A process for the preparation of ethers of the formula R.sup.1 --CR.sup.2 .dbd.CH--O--R.sup.3, in which R.sup.1 and R.sup.3 are each a radical having 1 to 6 carbon atoms and R.sup.2 is hydrogen or a radical having 1 to 2 carbon atoms, by reaction of a diacetal of the formula R.sup.1 --CHR.sup.2 --CH(--O--R.sup.3).sub.2 in the presence of a catalyst composed of an acid and an amine at elevated temperature in the liquid phase. The unsaturated ether of the above-mentioned formula is formed from the diacetal with elimination of an alcohol R.sup.3 --OH.
一种制备式为R.sup.1-CR.sup.2.dbd.CH-O-R.sup.3的醚的方法,其中R.sup.1和R.sup.3分别是具有1至6个碳原子的基团,而R.sup.2是氢或具有1至2个碳原子的基团,通过在液相高温下,在酸和胺组成的催化剂存在下,反应式为R.sup.1-CHR.sup.2-CH(-O-R.sup.3).sub.2的二
缩醛,从二
缩醛中消除醇R.sup.3-OH形成上述式子中的不饱和醚。