申请人:Chevron Research Company
公开号:US03978123A1
公开(公告)日:1976-08-31
Compounds of the formula ##EQU1## wherein R is alkyl of 1 to 6 carbon atoms or aryl of 6 to 12 carbon atoms substituted with 0 to 5 halogen atoms of atomic number 9 to 35, nitro groups, alkyl groups of 1 to 4 carbon atoms or alkoxy groups of 1 to 4 carbon atoms; one of R.sup.1 or R.sup.2 is alkyl of 1 to 6 carbon atoms or cycloalkyl of 5 to 6 carbon atoms and the other is aryl of 6 to 12 carbon atoms substituted with 0 to 5 halogen atoms of atomic number 9 to 35, nitro groups, alkyl groups of 1 to 4 carbon atoms or alkyoxy groups of 1 to 4 carbon atoms or trifluoromethyl; R.sup.3 is hydrogen or alkyl of 1 to 4 carbon atoms and X is sulfur, SO, SO.sub.2 or oxygen, with the proviso that when X is oxygen, R.sup.1 is aryl or substituted aryl. The ureas find use as herbicides in both pre- and post-emergent applications.
式为##EQU1##的化合物,其中R是1至6个碳原子的烷基或6至12个碳原子的芳基,取代为0至5个原子序数为9至35的卤素原子、硝基基团、1至4个碳原子的烷基基团或1至4个碳原子的烷氧基团;R.sup.1或R.sup.2中的一个是1至6个碳原子的烷基或5至6个碳原子的环烷基,另一个是6至12个碳原子的芳基,取代为0至5个原子序数为9至35的卤素原子、硝基基团、1至4个碳原子的烷基基团或1至4个碳原子的烷氧基团或三氟甲基;R.sup.3是氢或1至4个碳原子的烷基,X是硫、SO、SO.sub.2或氧,但当X是氧时,R.sup.1是芳基或取代芳基。这些脲类化合物在除草剂的前期和后期应用中有用。