| abstract |
A method for producing unsaturated cyclic ethers of general formula (I) wherein Z represents (CHR<4>)q- or (CHR<4>)q-0-, q 0, 1, 2 or 3 and R<1>, R<2>, R<3>, R<4> represent hydrogen or C1- C4-alkyl, by reacting dioles of general formula (II), wherein Z, R<1>, R<2> and R<3> have the above-mentioned meanings, in a liquid phase at temperatures of 150 -300 DEG C in the presence of a support catalyst which is not activated prior to use by reduction and which contains cobalt and is doped with sulphur, containing cobalt, and an earth metal which is deposited by sol impregnation and is selected from the group containing platinum, palladium, rhodium, iridium, ruthenium, osmium, rhenium or mixtures thereof, on an inert support, characterized in that water is added. |