wherein:
L is selected from specific optionally substituted aryl and benzyl groups;
Ra and Rb are independently CH3 or C2H5;
Rc is H, C(O)R1, C(O)NR2R3 or C02R4;
R1-R4 are aliphatic groups, or R2 may be H;
R is H or CH3;
Rd is lower alkyl; and
A is a substituted mono- or bicyclic heterocyclic group; and their agriculturally suitable salts, exhibit herbicidal and plant growth regulant activities. They may be formulated for agricultural use in conventional manner.
The compounds of Formula I may be made e.g. by reacting
The compounds for Formula III may be made e.g. by reacting
The compounds of Formula II may be made by reacting a compound of Formula III with hydroxylamine and optional transformation of the hydroxyimino group.
其中:
L 选自特定的任选取代的芳基和苄基;
Ra 和 Rb 独立地为
CH3 或
C2H5;
Rc 是 H、C(O)R1、C(O)NR2R3 或 C02R4;
R1-R4 是脂肪族基团,或 R2 可以是 H;
R 是 H 或
Rd 是低级烷基;以及
A 是取代的单环或双环杂环基团;以及它们在农业上适用的盐类,具有除草和植物生长调节活性。它们可按常规方法配制成农用制剂。
式 I 化合物可通过以下反应制得,例如
式 III 的化合物可通过以下反应制成
式 II 的化合物可通过式 III 的化合物与
羟胺反应并任选转化羟基亚
氨基制得。