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.
通过将无水氢氟酸与1,1,3,3-四氯-1,3-二氢异苯并呋喃或.alpha.,.alpha.,.alpha.-三氯-邻甲苯氯化物混合物反应,可以高产量且高纯度地制备.alpha.,.alpha.,.alpha.-三氟-邻甲苯氟化物,其中混合物最好是在温和条件下通过充分光氯化邻甲苯氯化物而产生的。