| 摘要 |
<p>This invention relates to an improved process for preparing a herbicidal intermediate compound having structural formula (I), wherein groups X are independently selected from C1-6 alkyl, halo C1-6 alkyl, CN, halogen, C1-6 alkoxy, nitro, or S(O)mR3 where R3 is C¿1-6? alkyl and m is 0, 1 or 2, n is O or an integer of from 1 to 4 and R?2¿ is hydrogen or C¿1-6? alkyl and intermediate compounds.</p> |
