有机-无机杂化多金属氧酸盐 Na 5 H 5.68 [Na 0.17 Rh 0.83 III (C 6 H 8 N 2 ) 2 Cl 2 ] 2 (C 8 H 8 N 2 ) 2 [As 4 W 40 O 140 Rh 4 IV (C 6 H 4 N 2 S) 2 ]· n H 2 O ( 1) 制备含有 5.66 个 Rh 原子;据我们所知,它在 Rh-POM 家族中拥有最多的 Rh 原子。化合物1在温和条件下在硝基苯还原成苯胺和苯胺氧化成偶氮苯方面表现出良好的催化性能。此外,催化剂1表现出高活性、优异的稳定性和可回收性。
Facile Cu(I)-Catalyzed Oxidative Coupling of Anilines to Azo Compounds and Hydrazines with Diaziridinone under Mild Conditions
作者:Yingguang Zhu、Yian Shi
DOI:10.1021/ol4005917
日期:2013.4.19
A mild and highly efficient Cu(I)-catalyzed oxidative coupling of anilines is described. Various primary and secondary anilines can be efficiently coupled under mild conditions to the corresponding azo compounds and hydrazines in high yields. This method provides a direct and practical access to these compounds and is also amenable to gram scale with no special precautions to exclude air or moisture
With the aid of an azo directing group, Pd-catalyzed ortho-sp(2) C-H bond activation/functionalization of azoarenes with aryl acyl peroxides has been explored. This transformation provides easy access to regioselectively introducing acyloxyl and aryl groups into azoarenes by simply changing the reaction temperature and solvent.
Rhenium-Catalyzed [4 + 1] Annulation of Azobenzenes and Aldehydes via Isolable Cyclic Rhenium(I) Complexes
作者:Xiaoyu Geng、Congyang Wang
DOI:10.1021/acs.orglett.5b00938
日期:2015.5.15
The first Re-catalyzed [4 + 1] annulation of azobenzenes with aldehydes was developed to furnish 2H-indazoles via isolable and characterized cyclic ReI-complexes. For the first time, the acetate-acceleration effect is showcased in Re-catalyzed C–H activation reactions. Remarkably, mechanistic studies revealed an irreversible aldehyde-insertion step, which is in sharp contrast to those of previous Rh-
Structure and Reactivity of Half-Sandwich Rh(+3) and Ir(+3) Carbene Complexes. Catalytic Metathesis of Azobenzene Derivatives
作者:Daniel J. Tindall、Christophe Werlé、Richard Goddard、Petra Philipps、Christophe Farès、Alois Fürstner
DOI:10.1021/jacs.7b12673
日期:2018.2.7
Specifically, the donor/acceptor carbene 10a derived from ArC(═N2)COOMe and [Cp*RhCl2]2 undergoes spontaneous 1,2-migratory insertion of the emerging carbene unit into the Rh-Cl bond with formation of the C-metalated rhodium enolate 11. In contrast, the analogous complexes 10b,c derived from [Cp*RhX2]2 (X = Br, I) as well as the iridium species 13 and 14 derived from [Cp*IrCl2]2 are sufficiently stable