Copper(I)-Anilide Complex [Na(phen)(3)][Cu(NPh(2))(2)]: An Intermediate in the Copper-Catalyzed N-Arylation of N-Phenylaniline

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50856

Title:	Copper(I)-Anilide Complex [Na(phen)(3)][Cu(NPh(2))(2)]: An Intermediate in the Copper-Catalyzed N-Arylation of N-Phenylaniline
Authors:	Tseng,CK;Lee,CR;Han,CC;Shyu,SG
Contributors:	化學學系
Keywords:	COUPLING REACTIONS;ARYL HALIDES;C-N;CONTAINING HETEROCYCLES;FACILE SYNTHESIS;BOND FORMATION;LIGANDS;AMIDATION;EFFICIENT;BROMIDES
Date:	2011
Issue Date:	2012-03-27 18:11:30 (UTC+8)
Publisher:	國立中央大學
Abstract:	Complex [Na(phen)(3)][Cu(NPh(2))(2)] (2), containing a linear bis(N-phenylanilide) copper(I) anion and a distorted octahedral tris(1,10-phenanthroline) sodium counter cation, has been isolated from the catalytic C-N cross-coupling reaction with the CuI/phen/tBuONa (phen=1,10-phenanthroline) catalytic system. Complex 2 can react with 4-iodotoluene to produce 4-methyl-N,N-diphenylaniline 3a) with 70.6% yield. In addition, 2 can work as an effective catalyst for C-N coupling under the same reaction conditions, thus indicating that 2 is the intermediate of the catalytic system. Both [Cu(NPh(2))(2)](-) and [Cu(NPh(2))I](-) have been observed by in situ electron ionization mass spectrometry (ESI-MS) under catalytic reaction conditions, thus confirming that they are intermediates in the reaction. A catalytic cycle has been proposed based on these observations. The molecular structure of 2 has been determined by single-crystal X-ray diffraction analysis.
Relation:	CHEMISTRY-A EUROPEAN JOURNAL
Appears in Collections:	[Department of Chemistry] journal & Dissertation

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