Catalysis and Coordination Chemistry

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalysis in Organic and Polymer Chemistry".

Deadline for manuscript submissions: closed (30 November 2023) | Viewed by 956

Special Issue Editors


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Guest Editor
1. LCC Laboratoire de Chimie de Coordination, Toulouse, France
2. Department of Chemistry, IUT Paul Sabatier, Castres, France
Interests: coordination chemistry; green chemistry; catalysis; catalysts grafting; DFT calculations; organic solvent-free processes; polyoxometalates; biomass valorization
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Special Issue Information

Dear Colleagues,

Coordination compounds are known and were used since antiquity. One of the most known examples is the pigment called Prussian blue, while the modern theory of coordination chemistry is mainly based on the research of Alfred Werner and metal halide complexes with ammonia. Coordination complexes are essential in many biochemical processes through metalloenzymes, “natural catalysts” regulating biological processes. Today, coordination compounds play an important role in many industrial processes, as catalysts controlling reactivity.

This Special Issue focusses on molecular and supported catalysts containing coordination complexes and related processes catalyzed by them. In addition to preparation and characterization of the coordination compounds, attention will be paid to oxidation reactions (substrates being alkanes, alkenes, alcohols, sulfides, …) in which high catalyst activity, stability, and selectivity towards the desired product are pivotal parameters to be reached and understood. Thus, in addition to the catalyst activity, clarifying the reaction mechanism is strongly encouraged.

Dr. Jana Pisk
Dr. Dominique Agustin
Guest Editors

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Published Papers (1 paper)

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Research

29 pages, 4102 KiB  
Article
Synthesis and Characterization of New Bases Derived from Nitrophenylpyrazoles, Coordination to Palladium and Antifungal Activity and Catalytic Activity in Mizoroki–Heck Reactions
by Jennifer Londoño-Salazar, Andrés Restrepo-Acevedo, John Eduard Torres, Rodrigo Abonia, Laura Svetaz, Susana A. Zacchino, Ronan Le Lagadec and Fernando Cuenú-Cabezas
Catalysts 2024, 14(6), 387; https://0-doi-org.brum.beds.ac.uk/10.3390/catal14060387 - 16 Jun 2024
Viewed by 494
Abstract
In this study, we report the synthesis of eight Schiff bases (310) type N-heterocycle (N-het) using conventional refluxing conditions as well as different eco-friendly techniques such as grinding, thermal fusion, microwave irradiation (MWI) and ultrasound, all [...] Read more.
In this study, we report the synthesis of eight Schiff bases (310) type N-heterocycle (N-het) using conventional refluxing conditions as well as different eco-friendly techniques such as grinding, thermal fusion, microwave irradiation (MWI) and ultrasound, all of them in the presence of a catalytic amount of acetic acid. These procedures had the additional advantage of being environmentally friendly and high-yield, making these protocols an alternative for Schiff-base syntheses. The obtained Schiff bases were coordinated to palladium, generating new complexes of type [Pd2Cl4(N-het)2]. Complexes [Pd2Cl4(5)2] and [Pd2Cl4(9)2] showed high activity and selectivity for a model Mizoroki–Heck C-C coupling reaction of styrene with iodobenzene and bromobenzaldehydes. All compounds and complexes were evaluated for antifungal activity against clinically important fungi such as Candida albicans and Cryptococcus neoformans. Although the Schiff bases (310) showed low antifungal activity against both fungi, some of their palladium complexes such as [Pd2Cl4(3)2], [Pd2Cl4(5)2], [Pd2Cl4(8)2] and [Pd2Cl4(10)2] showed comparatively higher antifungal effects mainly against C. neoformans. The product of the Mizoroki–Heck-type C-C coupling reactions, 4-styrylbenzaldehyde, was isolated and purified to be later used in the synthesis of four new nitrophenylpyrazole derivatives of styrylimine, which also displayed antifungal activity, especially against C. neoformans. Full article
(This article belongs to the Special Issue Catalysis and Coordination Chemistry)
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