Triazole phosphoric acid derivatives and their use as herbicides
申请人:Zeneca Limited
公开号:US05393732A1
公开(公告)日:1995-02-28
A herbicidal compound of formula (I) ##STR1## or a salt, tautomer or cyclic derivative thereof; where R.sup.1 and R.sup.2 are hydrogen and A is an optionally substituted saturated or unsaturated chain or ring of three carbon atoms. Methods for preparing these compounds, intermediates used in the preparation and herbicidal compositions containing them are also described and claimed.
Triazole phosphonic acid derivatives and their use as herbicides
申请人:Zeneca Limited
公开号:US05922644A1
公开(公告)日:1999-07-13
A herbicidal compound of formula (I) ##STR1## or a salt, tautomer or cyclic derivative thereof; where R.sup.1 and R.sup.2 are hydrogen and A is an optionally substituted saturated or unsaturated chain or ring of three carbon atoms. Methods for preparing these compounds, intermediates used in the preparation and herbicidal compositions containing them are also described and claimed.
The Design and Synthesis of Inhibitors of Imidazoleglycerol Phosphate Dehydratase as Potential Herbicides
作者:John M. Cox、Timothy R. Hawkes、Peter Bellini、Russell M. Ellis、Roger Barrett、Joseph J. Swanborough、Sally E. Russell、Peter A. Walker、Nigel J. Barnes、Andrew J. Knee、Terence Lewis、Paul R. Davies
synthetic strategy toward phosphahelicenes containing a terminal phosphinine ring has been explored. The 4-phenyl-6-methyl-2-phospha[7]helicene was prepared from starting 2-bromobenzo[c]phenanthrene in 12% overall yield in 12 steps. The synthetic approach involves introduction of the phosphorus function prior to photocyclization forming the final helicene skeleton, followed by the formation of a phosphorus
已经探索了针对含有末端膦环的磷酸螺旋烯的合成策略。4-phenyl-6-methyl-2-phospha[7]helicene 由起始 2-溴苯并[ c ]菲在 12 个步骤中以 12% 的总产率制备。合成方法包括在光环化形成最终的螺旋骨架之前引入磷功能,然后形成磷六环。通过 X 射线晶体学证实了具有末端膦环的第一个 phosphahelicene 的结构。