Issue 3, 2013
From the journal:

Green Chemistry

pH-Responsive N-heterocyclic carbene copper(i) complexes: syntheses and recoverable applications in the carboxylation of arylboronic esters and benzoxazole with carbon dioxide†

Wenlong Wang,ac   Guodong Zhang,ac   Rui Lang,ac   Chungu Xiaa  and  Fuwei Li*ab  

* Corresponding authors

a State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China
E-mail: fuweili@licp.cas.cn
Fax: (+86)-931-4968129

b Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou, China

c Graduate University of Chinese Academy of Sciences, Beijing, China

Abstract

A pH-controlled monophasic/biphasic switchable system has been developed as a green and novel strategy for homogeneous catalyst recycling, which has been successfully applied to the Cu-NHC-catalyzed carboxylation of organoboronic esters and benzoxazole with carbon dioxide. Additionally, the present strategy could also be extended to the Ag-NHC-catalyzed carboxylation of terminal alkyne. The tertiary amine-functionalized catalysts could be used for at least four times with a slight loss of activity.

Graphical abstract: pH-Responsive N-heterocyclic carbene copper(i) complexes: syntheses and recoverable applications in the carboxylation of arylboronic esters and benzoxazole with carbon dioxide

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Article information

DOI
https://doi.org/10.1039/C3GC36830K
Article type
Communication
Submitted
17 Nov 2012
Accepted
09 Jan 2013
First published
10 Jan 2013

Green Chem., 2013,15, 635-640

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pH-Responsive N-heterocyclic carbene copper(I) complexes: syntheses and recoverable applications in the carboxylation of arylboronic esters and benzoxazole with carbon dioxide

W. Wang, G. Zhang, R. Lang, C. Xia and F. Li, Green Chem., 2013, 15, 635 DOI: 10.1039/C3GC36830K

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