Bulky guanidinate calcium and zinc complexes as catalysts for the intramolecular hydroamination
作者:Milan Kr Barman、Ashim Baishya、Sharanappa Nembenna
DOI:10.1016/j.jorganchem.2019.02.005
日期:2019.5
to the formation of heteroleptic calcium or zinc complexes. All three compounds (1–3) were characterized by multinuclear (1H, 13C, 29Si) magnetic resonance spectroscopy, elemental analysis and single crystal X-ray diffraction methods. Solid state structures confirm that all are monomeric species. Furthermore, we have shown the catalytic application of these complexes for intramolecular hydroamination
混合胍基-酰胺基负载的钙,LCaN(SiMe 3)2 ∙2THF(1)[L = ArNC(N i Pr 2)NAr}(Ar = 2,6-Me 2 -C 6 H 3)]锌,LZnN(SiMe 3)2(2)和L 1 ZnN(SiMe 3)2(3)[L 1 = Ar'NC(N i Pr 2)NAr'}(Ar'= 2,6- i Pr 2 -C 6 H 3)]已通过盐复分解法合成。LH或L 1 H与两当量的THF中的KN(SiMe 3)2和当用CaI 2或ZnCl 2处理时所得的反应混合物之间的反应导致形成杂配钙或锌络合物。所有三种化合物(13通过多核)进行了表征(1个H,13 C,29Si)磁共振波谱,元素分析和单晶X射线衍射方法。固态结构证实所有都是单体物种。此外,我们显示了这些配合物在氨基烯烃分子内加氢胺化方面的催化应用。有趣的是,在没有任何其他活化剂(助催化剂)的情况下,化合物1表现出