.alpha.-cyanoacrylates

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 255/30 (2006.01) C07C 323/12 (2006.01) C07C 323/60 (2006.01) C07C 327/22 (2006.01) C07D 295/185 (2006.01) C07D 305/08 (2006.01) C07D 307/18 (2006.01) C07D 307/20 (2006.01) C07D 307/22 (2006.01) C07D 309/14 (2006.01) C07D 319/06 (2006.01) C07D 331/04 (2006.01)

Patent

CA 2469716

.alpha.-Cyanoacrylates of the formula (I), where: R1 is ORa wherein Ra is hydrogen, substituted alkyl, branched alkyl, branched alkenyl, cycloloalkyl, heterocyclyl, aryl, phenylalkyl or alkyl~imino; is NRbRc wherein Rb is hydrogen, alkyl which may be substituted, alkenyl, alkynyl; Rc is hydrogen, alkyl which may be substituted alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, phenylalkyl or alkylimino; or Rb and Rc form an alkandiyl-chain which may be substituted; or is SRd wherein Rd is hydrogen, alkyl which may be substituted, alkenyl, alkynyl, cycloalkyl, heterocyclyl, aryl, phenylalkyl or alkylimino; R2 is alkyl which may be substituted; is alkenyl or alkynyl; R3 is alkyl may be substituted; is alkenyl or alkynyl; R4 is hydrogen, halogen, cyano or alkyl; and their agriculturally useful salts, processes and intermediates for their preparation; and the use of these compounds or of compositions comprising these compounds for controlling undesirable plants are described.

.alpha.-cyanoacrylates de formule (I). Dans ladite formule (I) R?1¿ : représente OR?a¿, R?a¿ représentant hydrogène, alkyle substitué, alkyle ramifié, alcényle ramifié, cycloalkyle, hétérocyclyle, aryle, phénylalkyle ou alkylimino ; représente NR?b¿R?c¿, R?b¿ représentant hydrogène, alkyle pouvant être substitué, alcényle, alcynyle ; R?c¿ représentant hydrogène, alkyle pouvant être substitué, alcényle, alcynyle, cycloalkyle, hétérocyclyle, aryle, phénylalkyle ou alkylimino, ou R?b¿ et R?c¿ formant une chaîne alcanediyle pouvant être substituée ; ou SR?d¿, R?d¿ représentant hydrogène, alkyle pouvant être substitué, alcényle, alcynyle, cycloalkyle, hétérocyclyle, aryle, phénylalkyle ou alkylimino. R?2¿ représente alkyle pouvant être substitué, alcényle ou alcynyle. R?3¿ représente alkyle pouvant être substitué ; alcényle ou alcynyle. R?4¿ représente hydrogène, halogène, cyano ou alkyle. L'invention porte également sur des sels desdits .alpha.-cyanoacrylates, utiles au plan agricole, sur leurs procédés et leurs intermédiaires pour leur préparation ; et sur l'utilisation desdits composés et ou de compositions comprenant lesdits composés pour la lutte contre les plantes indésirables.

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