Organophosphorus derivatives

Details Organophosphorus derivatives Organophosphorus derivatives

C - Chemistry, Metallurgy

07

F

260/310.1, 71/8.

C07F 9/30 (2006.01) A01N 57/18 (2006.01) C07F 9/32 (2006.01) C07F 9/6539 (2006.01)

Patent

CA 1170265

ABSTRACT COMPOUNDS There are described compounds of the formula I, Image I 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 - 2 - 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.theta. cation, or -XR3 and -ZR4 together form carbonyl oxygen There are also described methods for making the compounds and herbicidal compositions containing them.

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