申请人:Korea Institute of Science and Technology
公开号:US05691278A1
公开(公告)日:1997-11-25
An oxazolinone derivative compound, represented by the general formula I, shows superior herbicidal activity against, especially, dicotyledonous vegetables. It is effective upon applying both before and after the sprouting of vegetables. It is prepared by condensating an .alpha.-amino acid represented by the general formula II with an acid chloride represented by the general formula III, to give an acyl .alpha.-amino acid represented by the following formula IV: reacting the acyl .alpha.-amino acid with acetic anhydride; and dehydrating the resulting adduct: ##STR1## wherein, R represents a lower alkyl group or a phenyl group containing halogen, lower alkyl or trifluoromethyl group; X represents halogen atom, carbomethoxy group, nitro group, or halogen or trifluoromethyl-substituted phenoxy group, being the same or different from one another; A represents nitrogen or carbon atom; and n is an integer of 1 to 3.
一种由一般式I表示的噁唑烷酮衍生物化合物,对特别是二子叶植物具有优异的除草活性。它在蔬菜发芽前和发芽后都有效。它是通过将由一般式II表示的α-氨基酸与由一般式III表示的酸氯化物缩合,得到由以下式IV表示的酰基α-氨基酸:与乙酸酐反应;并脱水所得的加合物制备的:其中,R表示低碳基或含有卤素、低碳基或三氟甲基基团的苯基;X表示卤素原子、羧甲氧基基团、硝基或卤素或三氟甲基取代的苯氧基基团,可以相同或不同;A表示氮或碳原子;n为1至3的整数。