| 摘要 |
<p>The novel title cpds. of formula (I) (where Y is H, lower alkyl or halogen; R1 is H, lower alkyl, or lower alkoxy, R2 is lower alkyl, R3 is H or lower alkyl X is halogen; n is 1 or 2; and Q is where Z1 and Z2 are O or S; R4, R5 R6 and R7 are H or lower alkyl, and m is 0-2). are esp. useful as selective herbicides and may be prepd. by reacting.</p> |
