申请人:SUNTORY LIMITED
公开号:EP0479420A2
公开(公告)日:1992-04-08
A benzoxazine derivative having the formula (I) and a salt thereof:
wherein A represents N or a CY group, where Y represents a hydrogen atom or a halogen atom;
X represents a halogen atom; Z represents an oxygen atom or sulfur atom;
R¹ represents a hydrogen atom, a lower alkyl group which may be also substituted, where the substituent may be either one of a halogen atom, a lower alkoxy group or an aryl group, a lower alkenyl group, a lower alkynyl group or an aliphatic acyl group;
R² represents a hydrogen atom or a lower alkyl group;
R³ represents a carboxyl group which may be esterified or amidated, an aliphatic acyl group which may be also substituted, where the substituent may be either one of a halogen atom, a diazo group or a hydroxyl group which may be also acylated, a lower alkoxythiocarbonyl group, a C(=NR⁴)R⁵ group, where R⁴ represents a hydroxyl group, a lower alkoxy group, a lower alkenyloxy group, a lower alkynyloxy group, an amino group, a lower alkylamino group or an alkoxycarbonylalkyloxy group, R⁵ represents a lower alkyl group, a C(OR⁶)₂R⁷ group, where R⁶ represents a lower alkyl group or a group for forming an alkylen group with two R⁶,s, R⁷ represents a lower alkyl group or a C(R⁸)₂OH group, where R⁸ represents a lower alkyl group and a herbicide containing the same as an effective ingredient.
具有式 (I) 的苯并恶嗪衍生物及其盐:
其中 A 代表 N 或 CY 基团,Y 代表氢原子或卤素原子;
X 代表卤素原子; Z 代表氧原子或硫原子;
R¹ 代表氢原子、也可被取代的低级烷基,其中取代基可以是卤素原子、低级烷氧基或芳基、低级烯基、低级炔基或脂族酰基中的一种;
R² 代表氢原子或低级烷基;
R³ 代表可被酯化或酰胺化的羧基、也可被取代的脂肪酰基,其中的取代基可以是卤素原子、重氮基团或羟基中的一种、重氮基团或可被酰化的羟基、低级烷氧基硫代羰基、C(=NR⁴)R⁵ 基团,其中 R⁴ 代表羟基、低级烷氧基、低级烯氧基、低级炔氧基、R⁵ 代表低级烷基、C(OR⁶)₂R⁷ 基团,其中 R⁶ 代表低级烷基或用于与两个 R⁶ 形成亚烷基的基团、s, R⁷ 代表低级烷基或 C(R⁸)₂OH基团,其中 R⁸ 代表低级烷基和含有相同有效成分的除草剂。