Heterosubstituted acetals of the formula ##STR1## can be obtained by reacting vinyl compounds of the formula CH.sub.2 .dbd.CH-A.sup.1 (II) with alkyl nitrites of the formula R.sup.1 --ONO (III.) The reaction is performed in the presence of palladium in metallic or bonded form and in alcohols or ethers as reaction medium at from 0.degree. to 120.degree. C.
                            公式为##STR1##的异取代
缩醛可以通过将化合物CH.sub.2.dbd.CH-A.sup.1 (II)与化合物R.sup.1--ONO (III)的烯丙基化合物反应而获得。该反应在0°C至120°C的温度下,在
醇类或
醚类作为反应介质的情况下,在
金属或配位形式的
钯存在下进行。