Development of novel key reagent for synthesis of multiple bond of heavier group main group elements.

作者希望描述在温和的条件下，含14族原子的三阴离子和四阴离子的反应活性的控制。当一个化学反应要选择性地在一个多官能团化合物中的一个(两个或三个)位置进行时，必须暂时封闭其他反应位置。我设计了一种新型的元素，它在原子上有几个保护基团。一些阴离子很容易控制，这取决于试剂的种类或元素上的触发基团。我们可以很容易地在元素上创建新的四个键。该策略可能适用于合成更复杂的双键体系，如含有第14族元素的乙烯基锂和1，1-二锂硫代双茂金属的类似物。

The author wishes to describe control of reactivity of tri- and tetraanions containing group 14 atom in the mild condition. When a chemical reaction is to be carried out selectively at one (two or three) site in a multifunctional compound, other reactive sites must be temporarily blocked. I design a new type of element, which has a several protective groups on the atom. A number of anion is easy to control depend on the kind of reagents or trigger groups on the element. We can easy to create new four bonds on the element. The strategy might be applicable for synthesis of more intricate doubly-bonded systems such as heaver analogues of vinyllithium and 1,1-dilithio-dimetalene containing group 14 elements.