A compound having the general formula ##STR1## wherein R.sub.1 is alkyl having 1-3 carbon atoms; R.sub.2 is alkyl having 1-3 carbon atoms, allyl, propargyl or haloalkenyl; and A is selected from the group consisting of ##STR2## wherein R.sub.3 is --SO.sub.2 R.sub.6 group, ##STR3## R.sub.4 is hydrogen, alkyl having 1-6 carbon atoms; phenyl or halophenyl; R.sub.5 is alkyl having 1-3 carbon atoms; X is oxygen or sulfur; and n is 0 or 1; wherein R.sub.6 is alkyl having 1-6 carbon atoms, haloalkyl having 1-6 carbon atoms or propenyl; R.sub.7 is hydrogen or alkyl having 1-4 carbon atoms; R.sub.8 is hydrogen, alkyl having 1-6 carbon atoms; propenyl or methoxy; R.sub.9 is hydrogen, alkyl having 1-8 carbon atoms, haloalkyl having 1-3 carbon atoms, alkoxy having 1-6 carbon atoms, propenyl or phenyl substituted with methyl; and Y and Z are oxygen or sulfur; and a metal salt or a quaternary ammonium salt of a compound defined herein above. The compound is useful as a herbicide.
                            一种具有一般式 ##STR1## 的化合物,其中R.sub.1是具有1-3个碳原子的烷基;R.sub.2是具有1-3个碳原子的烷基,烯丙基,
丙炔基或卤代烯烃基;A选自以下组中的一种 ##STR2## 其中R.sub.3是--SO.sub.2 R.sub.6基团,##STR3## R.sub.4是氢,具有1-6个碳原子的烷基;苯基或卤代苯基;R.sub.5是具有1-3个碳原子的烷基;X是氧或
硫;n为0或1;其中R.sub.6是具有1-6个碳原子的烷基,具有1-6个碳原子的卤代烷基或
丙烯基;R.sub.7是氢或具有1-4个碳原子的烷基;R.sub.8是氢,具有1-6个碳原子的烷基;
丙烯基或甲氧基;R.sub.9是氢,具有1-8个碳原子的烷基,具有1-3个碳原子的卤代烷基,具有1-6个碳原子的烷氧基,
丙烯基或被甲基取代的苯基;Y和Z是氧或
硫;以及上述化合物的
金属盐或季
铵盐。该化合物可用作
除草剂。