申请人:Nihon Nohyaku Co., Ltd.
公开号:US04305889A1
公开(公告)日:1981-12-15
.alpha.,.alpha.,.alpha.-trifluoro-o-toluic fluoride is produced in good yield and high purity by reacting anhydrous hydrogen fluoride with 1,1,3,3-tetrachloro-1,3-dihydroisobenzofuran or a mixture of .alpha.,.alpha.,.alpha.-trichloro-o-toluic chloride therewith, the mixture being preferably produced by sufficiently photochlorinating o-toluic chloride in mild conditions.
通过将无水氟化氢与1,1,3,3-四氯-1,3-二氢异苯并呋喃或其与.alpha.,.alpha.,.alpha.-三氯-邻甲苯酰氯的混合物反应,可以高产率高纯度地制得.alpha.,.alpha.,.alpha.-三氟-邻甲苯酰氟,最好的是通过在温和条件下充分光氯化邻甲苯酰氯来制备该混合物。