| 摘要 |
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)mR<3> where R<3> is C1-6 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 C1-6 alkyl and intermediate compounds. |
