Isoxazolone derivatives having the formula ##STR1## wherein X is hydrogen atom, a lower alkyl group or a halogen atom; Y is hydrogen atom, a lower alkyl group or phenyl group; and R.sub.1 and R.sub.2 may be the same or different and each represents a lower alkyl group, a cycloalkyl group, an alkeyl group, an alkoxycarbonylalkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, a lower alkoxy group, a phenyl group which may be substituted with one to three substituents or an aralkyl group which may be substituted with one to three substituents in the aryl moiety. They are useful as plant growth regulators, more specifically herbicides and plant growth retardants, and prepared by reacting the corresponding N-halogenocarbonylisoxazolone with an amine or by reacting the corresponding 3-hydroxyisoxazole with a carbamoyl halide.
异噁唑酮衍
生物具有以下式##STR1##其中X是氢原子、较低的烷基基团或卤原子;Y是氢原子、较低的烷基基团或苯基;R.sub.1和R.sub.2可以相同也可以不同,每个代表较低的烷基基团、环烷基基团、烯基基团、炔基基团、较低的烷氧基团、苯基(可能被一个到三个取代基取代)或芳基基团(可能在芳基部分被一个到三个取代基取代)。它们可用作
植物生长调节剂,更具体地说是
除草剂和植物生长
抑制剂,并通过将相应的N-卤代羰基
异噁唑酮与胺反应或将相应的
3-羟基异噁唑与羰
酰卤反应制备。