METHOD FOR PRODUCING ENOL ETHERS

摘要

The invention relates to a method for producing enol ethers of formula (I), by reacting alcohols of formula (II): R<1>OH and/or acetals or ketals of formula (III), in which R<1> is an aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic rest, which can carry other substituents which do not react with acetylenes or allenes, and the rests R independently of each other represent hydrogen or aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic rests which can be joined such that they form a ring, and where m is 0 or 1, with acetylenes or allenes of formulas (IV) or (V) in the gaseous phase at elevated temperature in the presence of a heterogeneous catalyst containing zinc or cadmium together with silicon and oxygen, and by isolating the enol ethers of formula (I) by distillation.