Process for producing 1,1,3,3-tetrafluoro-1,3-dihydro-isobenzofuran
AssigneeNihon Nohyaku Co., Ltd.
InventorsTsumoru Kodaira, Yoshiro Kobayashi, Hitoshi Kurono
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Abstract
1,1,3,3-Tetrafluoro-1,3-dihydro-isobenzofuran is produced easily in good yield and high purity by allowing .alpha.,.alpha.,.alpha.-trichloro-o-toluic chloride to react with anhydrous hydrogen fluoride at an amount ratio of 4 moles or slight excess of the latter to 1 mole of the former. The final product may be used as an intermediate in the preparation of a fungicidal compound.
Claims2
A process for producing 1,1,3,3-tetrafluoro-1,3-dihydro-isobenzofuran, which is characterized by reacting .alpha.,.alpha.,.alpha.-trichloro-o-toluic chloride with anhydrous hydrogen fluoride at an amount ratio of 4 moles or slight excess of the latter to 1 mole of the former.
Dependencies are inferred from the claim text.