作者:Pablo Wessig、Kristian Möllnitz、Christiane Eiserbeck
DOI:10.1002/chem.200700108
日期:2007.6.4
A modular approach for the synthesis of molecular rods based on oligospiroketals has been developed. The strategy relies on different terminal and intermediate segments, which are joined by ketal formation between ketones and diols. For this purpose it was necessary to develop a new ketalization method to circumvent some problems related with the established methods. The terminal segments are either
已经开发了一种基于寡螺酮体的分子棒合成的模块化方法。该策略依赖于不同的末端和中间链段,它们通过在酮和二醇之间的缩酮形成而结合在一起。为此,有必要开发一种新的缩酮化方法,以避开与已建立方法有关的一些问题。末端链段衍生自4-哌啶酮或4-氧代环己烷羧酸,而中间链段位于季戊四醇和环己烷-1,4-二酮上。已经制备并表征了一系列三螺(14-18),六螺(19)和壬螺(20)化合物。从这些中我们认识到,如果连接七个以上的环,则必须使用溶解度增强基团。