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Issue 27, 2015
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Ligand free copper(i)-catalyzed synthesis of diaryl ether with Cs2CO3via a free radical path

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Abstract

Complexes [Cu(I)(2,4-dimethylphenoxy)2] (A) and [Cu(II)(2,4-dimethylphenoxy)2(p-tolyl)] (B) were observed by in situ electrospray ionization mass spectrometry (ESI-MS) analysis of the ligand free copper(I)-catalyzed C–O coupling reaction using Cs2CO3 under the catalytic reaction conditions indicating that they could be intermediates in the reaction. The radical scavenger cumene retarded the reaction. Catalytic cycles involving a free radical path are proposed based on these observations.

Graphical abstract: Ligand free copper(i)-catalyzed synthesis of diaryl ether with Cs2CO3via a free radical path

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Supplementary files

Article information


Submitted
13 Jan 2015
Accepted
24 Mar 2015
First published
31 Mar 2015

Dalton Trans., 2015,44, 12086-12090
Article type
Communication
Author version available

Ligand free copper(I)-catalyzed synthesis of diaryl ether with Cs2CO3via a free radical path

H. Chen, M. Tseng, I. Hsu, W. Chen, C. Han and S. Shyu, Dalton Trans., 2015, 44, 12086
DOI: 10.1039/C5DT00151J

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