摘要
4-Hydroxymethyl-2-(2-furyl)-1,3-dioxolane and 5-hydroxy-2-(2-furyl)-1,3-dioxane consisting of mixtures of cis- and trans-isomers react with acetylene in the superbasic catalytic system KOHH-DMSO at the atmospheric or higher pressure (80-85A degrees C, 2-3 h) giving the corresponding vinyl ethers in 88-90% yield. The ratio of the structural and configurational isomers in vinyl ethers remains the same as in the initial compounds.
- 出版日期2010-9