申请人:Bayer Aktiengesellschaft
公开号:US04988380A1
公开(公告)日:1991-01-29
A process for selectively combating weeds in crops, comprising applying to a locus in which such crops are growing or are to be grown a herbicidally effective amount of a difluoromethyl-thiadiazolyl-oxy-acetamide of the formula ##STR1## in which R.sup.1 stands for hydrogen or for an optionally substituted radical from the group consisting of alkyl, alkenyl, alkinyl and aralkyl, R.sup.2 stands for an optionally substituted radical from the group consisting of alkyl, alkenyl, alkinyl, cycloalkyl, cycloalkenyl, aralkyl, aryl, alkoxy, alkenyloxy and alkinyloxy, or R.sup.1 and R.sup.2 together with the nitrogen atom to which they are bonded form an optionally substituted, saturated or unsaturated heterocycle which can contain further hetero atoms and to which a benzo group may be fused. Compounds wherein R.sup.1 is C.sub.2 -C.sub.4 -alkyl and R.sup.2 is optionally substituted phenyl are new as are intermediates of the formula ##STR2## in which x is 0 or 2.
一种用于选择性对抗作物中杂草的方法,包括向作物生长或将要生长的位置施加一定量具有除草作用的二氟甲基噻二唑氧基乙酰胺,其化学式为##STR1##其中R.sup.1代表氢或来自包括烷基、烯基、炔基和芳基的可选择取代基团,R.sup.2代表来自包括烷基、烯基、炔基、环烷基、环烯基、芳基、烷氧基、烯氧基和炔氧基的可选择取代基团,或R.sup.1和R.sup.2与它们结合的氮原子一起形成可选择取代、饱和或不饱和的杂环,该杂环可以含有进一步的杂原子,并且可以与苯基融合。其中R.sup.1为C.sub.2-C.sub.4-烷基,R.sup.2为可选择取代苯基的化合物是新的,中间体化合物的化学式为##STR2##其中x为0或2。