| 摘要 |
This invention is concerned with esters of p-carbonylphenoxy-isobutyric acids of the general formulae: <IMAGE> (I) and <IMAGE> (Ia) WHEREIN R is a phenyl group substituted by one or two halogen atoms; R' is H, CH3, C6H5, SCH3, OCH3, or, SO2CH3; R'' is CH3 or C2H5; Y is C1-C4 alkoxy, phenoxy, phenoxy substituted by one or two halogen atoms, or, OCH2O-CO-C(CH3)3; Z is C1-C4 alkyl, phenyl or R; NR1R2 is N(CH3)2N(C2H5)2, morpholino, piperidino, azepino, pyrrolidino.
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