Development of Innovative Core Compounds to Serve as Fundamental Next-generation Materials Taking Full Advantage of Silicon

根据这项研究提案，实现了下述重大成果。首先建立了功能材料合成的基本方法：(1)作为各种硅氧烷材料的多用途起始化合物的环硅醇容易获得高产率；(2)取代基的研究使提供单一立体结构的产品成为可能。对于具有活性基团的创新核心化合物的合成，(1)具有8个活性取代基(章鱼)的笼形倍半硅氧烷，(2)两端带有两个活性基团的梯形硅氧烷。此外，还通过一种简便的方法得到了建议文件中没有包括的具有两个不同取代基的笼形倍半硅氧烷。综上所述，本项目获得了几种用途广泛的新的合成方法和潜在的功能硅材料。

Following the research proposal, these significant results described below were accomplished. First in the establishment of basic methods for the syntheses of functional materials: (1) Cyclic silanols those serve as the versatile starting compounds for various siloxane materials were easily accessed in high yields, (2) Investigation of substituents made it possible to afford the products with single stereo structure. For innovational core compounds synthesis with reactive groups, (1) cage octasilsesquioxanes with eight reactive substituents (octopus), (2) laddersiloxanes with two reactive groups on the both ends were synthesized. In addition, cage hexasilsesquioxanes with two different substituents, which was not included in the proposal documents, was also obtained by a facile method. In summary, several versatile new synthetic methods and potential functional silicon materials were obtained in this project.