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

Autor:	Bing Yu, Chun-Xiang Guo, Jia-Ning Xie, Liang-Nian He
Rok vydání:	2015
Předmět:	chemistry.chemical_classification Alkyne Nuclear magnetic resonance spectroscopy Photochemistry Pollution Bifunctional catalyst chemistry.chemical_compound Benzylamine Carboxylation Cascade reaction Phenylacetylene chemistry Tungstate Environmental Chemistry
Zdroj:	Green Chemistry. 17:474-479
ISSN:	1463-9270 1463-9262
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0f9007cc718fd08dc56afcc92449d3d7 https://doi.org/10.1039/c4gc01638f Zobrazit plný text záznamu