Electronic effects on the structures and catalytic properties of (pyrazol-1-yl)phenylmethanone palladium(II) complexes

Nelana, Simphiwe M.; Kumar, K. Ajay; Guzei, Ilia A.; Mahamo, Tebello; Darkwa, James

doi:10.1016/j.jorganchem.2017.07.033

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Experimental and Theoretical Uv-visible Spectral Analyses1

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Cited by 3 publications

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“…S32, ESI †). 53,54 On the other hand, activation with the EtAlCl 2 co-catalyst in toluene medium mainly produced alkylated products (Table S4 and Fig. S33, ESI †).…”

Section: Experimental and Theoretical Uv-visible Spectral Analysesmentioning

confidence: 99%

Structural and ethylene oligomerization studies of chelating (imino)phenol Fe(ii), Co(ii) and Ni(ii) complexes: an experimental and theoretical approach

et al. 2022

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“…S32, ESI †). 53,54 On the other hand, activation with the EtAlCl 2 co-catalyst in toluene medium mainly produced alkylated products (Table S4 and Fig. S33, ESI †).…”

Section: Experimental and Theoretical Uv-visible Spectral Analysesmentioning

confidence: 99%

Structural and ethylene oligomerization studies of chelating (imino)phenol Fe(ii), Co(ii) and Ni(ii) complexes: an experimental and theoretical approach

et al. 2022

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Perspective and future prospects of tandem olefin oligomerization and Friedel–Crafts alkylation reactions catalyzed by iron, cobalt, nickel and palladium complexes

Ojwach

Darkwa

2019

Catal. Sci. Technol.

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Synthesis and Characterization of New Bases Derived from Nitrophenylpyrazoles, Coordination to Palladium and Antifungal Activity and Catalytic Activity in Mizoroki–Heck Reactions

Londoño-Salazar,

Restrepo-Acevedo,

Torres

et al. 2024

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In this study, we report the synthesis of eight Schiff bases (3–10) 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 (3–10) 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.

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Electronic effects on the structures and catalytic properties of (pyrazol-1-yl)phenylmethanone palladium(II) complexes

Cited by 3 publications

References 32 publications

Structural and ethylene oligomerization studies of chelating (imino)phenol Fe(ii), Co(ii) and Ni(ii) complexes: an experimental and theoretical approach

Structural and ethylene oligomerization studies of chelating (imino)phenol Fe(ii), Co(ii) and Ni(ii) complexes: an experimental and theoretical approach

Perspective and future prospects of tandem olefin oligomerization and Friedel–Crafts alkylation reactions catalyzed by iron, cobalt, nickel and palladium complexes

Synthesis and Characterization of New Bases Derived from Nitrophenylpyrazoles, Coordination to Palladium and Antifungal Activity and Catalytic Activity in Mizoroki–Heck Reactions

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