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

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...

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Bibliographic Details
Published in:Green chemistry : an international journal and green chemistry resource : GC 2018, Vol.2 (9), p.2151-2157
Main Authors: Saavedra, Beatriz, Pérez, Juana M, Rodríguez-Álvarez, María J, García-Álvarez, Joaquín, Ramón, Diego J
Format: Article
Language:English
Subjects:
Acids
Alkynes
Catalysis
Catalysts
Catalytic activity
Derivatives
Green chemistry
Isomerization
Magnetite
Palladium
Solvents
Substrates
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Summary: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. 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.
ISSN:1463-9262
1463-9270
DOI:10.1039/c8gc00229k