| 摘要 |
<p>Provided are: a process for preparing 5-trifluoromethyl-4-nitro-2-isoxazoline compounds by a direct trifluoromethylation method; and the compounds. 5-Trifluoromethyl-4-nitro-2-isoxazoline compounds represented by general formula (1) are prepared by reacting a 4-nitro-2-isoxazole compound with (trifluoromethyl)trimethylsilane, preferably in a solvent in the presence of both a phase transfer catalyst and a base, followed by acid treatment if necessary. In general formula (1), R1 and R2 are each independently alkyl, alkenyl, alkynyl or aryl, each being optionally substituted.</p> |
