Generation and Reaction of Hyperralent Hetero-atom

我们开发了新的C-C键形成方法，其中包括作为关键中间体的新型碲酸盐配合物。当乙烯基碲化物与有机锌化合物反应时，保持了乙烯基基团的几何构型，发生了Te-Zn交换反应。乙烯基锌化合物与卤代烷基化合物反应得到交叉偶联产物。在对过渡金属络合物的研究过程中，我们发现了一种新型的过渡金属络合物，它与格氏试剂联合使用，催化了烯烃和二烯的烷基化和硅基化反应。值得注意的是，在后期过渡金属催化反应中，脂肪族烷基卤化物和氯化硅的使用受到了极大的限制，它们在这些催化反应体系中得到了成功的应用。

We have developed new C-C bond formation methodology, which includes novel type of tellurium ate complexes as key intermediates. When the reaction of vinylic telluride with organic zinc compound was carried out, Te-Zn exchange reaction took place with retention of the geometry of vinyl moiety. The treatment of the vinylic zinc compounds with alkyl halide gave the cross coupling product. During the course of our study on the ate complex involving transition-metal complex, we have found the novel titanocene or zirconocene catalyzed alkylation and silylation of olefin and diene with the combined use of Grignard reagent. It should be noted that aliphatic alkyl halide and silyl chloride, whose usage are significantly limited in the late transition-metal catalyzed reaction were successfully employed in these catalytic reaction system.