Novel phosphorous esters of cyanohydrins, pesticidal compositions including same, and methods of controlling pests using same
申请人:UNION CARBIDE CORPORATION
公开号:EP0044214A2
公开(公告)日:1982-01-20
Novel phosphorous. esters of cyanohydrins which exhibit outstanding pesticidal activity. A method of controlling pests by subjecting the pests to a pesticidally active amount of a compound of this invention is also covered.
The esters have the general formula:
wherein X is 0 or S;
R and R1 are the same or different and are independently hydrogen, lower alkyl (C1-C15), whereby C3-C15 can be branched or unbranched, and wherein the alkyl chain can be substituted or unsubstituted with alkylthio, alkoxy, or one or more halo; cycloalkyl (C3-C8), alkenyl, phenyl, benzyl, pyridinyl, pyrimidinyl, furanyl, pyranyl, naphthalene, thiophene. all of which may be optionally substituted with one or more halogen, nitro, cyano, allyloxy, trihalomethyl, alkyl, alkylthio, alkoxy, or aryloxy, aryloxy alkyl, which can be further substituted with alkoxy, halogen, alkyl, or trihalomethyl groups; taken together R and R, may form a 5 or 6 membered carbocyclic ring.
R2 and R3 can be the same or different and are independently:
a) alkyl (C1-C10),
b) alkylthio (C,-Ca),
c) haloalkyl (C1-C8),
d) alkoxy (C1-C8) with the proviso that R2 and R3 may not be alkoxy at the same time,
e) alkyl or dialkyl amino (CI-Ca).
f) phenyl or benzyl which can be optionally substituted with one or more nitro, cyano, halogen, trihalomethyl, alkyl, alkoxy, alkylthio or aryloxy,
g) thioaromatic radicals, and
h) oxyaromatic radicals.
新颖的氰醇磷酯,具有出色的杀虫活性。本发明还涉及一种通过使害虫接触具有杀虫活性的本发明化合物来控制害虫的方法。
这些酯具有通式:
其中 X 为 0 或 S;
R和R1相同或不同,且独立地为氢、低级烷基(C1-C15),其中C3-C15可以是支链或非支链,且其中烷基链可以被烷硫基、烷氧基或一个或多个卤素取代或未被取代;环烷基(C3-C8)、烯基、苯基、苄基、吡啶基、嘧啶基、呋喃基、吡喃基、萘基、噻吩基。所有这些基团均可任选被一个或多个卤素、硝基、氰基、烯丙基氧基、三卤甲基、烷基、烷硫基、烷氧基或芳氧基、芳氧基烷基取代,后者可进一步被烷氧基、卤素、烷基或三卤甲基取代;R 和 R 合在一起可形成一个 5 或 6 个成员的碳环。
R2 和 R3 可以相同或不同,且各自独立:
a) 烷基(C1-C10)、
b) 烷硫基(C,-Ca)、
c) 卤代烷基(C1-C8)、
d) 烷氧基(C1-C8),但 R2 和 R3 不得同时为烷氧基、
e) 烷基或二烷基氨基(CI-Ca)
f) 苯基或苄基,可任选被一个或多个硝基、氰基、卤素、三卤甲基、烷基、烷氧基、烷硫基或芳氧基取代、
g) 硫代芳香族基,以及
h) 氧芳基。