| 摘要 |
The present invention provides compounds of formula: <IMAGE> wherein X and Y are each independently selected from fluorine, chlorine, methyl or methoxy and one of X and Y may additionally be hydrogen; R is alkoxy of up to 6 carbon atoms, mono- or dialkylamino of up to 4 carbon atoms in the alkyl moiety, hydroxyamino, or alkoxyamino of up to 4 carbon atoms, m and p are independently selected from 1 to 4, and each W and each Z are independently selected from hydrogen, halo and haloalkyl containing 1 or 2 carbon atoms, and n is zero or one.
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