| 摘要 |
PCT No. PCT/EP97/00606 Sec. 371 Date Nov. 4, 1998 Sec. 102(e) Date Nov. 4, 1998 PCT Filed Feb. 10, 1997 PCT Pub. No. WO97/30026 PCT Pub. Date Aug. 21, 1997The invention relates to a process for preparing a 2-(thiosubstituted)-4-haloacetophenone such as those of formula (I), which comprises reacting a 2,4-dihaloacetophenone with a thiolating agent under substantially anhydrous conditions. In formula (I), R1 and R2 have the meanings given in the description and R3 is halogen. The compounds prepared are useful as intermediates in the preparation of herbicidally active compounds. |
