The Williamson ether synthesis has been applied to the preparation of polyoxyethyleneglycol mono- and di-ethers. These were obtained by reacting the mixed potassium salts of hexaoxyethyleneglycol with alkyl or aryl halides. Hexaoxyethyleneglycol monoethers of the type R•O(CH2CH2•O)6H, (R = n-C10H21, n-C12H25, n-C14H29, and p-iso-C8•H17•C6H4•O•CH2CH2) and diethers of the type R•O(CH2•CH2•O)6•R, (R = n-C10H21
Williamson 醚合成已应用于制备聚氧
乙烯乙二醇单醚和
二醚。这些是通过将六氧
乙二醇的混合
钾盐与烷基或芳基卤化物反应而获得的。R•O( •O)6H 型六氧
乙二醇单醚(R = n-
C10H21、n-
C12H25、n-
C14H29 和 p-iso-C8•H17•
C6H4•O• )和
二醚R•O(
CH2• •O)6•R, (R = n- 、n- 和 n- ) 已制备成纯态,并确定了它们的一些性质。