| 摘要 |
PURPOSE:To produce the titled compound useful as an intermediate of carbofuran insecticide, without producing by-product, in high yield, by hydrolyzing a 2-alkenyl-6-halophenol in an aqueous solution of caustic alkali in the presence of a catalyst at a temperature within a specific range. CONSTITUTION:The titled compound is produced by hydrolyzing 2-alkenyl-6- halophenol in an aqueous solution of a caustic alkali in the presence of a copper compound as a catalyst under pressure at 140-170 deg.C, preferably 150-160 deg.C. The reaction pressure is usually 4-17kg/cm<2>. The reaction is carried out continuously or batchwise using a reactor furnished with stirrer. Since the copper compound used as the catalyst is precipitated as a fine powder of metallic copper and is liable to deposit to the reactor, it is preferable to line the inner wall of the reactor with a fluorine resin such as tetrafluoroethylene-ethylene copolymer resin to prevent the deposition of the metallic copper. |
