Generation and Reaction of Hyperralent Hetero-atom

我们开发了新的C-C键形成方法，其中包括新型碲酸盐配合物作为关键中间体。当碲化乙烯与有机锌化合物反应时，Te-Zn交换反应发生，乙烯基部分的几何形状保持不变。用烷基卤化物处理乙烯基锌化合物得到交联产物。在研究过渡金属配合物的过程中，我们发现了新的二茂钛或二茂锆在格氏试剂的联合作用下催化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使用受限的脂肪族烷基卤化物和硅酰氯被成功地应用于这些催化反应体系中。

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.