Synthesis of diruthenium tetrahydrido complexes 1 with substituted cyclopentadienyls from readily available ruthenium η3-allyl complexes 3 has been attained by LiEt3BH-mediated reaction followed by conventional protonolysis. Complexes 1d and 1e having 1,2,4-tri- and 1,3-di-tert-butylated cyclopentadienyls obtained by this protocol have sufficient thermal stability in addition to the significant lability of the Ru–H bonds.
通过LiEt3BH介导的反应,随后进行常规的质子解离,成功合成了与已知的
环戊二烯基取代基相结合的二
铑四氢化合物1,这些取代基来源于易得的
铑η3-烯丙基化合物3。采用该方法合成的复合物1d和1e含有1,2,4-三和1,3-二叔丁基
环戊二烯基,不仅具有足够的热稳定性,还显示了Ru–H键的显著活泼性。