A new mechanism for metal-catalyzed stannane dehydrocoupling based on alpha-H-elimination in a hafnium hydrostannyl complex.
A new mechanism for metal-catalyzed stannane dehydrocoupling based on alpha-H-elimination in a hafnium hydrostannyl complex.
复制标题
基于铪氢锡基配合物中α-H消除的金属催化锡烷脱氢偶联的新机制。
DOI：
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发表时间：
2002
影响因子：
15
通讯作者：
T. Tilley
中科院分区：
文献类型：
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作者：
N. Neale;T. Tilley
由CpCpHf（H）Cl与Mes（2）SnH（2）反应合成了CpCpHf（SnHMes（2））Cl（Cp = eta（5）-C（5）Me（5））。该化合物已被鉴定为金属催化的Mes（2）SnH（2）脱氢偶联为二锡烷Mes（2）HSnHMes（2）（Mes = 2，4，6-三甲基苯基）的中间体。该体系中的脱氢偶联似乎是通过从CpCpHf（SnHMes（2））Cl中消除SnMes（2）而发生的，其中Sn-Sn键的形成通过亚锡烷基插入Sn-H键进行。
The hafnium hydrostannyl complex CpCpHf(SnHMes(2))Cl (Cp = eta(5)-C(5)Me(5)) has been synthesized from the reaction of CpCpHf(H)Cl with Mes(2)SnH(2). This compound has been identified as an intermediate in the metal-catalyzed dehydrocoupling of Mes(2)SnH(2) to the distannane Mes(2)HSnSnHMes(2) (Mes = 2,4,6-trimethylphenyl). The dehydrocoupling in this system appears to occur by elimination of :SnMes(2) from CpCpHf(SnHMes(2))Cl, with Sn-Sn bond formation proceeding via insertion of the stannylene into a Sn-H bond.