申请人:Sumitomo Chemical Company, Limited
公开号:US04593094A1
公开(公告)日:1986-06-03
A condensed phenylurazol of the formula: ##STR1## wherein X is a chlorine atom or a bromine atom, Y and Z are each an oxygen atom or a sulfur atom and R is a C.sub.1 -C.sub.3 alkyl group, an allyl group or a propargyl group and n is an integer of 4 or 5, which is useful as a herbicide. The condensed phenylurazols of the above formula wherein Z is an oxygen atom and n is an integer of 4 can be produced by treatment of a urea of the formula: ##STR2## wherein R' is a lower alkyl group (e.g. methyl, ethyl, n-propyl, isopropyl) and X, Y and R are each as defined above with a base (e.g. sodium methoxide, sodium hydroxide, potassium hydroxide) in an inert solvent (e.g. water, toluene, benzene, methanol, ethanol) at a temperature of 0.degree. to 200.degree. C.
以下是翻译结果:
一种化学式为##STR1##的缩合苯基脲,其中X为氯原子或溴原子,Y和Z均为氧原子或硫原子,R为C.sub.1-C.sub.3烷基,丙烯基或丙炔基,n为4或5的整数,可用作除草剂。上述化学式中Z为氧原子,n为4的缩合苯基脲可通过将化学式为##STR2##的脲与碱(例如甲醇钠、氢氧化钠、氢氧化钾)在惰性溶剂(例如水、甲苯、苯、甲醇、乙醇)中在0°C至200°C的温度下处理而制得,其中R'为低碳基(例如甲基、乙基、正丙基、异丙基),X、Y和R的定义如上所述。