Synthesis and application of electron-deficient heterocyclic carbene species

本研究中，我们发现了新的化学物种“吡啶叉”的性质，并合成了一种新的吡啶叉金属配合物，以应用于催化反应。首先，我们成功地产生了游离的吡啶叉，并将其与几种试剂反应。其次，我们合成了双齿双-2-吡啶亚基钯配合物，它具有非常独特的电子和结构特征，而且它可以由市售的化合物简单地三步合成。该合成方法也可应用于其他后过渡金属，从而利用吡啶亚甲基的高稳定性和贡献能力建立新的催化剂库。

In this research, we uncovered properties of new chemical species "pyridylidene" and synthesized a new pyridylidene metal complex toward the application to catalytic reaction. First we successfully generated free pyridylidene and reacted it with several reagents. Moreover, decomposition pathway of pyridylidene was also found. Next we synthesized bidentate bis-2-pyridylidene palladium complex, which has very unique electronic and structural characters and moreover it can be synthesized only three steps from commercially available compounds easily. The synthetic method can also be applicable to other late transition metals so that establishment of new catalyst library utilizing high stability and donation ability of pyridylidene.