Preparation of Zirconium Guanidinate Complexes from the Direct Insertion of a Carbodiimine and Aminolysis Using a Guanidine. Comparison of the Reactions
作者:Shu-Jian Chen、Brenda A. Dougan、Xue-Tai Chen、Zi-Ling Xue
DOI:10.1021/om300097a
日期:2012.4.23
(3) gave exclusively [CyNC(NMe2)NCy]Zr(NMe2)2[N(SiMe3)2] (5) and [CyNC(NMe2)NCy]Zr(NMe2)2[Si(SiMe3)3] (6), respectively. The reaction between 2 and guanidine CyNHC(NMe2)═NCy (9) gave 5 and HNMe2 through the preferred cleavage of a Zr–NMe2 bond in 2. The reaction between 3 and 9 led to the preferred cleavage of the Zr–Si(SiMe3)3 bond in 3, yielding [CyNC(NMe2)NCy]Zr(NMe2)3 (7) and HSi(SiMe3)3 and, upon
直接将1当量的CyN═C═NCy(1 ; Cy =环己基)插入(Me 2 N)3 Zr [N(SiMe 3)2 ](2)和(Me 2 N)的Zr–NMe 2键中3 Zr [Si(SiMe 3)3 ](3)仅给出[CyNC(NMe 2)NCy] Zr(NMe 2)2 [N(SiMe 3)2 ](5)和[CyNC(NMe 2)NCy] Zr (NMe 2)2 [Si(SiMe 3)3 ](6)。2和胍CyNHC(NMe 2)═NCy(9)之间的反应通过在2中优先裂解Zr-NMe 2键,得到5和HNMe 2。3和9之间的反应导致Zr-Si(SiMe 3)3键在3中的优先裂解,产生[CyNC(NMe 2)NCy] Zr(NMe 2)3(7)和HSi(SiMe 3)3并且,在裂解另一种Zr–NMe 2时键,形成[CyNC(NMe 2)NCy] 2 Zr(NMe 2)2(8)。Zr(NMe 2)4(4