- Aerobic oxidative homocoupling of aryl amines using heterogeneous rhodium catalysts
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The first heterogeneous catalyzed oxidative coupling of aryl amines is reported. Aryl amines were dimerized at room temperature under air using a heterogeneous Rh/C catalyst in the presence of acids. By choosing a suitable acidic solvent, biaryl compounds and carbazoles were selectively prepared in good yields. This reaction is operationally simple and provides an effi cient synthetic methodology for the preparation of biaryl diamines via oxidative C - H activation.
- Matsumoto, Kenji,Dougomori, Kento,Tachikawa, Shohei,Ishii, Takanori,Shindo, Mitsuru
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supporting information
p. 4754 - 4757
(2015/04/22)
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- Iron(III)-promoted oxidative coupling of naphthylamines: Synthetic and mechanistic investigations
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A facile route to the synthesis of 1,1′-binaphthyl-4,4′- diamines (naphthidines) and 1,1′-binaphthyl-2,2′-diamines (BINAMs) was developed by the oxidative homocoupling of 1- and 2-naphthylamines, respectively, using FeCl3 as oxidant and K2CO3 as base in 1,2-dichloroethane under ambient conditions. A preliminary mechanistic investigation was performed by the ESR spectroscopy and intermediate-trapping technique.
- Li, Xin-Le,Huang, Jin-Hua,Yang, Lian-Ming
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supporting information; experimental part
p. 4950 - 4953
(2011/11/29)
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- OXIDATIVE DIMERISATION OF ARYLAMIDO COMPLEXES OF PLATINUM: X-RAY STRUCTURE OF PF6
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The phenyl groups of two molecules of the phenylamido complex are oxidatively coupled, in the para position, by AgPF6 to give the dicationic complex 2 which can be deprotonated to the paramagnetic monocationic complex PF6.This has been examined by X-ray crystallography (orthorombic, space group Pnnm, R = 0.024 for 2 854 diffractometer measured observed reflections).The structure shows a bridging benzidine group which is strictly planar with marked quinonoid character within the arene rings .The mononuclear p-tolyl complex undergoes a similar coupling in the ortho position, but the 1-naphthyl complex gives a neutral coupled complex beacause of the much reduced conjugation in the twisted 1,1'-binaphtyl system.
- O'Sullivan, Richard D.,Parkins, Adrian W.,Alcock, Nathaniel W.
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p. 571 - 576
(2007/10/02)
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