The present invention relates to a method for preparing a dialkyi or dialkenyl ether of a cycloaliphatic or araliphatic diol, which comprises (i) reacting the cycloaliphatic or araliphatic diol with metallic sodium in an aprotic organic solvent in the presence of a catalytic amount of at least one monoether-monoalcohol of formula (I) wherein Y is identical or different and selected from C2-C4-alkylene, n is an integer in the range from 1 to 10, and R1 is C1-C4-Alkyl, whereby the corresponding disodium dialcoholate is obtained, reacting the disodium dialcoholate obtained in step (i) with an alkylation alkenylation reagent.
本发明涉及一种制备环脂族或脂肪族二元醇的二酮基或二烯基醚的方法,其包括 (i) 在催化量的至少一种式(I)的单醚一元醇存在下,在非沸腾有机溶剂中使环脂族或脂肪族二元醇与
金属
钠反应,式(I)中Y为相同或不同且选自C2-C4-烯烃、n 为 1-10 之间的整数,R1 为 C1-C4 烷基,将步骤(i)中得到的二醇二
钠与烷基化烯基化试剂反应,可得到相应的二醇二
钠。