Hybrid Catalysts from Copper Biosorbing Bacterial Strains and Their Recycling for Catalytic Application in the Asymmetric Addition Reaction of B2(pin)2 on α,β-Unsaturated Chalcones

Gandolfi, Raffaella; Facchetti, Giorgio; Cavalca, L.; Mazzini, Stefania; Colombo, Monica; Coffetti, Giulia; Borgonovo, Gigliola; Scaglioni, Leonardo; Zecchin, Sarah; Rimoldi, Isabella

doi:10.3390/catal12040433

Cited by 7 publications

(3 citation statements)

References 45 publications

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“…were observed, confirming the nature of the coordination between Serratia strains with Cu 2+ . On the contrary, the transfer hydrogenation with the cor- For the hybrid systems obtained with biosorbed Cu 2+ ion, the results of the 1,4-conjugate addition to the carbon-carbon double bond were in accordance with previously obtained using as ligand two different Serratia [33]. The new C-B bond using bis(pinacolato)diboron (B 2 (pin) 2 ), which is one of the most practical tools for this reaction, was obtained via transition metal catalysis.…”

Section: Catalytic Experimentssupporting

confidence: 88%

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Ni2+ and Cu2+ Biosorption by EPS-Producing Serratia plymuthica Strains and Potential Bio-Catalysis of the Organo–Metal Complexes

Zanetti

Zecchin

Colombo

et al. 2022

Water

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In this study, a biosorption system for nickel (Ni2+) and copper (Cu2+) removal by selected exopolymeric substance-producing bacterial strains was evaluated from the perspective of water remediation. A preliminary screening in a biofilm-based filtration system allowed the selection of two best-performing Serratia plymuthica strains for specific Ni2+ and Cu2+ removal from synthetic solutions, as well as the definition of the optimal growth conditions. Further tests were conducted in a planktonic cell system in order to evaluate: (i) the effect of contact time, (ii) the effect of initial metal concentration, and (iii) the effect of biomass dose. S. plymuthica strain SC3I(2) was able to remove 89.4% of Ni2+ from a 50 mg L−1 solution, and showed maximum biosorption capacity of 33.5 mg g−1, while S. plymuthica strain As3-5a(5) removed up to 91.5% of Cu2+ from a 200 mg L−1 solution, yielding maximum biosorption capacity of 80.5 mg g−1. Adsorption equilibria of both metals were reached within 30 min, most of the process occurring in the first 2–4 min. Only Ni2+ biosorption data were adequately described by Langmuir and Freundlich isothermal models, as Cu2+ was in part subjected to complexation on the exopolymeric substances. The capability of the exopolymeric substances to stably coordinate a transition metal as Cu2+ offers the possibility of the eco-friendly re-use of these new hybrid systems as catalysts for application in addition reaction of B2(pin)2 on α,β-unsaturated chalcones with good results. The systems formed by biomass and Ni2+ were instead evaluated in transfer hydrogenation of imines. The biosorption performances of both strains indicate that they have the potential to be exploited in bioremediation technologies and the obtained organo–metal complexes might be valorized for biocatalytic purposes.

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Section: Catalytic Experimentssupporting

confidence: 88%

“…HPLC conditions for 3-(4-chlorophenyl)-3-hydroxy-1-phenylpropan-1-one: Chiralcel AD; eluent hexane/iso-propanol = 90/10; λ = 240 nm; flow = 1.0 mL/min. Retention time for: S-isomer: 5.7 min, R-isomer: 8.5 min [33].…”

Section: General Procedures For Catalyzed Addition Of Bis(pinacolate)...mentioning

confidence: 99%

Ni2+ and Cu2+ Biosorption by EPS-Producing Serratia plymuthica Strains and Potential Bio-Catalysis of the Organo–Metal Complexes

Zanetti

Zecchin

Colombo

et al. 2022

Water

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“…For example, microbial biomass and EPS can be recovered after metal biosorption and used as biocatalysts for many organic transformations. In this context, Gandolfi et al (2022) successfully valorized the use of two EPS-producing bacterial strains, using their biomass after Cu biosorption as hybrid catalysts in the asymmetric boron addition on α,β-unsaturated chalcones for the synthesis of valuable pharmaceutical intermediates.…”

Section: Phyconanotechnology: Synthesis and Applicationmentioning

confidence: 99%

Cyanoremediation and phyconanotechnology: cyanobacteria for metal biosorption toward a circular economy

Ciani

Adessi

2023

Front. Microbiol.

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Cyanobacteria are widespread phototrophic microorganisms that represent a promising biotechnological tool to satisfy current sustainability and circularity requirements. They are potential bio-factories of a wide range of compounds that can be exploited in several fields including bioremediation and nanotechnology sectors. This article aims to illustrate the most recent trends in the use of cyanobacteria for the bioremoval (i.e., cyanoremediation) of heavy metals and metal recovery and reuse. Heavy metal biosorption by cyanobacteria can be combined with the consecutive valorization of the obtained metal-organic materials to get added-value compounds, including metal nanoparticles, opening the field of phyconanotechnology. It is thus possible that the use of combined approaches could increase the environmental and economic feasibility of cyanobacteria-based processes, promoting the transition toward a circular economy.

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Transition Metal‐Catalyzed Transformations of Chalcones

Santos,

Silva

2024

The Chemical Record

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Chalcones are a class of naturally occurring flavonoid compounds associated to a variety of biological and pharmacological properties. Several reviews have been published describing the synthesis and biological properties of a vast array of analogues. However, overviews on the reactivity of chalcones has only been explored in a few accounts. To fill this gap, a systematic survey on the most recent developments in the transition metal‐catalyzed transformation of chalcones was performed. The chemistry of copper, palladium, zinc, iron, manganese, nickel, ruthenium, cobalt, rhodium, iridium, silver, indium, gold, titanium, platinum, among others, as versatile catalysts will be highlighted, covering the literature from year 2000 to 2023, in more than 380 publications.

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Hybrid Catalysts from Copper Biosorbing Bacterial Strains and Their Recycling for Catalytic Application in the Asymmetric Addition Reaction of B2(pin)2 on α,β-Unsaturated Chalcones

Cited by 7 publications

References 45 publications

Ni2+ and Cu2+ Biosorption by EPS-Producing Serratia plymuthica Strains and Potential Bio-Catalysis of the Organo–Metal Complexes

Ni2+ and Cu2+ Biosorption by EPS-Producing Serratia plymuthica Strains and Potential Bio-Catalysis of the Organo–Metal Complexes

Cyanoremediation and phyconanotechnology: cyanobacteria for metal biosorption toward a circular economy

Transition Metal‐Catalyzed Transformations of Chalcones

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