Our new synthesis of octakis(3-chloropropyl)octasilsesquioxane (1) is based on a two-stage hydrolytic condensation of 3-chloropropyltrimethoxysilane. This enables the selective formation of the desired product more rapidly (4 days), in comparison to methods used to date (5 weeks), while the yield (35%) is comparable. The process is conducted in methanolic solution, with the first stage being acid hydrolysis and the second stage condensation in the presence of di-n-butyltin dilaurate as a catalyst.

中文翻译：

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八（3-氯丙基）辛基倍半硅氧烷的新型有效合成方法及结构表征

我们新合成的辛基（3-氯丙基）辛基倍半硅氧烷（1）基于3-氯丙基三甲氧基硅烷的两步水解缩合反应。与迄今使用的方法（5周）相比，这可以更快地（4天）选择性地形成所需产品，而产率（35％）是可比的。该方法在甲醇溶液中进行，第一步是酸水解，第二步是在二月桂酸二正丁锡作为催化剂的存在下进行缩合。