申请人:Bayer Aktiengesellschaft
公开号:US04797484A1
公开(公告)日:1989-01-10
A process for the preparation of a guanidine derivative of the formula ##STR1## in which R.sup.1 represents hydrogen or the radical R.sup.5 --S(O).sub.m --, m represents the numbers zero, 1 or 2 and R.sup.5 represents an optionally substituted radical from the series comprising alkyl, aralkyl, aryl and heteroaryl, R.sup.2 represents a six-membered aromatic heterocyclic structure which contains at least one nitrogen atom and is substituted, and R.sup.8 represents an optionally substituted radical from the series comprising C.sub.1 -C.sub.6 -alkyl, alkenyl, alkinyl, cycloalkyl, phenylalkyl and aryl, which comprises reacting a guanidine derivative of the formula ##STR2## with one or two molar equivalent(s), respectively, of a halogen/sulphur compound of the formula R.sup.5 --S(O).sub.m --X.sup.1 in which X.sup.1 represents fluorine, chlorine or bromine. The compounds are herbicidally active.
一种制备公式##STR1##的胍啶衍生物的方法,其中R.sup.1代表氢或基团R.sup.5--S(O).sub.m--,m代表数字零、1或2,R.sup.5代表一种可选择取代的基团,包括烷基、芳基烷基、芳基和杂环芳基,R.sup.2代表含有至少一个氮原子的六元芳香杂环结构,且被取代,R.sup.8代表一种可选择取代的基团,包括C.sub.1-C.sub.6-烷基、烯基、炔基、环烷基、苯基烷基和芳基,所述方法包括将公式##STR2##的胍啶衍生物与公式R.sup.5--S(O).sub.m--X.sup.1的卤素/硫化合物的一个或两个摩尔当量反应,其中X.sup.1代表氟、氯或溴。这些化合物具有除草活性。