| 摘要 |
Novel compounds of formula (I), in which R1 is CH3, C2H5 or C3H7, R2 is CH3 or a group CH(R3)-COOR4, R3 is H, CH3 or C2H5, R4 is C1-6alkyl or C2-6(alkoxyalkyl), R5 is CH3 or C2H5, Q is N or CH and W is O or NH whereby, where W is O, R5 is also H and where Q is CH and W is O, then R1 is C3H7 and/or R2 is a group CH(R3)-COOR4 in which R4 contains more than 3 carbon atoms, the synthesis of such phosphinates, herbicidal compositions comprising the novel phosphinates and the use of said novel compounds for the control of weeds. |
