Herbicidal ureas and isoureas, preparation and use thereof, and compositions containing them
申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0030139A2
公开(公告)日:1981-06-10
Compounds of the formula
[wherein R1 represents a (Ra0)2RC· or
group (in which Ra is CH3 or C2H5, R is H or optionally substituted hydrocarbyl and T is 0 or = N-OR1111 wherein R1111 is H or C1-4 alkyl or alkenyl) or a 1,3-dioxalan-2-yl, 1,3-dioxan-2-yl, 1,3-dithialan-2-yl, 1,3-dithian-2-yl, 1,3-dithialan-2-yl disulfone or 1,3-dithian-2-yl disulfone group, such group being optionally substituted at the 2-position by an optionally substituted hydrocarbyl group; R2 is H, F, Cl, Br, C1-3 alkyl, NO2, SOCH,, OCH3, SCH3, CF3 or N(CH3)2; R3 is H, F, Cl, Br or CH,; and P is
(wherein R. is H or CH3; R5 is H, CH3 or OCH3, W is O or S, R11V is an optionally substituted 1,3,5-triazin-2-yl, pyrimid-2-yl, pyrimid-4-yl,1,2,4-triazin-3-yl, pyrid-2-yl, tetrahydropyrano [2,3e] pyrimid-3-yl, tetrahydrofurano [2,3e] pyrimid-3-yl or cyclopenta[e]pyrimid-2-yl group, W1 is optionally substituted alkoxy or alkylthio and RV1 is an optionally substituted pyrimid-2-yl, 1,3,5-triazin-2-yl, tetrahydrofurano[2,3e] pyrimid-3-yl or cyclopenta[e] pyrimid-2-yl group] exhibit herbicidal and plant growth regulant activity. The compounds can be formulated for agricultural use in conventional manner.
The compounds can be prepared by many different processes including reaction of an appropriately substituted benzenesulfonylisocyanate containing an o-ketone functional group protected as the dithiane with an appropriate heterocyclic compound.
式中的化合物
[其中 R1 代表 (Ra0)2RC- 或
基团(其中 Ra 是 CH3 或 C2H5,R 是 H 或任选取代的烃基,T 是 0 或 = N-OR1111,其中 R1111 是 H 或 C1-4 烷基或烯基)或 1,3-二氧戊环-2-基、1,3-二氧戊环-2-基、1、2-基、1,3-二噻烷-2-基、1,3-二噻烷-2-基、1,3-二噻烷-2-基二砜或 1,3-二噻烷-2-基二砜基团,此类基团可任选在 2 位被任选取代的烃基取代;R2 是 H、F、Cl、Br、C1-3 烷基、NO2、SOCH、OCH3、SCH3、CF3 或 N(CH3)2; R3 是 H、F、Cl、Br 或 CH;和 P 是
(其中 R.是 H 或 CH3;R5 是 H、CH3 或 OCH3,W 是 O 或 S,R11V 是任选取代的 1,3,5-三嗪-2-基、嘧啶-2-基、嘧啶-4-基、1,2,4-三嗪-3-基、吡啶-2-基、四氢吡喃并[2,3e]嘧啶-3-基、四氢呋喃并[2,3e]嘧啶-3-基或环戊并[e]嘧啶-2-基、W1 是任选取代的烷氧基或烷硫基,RV1 是任选取代的嘧啶-2-基、1,3,5-三嗪-2-基、四氢呋喃并[2,3e]嘧啶-3-基或环戊并[e]嘧啶-2-基。这些化合物可按常规方法配制成农用制剂。
这些化合物可通过多种不同工艺制备,包括含有邻酮官能团作为二噻烷保护的适当取代的苯磺酰异氰酸酯与适当的杂环化合物反应。