已经公开了2,2'-二叠氮联苯对C 60和Sc 3 N@ I h -C 80的不同反应性。就 C 60而言,脱芳香级联反应导致形成与 7-6-5 元环系统融合的氮杂富勒烯,而 Sc 3 N@ I h -C 80则经历 CH 插入途径,其中生成咔唑衍生的[6,6]-和[5,6]-氮杂金属富勒烯以及不寻常的1,2,3,6-四氢吡咯并[3,2- c ]咔唑衍生的金属富勒烯。
Catalytic Azoarene Synthesis from Aryl Azides Enabled by a Dinuclear Ni Complex
作者:Ian G. Powers、John M. Andjaba、Xuyi Luo、Jianguo Mei、Christopher Uyeda
DOI:10.1021/jacs.8b00503
日期:2018.3.21
machines and biologically active compounds. Here, we report a catalytic nitrene dimerization reaction that provides access to structurally and electronically diverse azoarenes. The reaction utilizes arylazides as nitrene precursors and generates only gaseous N2 as a byproduct. By circumventing the use of a stoichiometric redox reagent, a broad range of organic functional groups are tolerated, and common
偶氮芳烃是有价值的发色团,已被广泛用作分子机器和生物活性化合物中的光开关元件。在这里,我们报告了一种催化氮烯二聚反应,该反应提供了结构和电子上多样化的偶氮芳烃。该反应使用芳基叠氮化物作为氮烯前体并仅产生气态 N2 作为副产物。通过避免使用化学计量氧化还原试剂,可以容忍广泛的有机官能团,并且避免了当前方法的常见副产物。发现具有 Ni-Ni 键的催化剂相对于仅包含单个 Ni 中心的催化剂具有独特的效果。描述了这种核效应的机械起源。
Method for preparing benzo[C]cinnoline and its derivatives
申请人:Agency of Industrial Science & Technology
公开号:US04075074A1
公开(公告)日:1978-02-21
Benzo[C]cinnoline or its derivative is prepared by irradiating 2,2'-diazidobiphenyl or its derivative with light in a low-temperature rigid solvent.
A one-pot synthesis of cyclic carbodiimides which involves reaction of C,C-bis(aryliminophosphoranes) connected by aliphatic bridges with Boc(2)O in the presence of DMAP is described. The method is also applicable when a heteroatom such as oxygen or nitrogen is incorporated into the tether connecting the two aromatic rings. A conformation study has been carried out on carbodiimide 23a, which posseses a central nine-membered ring, using H-1 NMR spectroscopy and semiempirical as well as molecular mechanics calculations.