4-nitro-N-(1-phenylethylidene)benzenamin;4-nitrophenyl-(1-phenylethylidene)amine;4-nitro-N-(1-phenylethylidene)aniline;p-nitroanil of acetophenone;Acetophenon-4-nitrophenylimin;N-(4-nitrophenyl)-1-phenylethanimine
tetratriazolium salt and its subsequent metalation to generate a series of tetranuclear mesoioniccarbenegold(I) complexes is presented. The complete structural characterization of the metallic carbenes and the benefits of cooperative catalysis in the processes of hydroamination and hydrohydrazination of terminal alkynes are discussed.
characterization of a novel series of ring‐fused benzoxazine‐derived triazolium salts (1a–c) and their corresponding triazolylidene gold(I) complexes (2a–c). All new compounds were fully characterized by means of 1H and 13C NMR spectroscopy, elemental analyses, and mass spectroscopy and in the case of triazoliums 1a and 1b by single‐crystal X‐ray diffraction. The new triazolylidene gold complexes (2a–c)
我们报道了一系列新的环稠合苯并恶嗪衍生的三唑盐(1a–c)及其相应的三唑基亚金(I)配合物(2a–c)的合成和完整表征。通过1 H和13 C NMR光谱,元素分析和质谱对所有新化合物进行充分表征,对于三唑鎓1a和1b,则通过单晶X射线衍射对其进行充分表征。在苯炔衍生物和肼为氮源的末端炔烃的加氢胺化和氢肼化反应中,新的三唑基亚金络合物(2a–c)作为预催化剂进行了测试。
<i>N</i>-Heterocyclic Carbenes and Imidazole-2-thiones as Ligands for the Gold(I)-Catalysed Hydroamination of Phenylacetylene
作者:Edwin Alvarado、Anna C. Badaj、Timothy G. Larocque、Gino G. Lavoie
DOI:10.1002/chem.201201448
日期:2012.9.17
Gold(I) complexes of 1‐[1‐(2,6‐dimethylphenylimino)alkyl]‐3‐(mesityl)imidazol‐2‐ylidene (C^ImineR), 1,3‐dimesitylimidazol‐2‐ylidene (IMes) and of the corresponding thione derivatives (S^ImineR and IMesS) were prepared and structurally characterised. The solid‐state structure of the C^ImineR and S^ImineR gold(I) complexes showed monodentate coordination of the ligand and a dangling imine group that
1- [1-(1,(2,6-二甲基苯基亚氨基)烷基] -3-(间苯二甲酰)咪唑-2-亚烷基(C ^ Imine R),1,3-二甲酰咪唑-2-亚烷基(IMes)的金(I)络合物制备了相应的硫酮衍生物(S 1 ,Imine R和IMesS),并对其结构进行了表征。C ^ Imine R和S ^ Imine R gold(I)配合物的固态结构显示了配体和悬挂的亚胺基团的单齿配位,该亚胺基团可逆地结合到金属中心,从而稳定了否则不稳定的催化中间体。有趣的是,C ^ Imine t Bu与[AuCl(SMe 2)]的反应导致[(C ^ Imine t Bu)AUCL],其在结晶重新排列到异常复杂的阳离子[(C ^亚胺吨卜)2的Au] +,以AUCL 2 -为抗衡离子。测试了金配合物在苯乙炔与取代苯胺的加氢胺化反应中的活性,并将其与对照催化剂体系进行了比较。使用[(C ^ Imine t Bu)AuC
Development of highly enantioselective new Lewis basic N-formamide organocatalysts for hydrosilylation of imines with an unprecedented substrate profile
作者:Pengcheng Wu、Zhouyu Wang、Mounuo Cheng、Li Zhou、Jian Sun
DOI:10.1016/j.tet.2008.09.034
日期:2008.12
ketimines and non-methyl ketimines were catalyzed to afford the desired amines in good to high yield and enantioselectivity. In particular, catalyst 6e enabled the reduction of the difficult bulky ketimines to be highly efficient and enantioselective, affording up to 99% yield and 97% ee. This catalyst proved to prefer the relatively bulkier non-methyl acyclic ketimines to the methyl ketimines as substrate
A series of mono‐ to trinuclear gold(I) complexes (1–3) supported by oxo‐functionalized 1,2,3‐triazolylidenes have been prepared. All new compounds were fully characterized by means of 1H and 13C NMR spectroscopy, elemental analyses, and in the case of complexes 1 and 2 by x‐ray diffraction. The catalytic performance of the new triazolylidene gold complexes was tested in several hydroelementation and
制备了一系列由羰基官能化的1,2,3-三唑基亚甲基支持的单核至三核金(I)配合物(1-3)。所有新化合物均已通过1 H和13 C NMR光谱,元素分析以及对于复合物1和2的X射线衍射进行了充分表征。在使用多种炔烃作为起始原料的几种加氢元素化和环化过程中,测试了新的三唑基亚金络合物的催化性能。根据总体结果,三核配合物3在所有过程中均显示出最高的催化活性,在温和的反应条件下提供了良好或优异的收率。