Impregnated palladium on magnetite as a water compatible catalyst for the cycloisomerization of alkynoic acid derivatives

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Title: Impregnated palladium on magnetite as a water compatible catalyst for the cycloisomerization of alkynoic acid derivatives
Authors: Saavedra, Beatriz | Pérez Galera, Juana María | Rodríguez-Álvarez, María J. | García-Álvarez, Joaquín | Ramón, Diego J.
Research Group/s: Nuevos Materiales y Catalizadores (MATCAT)
Center, Department or Service: Universidad de Alicante. Departamento de Química Orgánica | Universidad de Alicante. Instituto Universitario de Síntesis Orgánica
Keywords: Catalytic activity | Palladium | Cycloisomerization | Alkynoic acids derivatives | Aqueous media | Magnetite
Knowledge Area: Química Orgánica
Issue Date: 4-Apr-2018
Publisher: Royal Society of Chemistry
Citation: Green Chemistry. 2018, 20: 2151-2157. doi:10.1039/C8GC00229K
Abstract: This work describes the catalytic activity of palladium(II) species in the cycloisomerization of alkynoic acids and their derivatives in aqueous media as well as in Deep Eutectic Solvents (DESs), with one of the lowest metal catalyst loadings reported so far in the literature. Different substrates such as terminal and internal alkynes or alkynyl sulfonylimides were studied, obtaining selectivity either to the cyclic compound or the hydrolysed keto derivative. This new system avoids the use of harmful solvents and employs very efficient and recoverable heterogeneous catalysts.
Sponsor: This work was supported by the University of Alicante (UAUSTI16-10, VIGROB-173), and the Spanish Ministerio de Economía, Industria y Competitividad (CTQ2015-66624-P). B. S. thanks the Generalitat Valenciana (ACIF/2017/211) for a fellowship. M. J. R.-A and J. G.-A. are indebted to the MINECO of Spain (CTQ2016-81797-REDC and CTQ2016-75986-P) and the Gobierno del Principado de Asturias (project GRUPIN14-006) for financial support. J. G.-A. thanks the Fundación BBVA for the award of a “Beca Leonardo a Investigadores y Creadores Culturales 2017”.
ISSN: 1463-9262 (Print) | 1463-9270 (Online)
DOI: 10.1039/C8GC00229K
Language: eng
Type: info:eu-repo/semantics/article
Rights: © The Royal Society of Chemistry 2018
Peer Review: si
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INV - AMIC - Artículos de Revistas

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