PRODUCTION OF 2,3-DIHYDRO-2,2-DIMETHYL-7- HYDROXYBENZOFURAN

摘要

PURPOSE:To produce the titled compound useful as a raw material of a carbofuran-type insecticide, in high yield, without causing the corrosion of the apparatus, by carrying out the rearrangement and cyclization of o-methallyloxyphenol in a liquid heterogeneous system in the presence of a catalyst comprising the oxide of a group II metal or chromium. CONSTITUTION:The objective compound can be produced by heating o-methallyloxyphenol at 120-250 deg.C, preferably 140-200 deg.C under atmospheric pressure in liquid phase without using a solvent in the presence of a catalyst comprising the oxide of a metal of the group II of the periodic table or a chromium oxide.