申请人:Ciba-Geigy Corporation
公开号:US04014677A1
公开(公告)日:1977-03-29
The present invention concerns new 5-nitropyrimidine derivatives and their acid addition salts as well as compositions containing them and their use, for selective pre- and post-emergent combating of weeds and for diminishing the growth of lawn, cereals and suckers. The new 5-nitropyrimidines have the formula ##STR1## wherein R.sub.1 is alkyl with 2-7 carbon atoms, alkenyl or cycloalkyl; R.sub.2 is optionally substituted lower alkyl, alkoxy or alkylthio, alkenyloxy or alkenylthio, cycloalkoxy or cycloalkylthio; R.sub.3 is hydrogen, lower alkyl, haloalkyl, alkoxy, alkylthio or dialkylamino.
本发明涉及新的5-硝基嘧啶衍生物及其酸盐,以及含有它们的组合物,以及它们的用途,用于选择性的预防和后期防治杂草,并减少草坪、谷物和幼枝的生长。新的5-硝基嘧啶具有以下结构式:其中R.sub.1是具有2-7个碳原子的烷基、烯基或环烷基;R.sub.2是可选择地取代的较低烷基、烷氧基或烷硫基、烯氧基或烯硫基、环烷氧基或环烷硫基;R.sub.3是氢、较低烷基、卤代烷基、烷氧基、烷硫基或二烷基氨基。