Phenylsulfonyl ureas, processes for their preparation, and...

C - Chemistry – Metallurgy – 07 – D

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C07D 491/052 (2006.01) A01N 47/36 (2006.01) C07C 311/37 (2006.01) C07C 311/46 (2006.01) C07D 207/27 (2006.01) C07D 211/76 (2006.01) C07D 239/28 (2006.01) C07D 251/12 (2006.01) C07D 275/03 (2006.01) C07D 401/12 (2006.01) C07D 403/12 (2006.01) C07D 417/12 (2006.01) C07D 521/00 (2006.01)

Patent

CA 2174127

Compounds of the formula (I) and their salts: (see formula I) in which R1 is a CO-Q-R8, where R8 = H or R R2 and R3 are H or (C1-C4)alkyl, R4 is H, R, RO, OH, RCO, RSO2, PhSO2 R5 is RSO2, PhSO2, PhCO, RNHSO2, R2NSO2, RCO, CHO, COCOR', CW-T-R9, CW-NR10R11, CW-N(R12)2 or R4 and R5 together are the chain (CH2)m B or -B1-(CH2)m1B- where B = SO2, CO; m = 3, 4; m1 - 2, 3; T and W = O, S; Q = O, S, NR13 where R13 = H, R; R6 = H, R, RO, RCO, ROCO, Hal, NO2, CN; R7 = H, CH3; R9 - R; R10, R11 - H, R; N(R12)2 = heterocycle A = pyrimidinyl and triazinyl radical or an analog thereof, where R = (substituted) aliphatic hydrocarbon radical, are suitable as selective herbicides. They are prepared by analogous processes via sulfonamides, some of which are new, of the formula (II): (see formula II)

L'invention concerne des composés de la formule (I) et leurs sels, tels qu'ils sont définis dans la première revendication. Dans la formule (I), R<1> désigne CO-Q-R<8>, où R<8> désigne H ou R; R<2>, R<3> désigne H ou alcoyle (C1-C4); R<4> désigne H, R, RO, OH, RCO, RSO2, PhSO2; R5 désigne RSO2, PhSO2, PhCO, RNHSO2, R2NSO2, RCO, CHO, COCOR', CW-T-R<9>, CW-NR<10>R<11>, CW-N(R<12>)2 où R<4>, R<5> désignent ensemble la chaîne (CH2)mB ou -B<1>-(CH2)m1B-, où B désigne SO2, CO; m vaut 3,4; et m<1> vaut 2,3; T, W désignent O, S; Q désigne O, S, NR<13>, où R<13> désigne H, R; R<6> désigne H, R, RO, RCO, ROCO, hal, NO2, CN; R<7> désigne H, CH3; R<9> désigne R; R<10>, R<11> désignent H, R; N(R<12>)2 désigne un hétérocycle; A désigne un résidu pyrimidinyle et triazinyle ou un analogue de ceux-ci et R désigne un résidu hydrocarbure aliphatique (substitué). Ces composés sont utiles comme herbicides sélectifs. Ils sont préparés par un procédé analogue sur la base de sulfonamides en partie nouvelles ayant la formule (II) (voir la revendication 4).

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