PROCESS FOR PRODUCING N-METHYL-(2,3-DIHYDRO-2,2 DIMETHYL-7-BENZOFURANYL)-CARBAMATE

摘要

N-methyl-(2,3-di:hydro -2,2-di:methyl-7-benzofuranyl)-carb amate is prepd. through a hitherto not known intermediate, (2,3-di:hydro-2,2-di -methyl-7-benzo-furanyl-(chloro-methyl)carbonate. The intermediate is prepd. from 2,3-di:hydro-2,2- di:methyl-7-benzo-furanol and chloro-methyl-chloro formate in an inert gas atmosphere, in an organic solvent or in an organ solvent water mixt.. An organic base and/or a quaternary ammonium and/or a phase-change catalyst. - The intermediate reacts with methylamine and/or a methylamine salt either in the original reaction mix or following isolation.