A triazine derivative, a herbicide containing the same as an effective ingredient and the production of said derivative represented by general formula (I) or (II), [wherein X1represents H, an alkyl, alkoxy or alkylthio group each having 1-4 carbon atoms, and alkyl, alkoxy or alkylthio group each having 1-4 carbon atoms and substituted by halogen, or a halogen atom, n represents an integer of 1-4, Z represents O or S, R1 represents a C1-C4 alkyl group, R2 represents a C1-C4 alkyl group substituted by halogen and R3 represents NH2, NHCOR' or N = CHR6 (wherein R' represents H, a C1-C4 alkyl group, a C1-C4 substituted alkyl group, a C3-C8 cycloalkyl group or a C2-C5 alkenyl group and R6 represents an alkyl, alkoxy or alkylamino group each having 1-4 carbon atoms)]. These compounds are produced by reacting a salt of corresponding benzofuranylal- kylamine with cyanoguanidine to prepare a salt of benzofura- nylbiguanide and then by reacting it with an ester of the general formula R2 COOR" (wherein R2 represents a C1-C4 alkyl group substituted by halogen and R6 represents a Ci-C4 alkyl group) to prepare a triazine derivative (R3 in the general formulas I, II represents an NH2 group provided that the NH2 group can be changed optionally to other R3).
一种三嗪衍
生物,一种含有三嗪衍
生物作为有效成分的
除草剂,以及通式(I)或(II)代表的上述衍
生物的生产方法,[其中X1代表H,各自具有1-4个碳原子的烷基、烷氧基或
硫代烷基,以及各自具有1-4个碳原子并被卤素取代的烷基、烷氧基或
硫代烷基,或卤素原子,n代表1-4的整数、Z代表O或S,R1代表C1-C4烷基,R2代表被卤素取代的C1-C4烷基,R3代表NH2、NHCOR'或N=CHR6(其中R'代表H、C1-C4烷基、C1-C4取代的烷基、C3-C8环烷基或C2-C5烯基,R6代表各自具有1-4个碳原子的烷基、烷氧基或烷基
氨基)]。这些化合物的制备方法是:将相应的
苯并呋喃醛基胺盐与
氰基
胍反应,制备
苯并呋喃基双
胍盐,然后与通式 R2 COOR"(其中 R2 代表被卤素取代的 C1-C4 烷基,R6 代表 Ci-C4 烷基)的酯反应,制备三嗪衍
生物(通式 I、II 中的 R3 代表 NH2 基团,条件是 NH2 基团可选择性地转变为其他 R3)。