Abstract
The activity of well-known alkaline-containing catalyst systems for the formation of vinyl ethers from alcohols and acetylenes can be remarkably increased by using a superbasic system: KOR-crown ether in an aprotic solvent (especially in hydrocarbons). To achieve a high catalytic activity a low concentration of alcohol in the hydrocarbon phase is essential. The results are discussed in terms of solvatation of alcoholate anion.
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