作者:Alhussein A. Ibrahim、Mutsumi Matsumoto、Yuji Miyahara、Kenji Izumi、Masahiko Suenaga、Nobujiro Shimizu、Takahiko Inazu
DOI:10.1002/jhet.5570350139
日期:1998.1
A new series of macrocyclic compounds with one or two Tröger base skeletons has been synthesized by condensing mono-, di-, tri-, and teraethyleneglycol bis(p-aminophenoxy) ethers with formalin in the presence of concentrated hydrochloric acid in ethanol at room temperature for 13 days. This simple one-step cyclization provided 19 in remarkably high yield (46%) and 17, 18, and 20 in yields reflecting
在乙醇中,在浓盐酸存在下,于室温下,通过缩合单,二,三和三乙二醇双(对氨基苯氧基)醚与福尔马林,合成了具有一个或两个Tröger碱骨架的一系列新的大环化合物。持续13天。这种简单的一步式环化反应可提供19的高产率(46%),并提供17、18和20的产率,反映了环的应变和统计因子。观察到与硫氰酸锂的络合物为20,其结构通过X射线晶体学得以阐明。