申请人:PPG Industries, Inc.
公开号:US04263041A1
公开(公告)日:1981-04-21
Disclosed are compounds, for example, methyl N-[5-(2-chloro-4-trifluoromethylphenoxy)-2-nitrobenzoyl]carbamate; the process of making the compounds; and the method of controlling weeds such as yellow foxtail and johnsongrass when growing among crops with the compounds represented by Formula I: ##STR1## wherein X is hydrogen (H), chloro (Cl), or bromo (Br); Z is nitro (NO.sub.2), halogen, or cyano (CN); and R is an alkyl of up to four carbon atoms or ##STR2## where A is halogen, an alkyl of up to three carbon atoms, an alkoxy of up to three carbon atoms, an alkylthio of up to three carbon atoms; cyano (CN), trifluoromethyl (CF.sub.3), nitro (NO.sub.2), or CO.sub.2 R.sup.2, where R.sup.2 is an alkyl of up to four carbon atoms, and n is an integer of 0, 1, 2, or 3.
本发明涉及化合物,例如甲基N-[5-(2-氯-4-三氟甲基苯氧基)-2-硝基苯甲酰基]氨基甲酸酯; 制备该化合物的方法;以及利用式I所表示的化合物控制杂草,例如黄狗尾草和约翰草在作物中生长的方法:##STR1## 其中X是氢(H),氯(Cl)或溴(Br); Z是硝基(NO.sub.2),卤素或氰基(CN); R是碳数最多为四的烷基或##STR2##其中A是卤素,碳数最多为三的烷基,碳数最多为三的烷氧基,碳数最多为三的烷硫基; 氰基(CN),三氟甲基(CF.sub.3),硝基(NO.sub.2)或CO.sub.2 R.sup.2,其中R.sup.2是碳数最多为四的烷基,并且n是0,1,2或3的整数。