乙烯基和氯甲基取代的单 T 和双层笼型倍半硅氧烷作为特定核的低代树枝状系统。

Vinyl- and chloromethyl-substituted mono-T and double-decker silsesquioxanes as specific cores to low generation dendritic systems.

机构信息

Faculty of Chemistry, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 8, 61-614 Poznan, Poland.

Centre for Advanced Technologies, Adam Mickiewicz University in Poznan, Uniwersytetu Poznańskiego 10, 61-614 Poznan, Poland.

出版信息

Dalton Trans. 2022 Jan 17;51(3):1144-1149. doi: 10.1039/d1dt04012j.

DOI:10.1039/d1dt04012j

PMID:34939635

Abstract

We report the series of G1 and G1.5 dendritic systems with mono-T SQs and DDSQ as specific types of dendron and dendrimer cores, respectively. The trivinyl- and tri(chloromethyl)-derivatives were obtained hydrolytic condensation followed by the hydrosilylation reaction, optimized to yield selectively β-products. Their structures were confirmed by spectroscopic and XRD analyses. It is the first example of double-decker SQs used as cores for the construction of a low generation of dendrimer featuring specific dumbbell frameworks expanding in two or four directions.

摘要

我们报道了一系列 G1 和 G1.5 树枝状系统，其中单-T SQs 和 DDSQ 分别为树枝状和树枝状聚合物核的特定类型。三乙烯基和三（氯甲基）衍生物通过水解缩合获得，然后进行硅氢加成反应，优化以选择性地生成β产物。它们的结构通过光谱和 XRD 分析得到证实。这是首次将双层 SQs 用作构建具有特定哑铃框架的低代树枝状聚合物的核心，该框架在两个或四个方向上扩展。