Pyridyloxypyrimidine derivatives, preparation process thereof, and herbicidal compositions containing the same as active ingredients
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0435186A2
公开(公告)日:1991-07-03
Pyridyloxypyrimidine derivatives represented by the following formula [I]:
wherein R means a formyl group or an acetal group represented by
R¹ and R² being the same or different and individually denoting an alkyl group having 1-4 carbon atoms or R¹ and R² being coupled together and denoting an alkylene group, R³, having 2-3 carbon atoms; preparation processes of the derivatives; and herbicidal compositions containing one or more of the derivatives as an active ingredient.
下式[I]代表的吡啶氧基嘧啶衍生物:
其中 R 指甲酰基团或乙缩醛基团,其代表为
R¹和R²相同或不同,单独表示具有1-4个碳原子的烷基,或R¹和R²连接在一起,表示具有2-3个碳原子的亚烷基R³;衍生物的制备工艺;以及含有一种或多种衍生物作为活性成分的除草组合物。
US5129937A
申请人:——
公开号:US5129937A
公开(公告)日:1992-07-14
Pyridyloxypyrimidine derivatives, preparation process thereof, and
申请人:Mitsui Toatsu Chemicals Incorporated
公开号:US05129937A1
公开(公告)日:1992-07-14
Herbicidally active pyridyloxypyrimidines represented by the following formula [I]: ##STR1## wherein R means a formyl group or an acetal group represented by ##STR2## R.sup.1 and R.sup.2 being the same or different and individually denoting an alkyl group having 1-4 carbon atoms or R.sup.1 and R.sup.2 being coupled together and denoting an alkylene group, R.sup.3, having 2-3 carbon atoms; are prepared by reacting 2 formyl-3-hydroxypyridine or 3-hydroxy-2-pyridine carboxaldehyde acetal with 2 halogeno-4,6 dimethoxypyrimidine in the presence of a base.