N-[1-(Thienyl)alkyl]amine derivative of the formula: ##STR1## which has excellent herbicidal activity against lowland annual weeds and upland weeds, can be prepared by reacting a thiophen derivative of the formula: ##STR2## with an aldehyde of the formula: ACHO and an amide of the formula: NH.sub.2 --CO--R in the presence of formic acid or a mixture of formic acid with phosphoric acid wherein Z is halogen, alkyl or alkoxy group; (n) is 0, 1 or 2; A is hydrogen or alkyl group; R is alkyl group, group of the formula: ##STR3## in which X and Y are hydrogen, alkyl group, haloalkyl group, alkoxy group, alkoxymethyl group or halogen, or group of the formula: ##STR4## in which Z and (n) are the same as defined above.
该公式为:##STR1## 的N-[1-(Thienyl)alkyl]胺衍
生物具有优异的除草活性,可用以下方法制备:在
甲酸或
甲酸与
磷酸混合物的存在下,将以下化合物反应:##STR2## 其中Z为卤素,烷基或烷氧基;(n)为0、1或2;A为氢或烷基;R为烷基,以下式的基团:##STR3## 其中X和Y为氢、烷基、卤代烷基、烷氧基、烷氧甲基或卤素,或以下式的基团:##STR4## 其中Z和(n)的定义与上述相同。