Synthesis of bis(bromomethyl) dimethyl crown ethers and complexation properties of their derivatives having electron-donating sidearms
作者:Yohji Nakatsuji、Tsuneharu Mori、Mitsuo Okahara
DOI:10.1016/s0040-4039(01)81190-4
日期:1984.1
Several bis(bromomethyl) dimethyl 15-crown-5, 18-crown-6, and 21-crown-7 were prepared according to two methods without protecting reactive bromo substituents. Cis and trans isomers of la are separated and the structures are inferred by considering the complexation property of their derivatives having electron-donating sidearms toward sodium and potassium cations.
根据两种方法在不保护反应性溴取代基的情况下制备了几种双(溴甲基)二甲基15-crown-5、18-crown-6和21-crown-7。分离Ia的顺式和反式异构体,并通过考虑其具有对钠和钾阳离子的供电子侧臂的衍生物的络合性质来推断结构。