子表示的
嘧啶衍
生物:1其中R1p和R1q相同或不同,每个代表(1)氢、(2)卤素、(3)可被取代的C1-6烷基或(4)C1-6烷氧基等;R2为卤素、C1-6烷基、
氰基等;Ar为苯基,可以被取代,或为可以被取代的融合杂环,该衍
生物具有优异的选择性除草活性,以及含有该衍
生物的
除草剂。