A N-acyl amino acid derivative having the formula:
wherein R1 represents an alkyl group, and R2 represents a straight-chain or branched chain alkyl group, or a straight-chain or branched chain alkyl group substituted by a carboxyl group; or R1 and R2, together with the carbon atom to which they bond, form a ring structure optionally substituted by an alkyl group; or R1 and R3, together with the carbon atom to which they bond, form a vinylidene group optionally substituted by one or two straight-chain or branched chain alkyl groups; R3 represents a hydrogen atom or an alkyl group and R4 represents a halogen atom, and salts thereof.
These compounds have a selective herbicidal effect.
                            一种 N-酰基
氨基酸衍
生物,其式如下
其中 R1 代表烷基,R2 代表直链或支链烷基,或被羧基取代的直链或支链烷基;或 R1 和 R2 与它们结合的碳原子一起形成可选择被烷基取代的环状结构;或 R1 和 R3 与它们结合的碳原子一起形成可选择被一个或两个直链或支链烷基取代的亚
乙烯基;R3 代表氢原子或烷基,R4 代表卤素原子,以及它们的盐。
这些化合物具有选择性除草效果。