Issue 1, 2015

Silver tungstate: a single-component bifunctional catalyst for carboxylation of terminal alkynes with CO2 in ambient conditions

Abstract

Silver tungstate was successfully developed as a bifunctional catalyst for the ligand-free carboxylation of various terminal alkynes with electron-withdrawing or electron-donating groups under atmospheric pressure of carbon dioxide (CO2) at room temperature. In this protocol, dual activation – i.e., the terminal alkyne activated by silver, and CO2 activation by the tungstate anion – was verified using nuclear magnetic resonance spectroscopy, and means that this reaction can be run under ambient conditions. Notably, this protocol can be applied to the preparation of a phenylacrylate derivative by a cascade reaction using phenylacetylene, CO2 and benzylamine as starting materials.

Graphical abstract: Silver tungstate: a single-component bifunctional catalyst for carboxylation of terminal alkynes with CO2 in ambient conditions

Supplementary files

Article information

Article type
Paper
Submitted
22 Aug 2014
Accepted
15 Sep 2014
First published
16 Sep 2014

Green Chem., 2015,17, 474-479

Silver tungstate: a single-component bifunctional catalyst for carboxylation of terminal alkynes with CO2 in ambient conditions

C. Guo, B. Yu, J. Xie and L. He, Green Chem., 2015, 17, 474 DOI: 10.1039/C4GC01638F

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