Derivatives of 4-(methylphosphinyl)-2-oxobutanoic acid, herbicidal compositions containing them, and intermediates and methods for their production
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:EP0030424A2
公开(公告)日:1981-06-17
There are described compounds of the formula
in which R5 is methyl or halomethyl,
R2 is -CN, -CONRyRz, -COOR6 or -COSR6,
R1 and R6 each represent hydrogen, a cation or an optionally substituted alkyl, alkenyl, alkynyl or aryl,
Ry and Rz each represent hydrogen, alkyl or aryl,
A represents hydrogen, or A and one of -XR3 and -ZR4 together form a double bond, and the other of -XR3 and -ZR4 represents -OR10 or -NHR11 in which R10 is alkyl or acyl and R11 is alkyl, aryl or acyl,
X and Z (when not forming part of a double bond with A), which may be the same or different, each represent oxygen, sulphur or a group -NR7-,
R7 represents hydrogen or alkyl,
R3 and R4 each represent alkyl or R3 and R4 together form an optionally substituted alkylene or arylene chain
or -XR3 and -ZR4 together form =C(CN)2 or =NR8, in which R8 represents alkoxy, benzyloxy, hydroxy, phenyl, -NHCONH2, -NHCSNH2 or -NH phenyl,
or one of -XR3 and -ZR4 is -OH (or an ester or ether thereof) and the other is hydrogen, -CN or -SO3⊖cation,
or -XR3 and -ZR4 together form carbonyl oxygen.
There are also described methods for making the compounds and herbicidal compositions containing them.
所述化合物的化学式为
其中 R5 为甲基或卤代甲基、
R2 是-CN、-CONRyRz、-COOR6 或-COSR6、
R1 和 R6 分别代表氢、阳离子或任选取代的烷基、烯基、炔基或芳基、
Ry 和 Rz 各自代表氢、烷基或芳基、
A 代表氢,或 A 与-XR3 和-ZR4 中的一个共同形成双键,且-XR3 和-ZR4 中的另一个代表-OR10 或-NHR11,其中 R10 为烷基或酰基,R11 为烷基、芳基或酰基、
X 和 Z(当不与 A 形成双键时)可以相同或不同,各自代表氧、硫或基团 -NR7-、
R7 代表氢或烷基、
R3 和 R4 各自代表烷基,或 R3 和 R4 共同形成任选取代的亚烷基或亚芳基链
或 -XR3 和 -ZR4 共同形成 =C(CN)2 或 =NR8,其中 R8 代表烷氧基、苄氧基、羟基、苯基、-NHCONH2、-NHCSNH2 或 -NH 苯基、
或-XR3 和-ZR4 中的一个是-OH(或其酯或醚),另一个是氢、-CN 或-SO3⊖阳离子、
或 -XR3 和 -ZR4 共同形成羰基氧。
还描述了制造这些化合物和含有它们的除草组合物的方法。