申请人:Imperial Chemical Industries Limited
公开号:US04116674A1
公开(公告)日:1978-09-26
A process of severely damaging or killing unwanted plants, which comprises applying to the plants, or to the growth medium thereof, a herbicidally effective amount of pyrimidine compound of the formula: ##STR1## or a herbicidal acid addition salt thereof, wherein R.sup.1 is an alkyl radical of 1 to 6 carbon atoms, cycloalkyl or alkenyl; R is a hydrogen atom or an alkyl or alkenyl radical of from 1 to 12 carbon atoms, which may be substituted by a phenyl radical; or R.sup.1 and R taken together form a trimethylene or tetramethylene radical; X is either (a) an --NR.sup.3 R.sup.4 radical wherein each of the groups R.sup.2 and R.sup.4 is a hydrogen atom or an alkyl or alkenyl radical of 1 to 3 carbon atoms or cycloalkyl, or --NR.sup.3 R.sup.4 constitutes a pyrrolidinyl, piperidinyl or morpholinyl ring; or (b) a group --OR.sup.5 wherein R.sup.5 is an alkyl or alkenyl radical of 1 to 10 carbon atoms or cycloalkyl; and R.sup.6 and R.sup.7 each represent hydrogen or an alkyl or alkenyl radical of 1 to 8 carbon atoms, or cycloalkyl, or R.sup.6 and R.sup.7, taken together with the nitrogen atom to which they are attached constitute a pyrrolidinyl, piperidinyl, or morpholinyl ring; provided that R may be hydrogen only when X is an OR.sup.5 group.
一种严重损害或杀死不需要的植物的过程,包括向植物或其生长介质中施加具有除草作用的嘧啶化合物的有效量,该化合物的化学式为:##STR1## 或其除草酸盐,其中R.sup.1是1至6个碳原子的烷基基团、环烷基或烯基;R是氢原子或1至12个碳原子的烷基或烯基基团,可以被苯基替换;或R.sup.1和R在一起形成三亚甲基或四亚甲基基团;X是(a)--NR.sup.3R.sup.4基团,其中R.sup.2和R.sup.4各自是1至3个碳原子的烷基或烯基基团或环烷基,或--NR.sup.3R.sup.4构成吡咯烷基、哌啶基或吗啉基环;或(b)--OR.sup.5基团,其中R.sup.5是1至10个碳原子的烷基或烯基基团或环烷基;R.sup.6和R.sup.7各自代表氢或1至8个碳原子的烷基或烯基基团或环烷基,或R.sup.6和R.sup.7与它们所附着的氮原子一起构成吡咯烷基、哌啶基或吗啉基环;但当X是OR.sup.5基团时,R只能是氢原子。