The Synthesis and Structural Characterisation of a Series of Hydrophobic Piperidones and Bispidones
作者:Nicholas A. Barnes、Alan T. Brooker、Stephen M. Godfrey、Phillip R. Mallender、Robin G. Pritchard、Mark Sadler
DOI:10.1002/ejoc.200700961
日期:2008.2
and extensive hydrophobic regions are observed in the extended structures of some of these molecules. A series of twelve bispidones have been synthesised from their piperidone precursors by a condensation reaction with N,N-disubstituted diamines, H2N(CH2)2NR2 (R = Me, Et, iPr). Solid-state structures have been obtained for three of these bispidones, all of which display a double-chair conformation. The
已经合成了一系列具有可变长度 [CH3(CH2)n–], n = 0, 5, 11, 17 的烷基链的二吡啶-2-基取代的哌啶酮。哌啶酮都是结晶材料,以固态存在,以烯醇互变异构体的形式存在,通过氢键稳定。尽管存在长烷基链,但氢键是这些材料结晶度的原因,并且在其中一些分子的扩展结构中观察到广泛的疏水区域。通过与 N,N-二取代二胺 H2N(CH2)2NR2 (R = Me, Et, iPr) 的缩合反应,由其哌啶酮前体合成了一系列 12 种双吡酮。已经获得了其中三种双环酮的固态结构,所有这些都显示出双椅构象。