Themed collection International Symposium on Green Chemistry 2022
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Physico-chemical challenges on the self-assembly of natural and bio-based ingredients on hair surfaces: towards sustainable haircare formulations
Polymers and surfactants are used in many technological and industrial applications such as the manufacture of functional materials and coatings, personal care and pharmaceutical products, food science, paints or tertiary oil recover.
Green Chem., 2023,25, 7863-7882
https://doi.org/10.1039/D3GC02763E
Basic comprehension and recent trends in photoelectrocatalytic systems
This review reports the state-of-the-art photoelectrocatalytic setups, materials, the current applicational state, and the main bottlenecks.
Green Chem., 2024,26, 1682-1708
https://doi.org/10.1039/D3GC03371F
Decarboxylative arylation with diaryliodonium(III) salts: alternative approach for catalyst-free difluoroenolate coupling to aryldifluoromethyl ketones
α-Aryl-α,α-difluoroketones were synthesized via decarboxylative arylation using diaryliodonium salts under catalyst-free conditions without organometallic intermediates. The products can be transformed into various difluorinated functional groups.
Green Chem., 2023,25, 1790-1796
https://doi.org/10.1039/D2GC04445E
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Supercritical carbon dioxide as reaction medium for selective hydrogenation of fluorinated arenes
The selective hydrogenation of fluorinated arenes with polar functionalities to valuable fluorinated cyclohexanes is achieved using supercritical CO2 as solvent in combination with Rh NPs immobilized on molecularly modified silica as catalysts.
Green Chem., 2022,24, 8671-8676
https://doi.org/10.1039/D2GC02623F
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Sustainability and efficiency assessment of vanillin allylation: in solution versus ball-milling
Allylation of phenols, a widely used reaction in multistep synthetic pathways, was herein investigated using mechanochemistry and compared to more conventional synthesis in solution.
Green Chem., 2022,24, 7874-7882
https://doi.org/10.1039/D2GC02185D
Zirconium-catalysed hydrosilylation of esters and depolymerisation of polyester plastic waste
A general and practical procedure for the catalytic reduction of esters has been developed using the classical Schwartz's reagent (Cp2Zr(H)Cl) as a catalyst.
Green Chem., 2022,24, 6810-6815
https://doi.org/10.1039/D2GC02186B
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Dyes as efficient and reusable organocatalysts for the synthesis of cyclic carbonates from epoxides and CO2
The functionalised RhB-EtOH-I dye was identified as an efficient and reusable organocatalyst for the conversion of CO2 and epoxides into cyclic carbonates under mild conditions.
Green Chem., 2023,25, 9744-9759
https://doi.org/10.1039/D3GC02161K
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Novel elastic rubbers from CO2-based polycarbonates
We report the synthesis of novel elastic rubbers based on polycarbonates prepared by the terpolymerisation of CO2 with a long-alkyl-chain epoxide and an unsaturated epoxide.
Green Chem., 2023,25, 7612-7626
https://doi.org/10.1039/D3GC02374E
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Maleic anhydride from bio-based 1-butanol and furfural: a life cycle assessment at the pilot scale
The necessity to feed the chemical industry with bio-based platform chemicals encourages the usage of a life cycle perspective in order to evaluate potentialities and drawbacks, before launching them at the industrial scale.
Green Chem., 2023,25, 5922-5935
https://doi.org/10.1039/D2GC03707F
A direct pathway for the coupling of arenes and alkylamines via a heterogeneous zeolite-based photocatalyst
A heterogeneous zeolite-based photocatalyst can be used for the sustainable production of N,N-dialkylamines, which have applications in pharmaceuticals, agrochemicals and organic materials.
Green Chem., 2023,25, 5113-5122
https://doi.org/10.1039/D3GC01225E
Potential of catalytic oxidation of kraft black liquor for the production of biosourced compounds
Industrial kraft black liquor from maritime pine was oxidised in aqueous, alkaline medium, under air, at 150 °C, with or without a CuO/TiO2 catalyst.
Green Chem., 2023,25, 4793-4807
https://doi.org/10.1039/D3GC00388D
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Molybdate ionic liquids as halide-free catalysts for CO2 fixation into epoxides
Molybdate ionic liquids active for CO2 fixation into terminal and internal epoxides without any added halide co-catalysts are described. 95Mo-NMR spectra demonstrate the interaction and activation of CO2 with MoO4 species.
Green Chem., 2023,25, 4849-4860
https://doi.org/10.1039/D2GC04475G
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Chemical upcycling of poly(bisphenol A carbonate) to vinylene carbonates through organocatalysis
The chemical upcycling of poly(bisphenol A carbonate) was carried out through organocatalysis using α-hydroxyketones as nucleophiles, leading to valuable vinylene carbonates.
Green Chem., 2023,25, 4282-4291
https://doi.org/10.1039/D2GC04413G
Efficient two-step production of biobased plasticizers: dehydration-hydrogenation of citric acid followed by Fischer esterification
We report the production of biobased plasticizers for PVC starting from citric by a two-step process comprising dehydration-hydrogenation followed by a Fischer esterification.
Green Chem., 2023,25, 3896-3908
https://doi.org/10.1039/D2GC04678D
New mechanistic insights into the role of water in the dehydration of ethanol into ethylene over ZSM-5 catalysts at low temperature
We highlight the role of OH-treated weakly acidic ZSM-5 in the ethanol-to-ethylene at low temperature. Ethylene forms via (i) primary dimer from ethanol on Brønsted sites, followed by diethyl ether cracking on Lewis sites, and (ii) secondary cleavage of C–OH in ethanol over Brønsted sites.
Green Chem., 2023,25, 3644-3659
https://doi.org/10.1039/D2GC04437D
Extending the π-conjugation system of covalent organic frameworks for more efficient photocatalytic H2O2 production
Three highly crystalline and porous COFs with promising photoredox properties have been prepared. Via a post-sulfurization process, the imine-linked COFs were converted into thiazole-linked COFs, generating a highly conjugated and ultrastable photocatalyst for H2O2 production.
Green Chem., 2023,25, 3069-3076
https://doi.org/10.1039/D2GC04459E
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Influence of stabilisers on the catalytic activity of supported Au colloidal nanoparticles for the liquid phase oxidation of glucose to glucaric acid: understanding the catalyst performance from NMR relaxation and computational studies
Impact of stabilisers on the catalytic performance of supported Au colloidal nanoparticles for the liquid phase oxidation of glucose to glucaric acid.
Green Chem., 2023,25, 2640-2652
https://doi.org/10.1039/D2GC04418H
Accessing secondary amine containing fine chemicals and polymers with an earth-abundant hydroaminoalkylation catalyst
Titanium-catalyzed hydroaminoalkylation has emerged as an atom-economical, earth-abundant synthesis of N-containing products.
Green Chem., 2023,25, 2629-2639
https://doi.org/10.1039/D3GC00011G
Acid hydrolysis of chitin in calcium chloride solutions
This work describes a mild aging-hydrolysis integrated approach to selectively produce N-acetyl-D-glucosamine from chitin in cheap and abundant CaCl2-based molten salt hydrate solvents.
Green Chem., 2023,25, 2596-2607
https://doi.org/10.1039/D2GC04246K
Synthesis of methanol by hydrogenolysis of biobased methyl formate using highly stable and active Cu-spinel catalysts in slurry and gas phase reactions
A new two-stage production route for methanol from biomass is proposed, including hydrogenolysis of methyl formate to methanol. The Cu0.9Al2O4 spinel catalyst is shown to be highly active for this reaction and stable against corrosion by formic acid.
Green Chem., 2023,25, 2338-2348
https://doi.org/10.1039/D2GC04420J
High performance, recyclable and sustainable by design natural polyphenol-based epoxy polyester thermosets
Development of high-performance materials with a high content of aromatic units and high functionality, using natural and renewable polyphenolic synthons such as naringenin and phloroglucinol.
Green Chem., 2023,25, 2327-2337
https://doi.org/10.1039/D2GC04414E
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Combining eutectic solvents and pressurized liquid extraction coupled in-line with solid-phase extraction to recover, purify and stabilize anthocyanins from Brazilian berry waste
A PLE-SPE extraction process for the anthocyanins from Jabuticaba wastes was developed using an eutectic mixture, this acting simultaneously as solvent and stabilizing agent.
Green Chem., 2023,25, 1884-1897
https://doi.org/10.1039/D2GC04347E
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Valorisation of red beet waste: one-step extraction and separation of betalains and chlorophylls using thermoreversible aqueous biphasic systems
An integrated extraction–separation process: extraction and selective separation of chlorophylls and betalains using thermoreversible aqueous biphasic systems.
Green Chem., 2023,25, 1852-1864
https://doi.org/10.1039/D2GC04480C
Depolymerisation–hydrogenation of condensed tannins as a strategy for generating flavan-3-ol monomers
A one-pot depolymerisation–hydrogenation xataltic process enables flavan-3-ol monomer production from condensed tannins.
Green Chem., 2023,25, 1865-1874
https://doi.org/10.1039/D2GC04470F
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Optimisation of the electrochemical conversion of CO2 into formate in a flow cell configuration using a bismuth-based electrocatalyst
In the context of the electrochemical conversion of CO2 into valuable products, it is of crucial importance to optimise the electrochemical cell parameters towards industrially-relevant activity, selectivity and stability of the electrocatalyst.
Green Chem., 2023,25, 1875-1883
https://doi.org/10.1039/D2GC04482J
Catalytic hydroesterification of lignin: a versatile and efficient entry into fully biobased tunable materials
Hydroxyl groups of several industrial grade lignins are esterified by palladium-catalyzed hydroesterification reactions with CO and olefins, fatty esters or 1,3-butadiene.
Green Chem., 2023,25, 1842-1851
https://doi.org/10.1039/D2GC03708D
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Highly stable amorphous silica-alumina catalysts for continuous bio-derived mesitylene production under solvent-free conditions
Amorphous silica-alumina are efficient and highly stable catalysts for the continuous production of biomass-derived aromatics such as mesitylene from acetone, thus adding to the potential for value creation in biorefineries.
Green Chem., 2023,25, 1588-1596
https://doi.org/10.1039/D2GC04116B
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Light-driven Pickering interfacial catalysis for the oxidation of alkenes at near-room temperature
The synergistic effect of plasmonic Au and catalytic [C12]3[PW12O40] NPs in a PIC system for light-driven alkene oxidation at Troom.
Green Chem., 2023,25, 1417-1423
https://doi.org/10.1039/D2GC04591E
Cu-Catalysed sustainable synthesis of formamide with glycerol derivatives as a carbonyl source via a radical-relay mechanism
N-Formylation of amines to formamides was achieved at a low temperature by total utilization of the carbon atoms of glycerol derivatives as the C1 feedstock over CuZr/5A via a ˙OH–˙OOH radical mechanism.
Green Chem., 2023,25, 1464-1472
https://doi.org/10.1039/D2GC03993A
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Valorization of chicken feathers using aqueous solutions of ionic liquids
The poultry-processing industry generates large quantities of waste rich in keratin, a fibrous protein representing around 90 wt% of chicken feathers, which is currently disposed of by landfilling or incineration.
Green Chem., 2023,25, 1424-1434
https://doi.org/10.1039/D2GC04477C
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Unravelling and overcoming the challenges in the electrocatalytic reduction of fructose to sorbitol
In this work, we present a comprehensive study and optimisation of the electrocatalytic reduction of fructose to sorbitol and mannitol over a Cu-wire cathode, which allowed enhancing the Faradaic efficiency and achieving unprecedented product yields.
Green Chem., 2023,25, 1658-1671
https://doi.org/10.1039/D2GC04451J
Tandem electrocatalytic aziridination – ring expansion of simple aromatic olefins using ammonia and carbon dioxide
The telescoped electrochemical coupling of NH3 and CO2 with simple aromatic olefins is described, forming valuable N-heterocycles in an atom-efficient manner with overall yields of up to 91%. The same iodide catalyst is required for both steps.
Green Chem., 2023,25, 978-985
https://doi.org/10.1039/D2GC03879J
Highly selective cross ketonization of renewable acids over magnesium oxide
The rising demand for linear alkylbenzene surfactants (LAS) poses an environmental threat as LAS are industrially produced from petroleum using corrosive acid catalysts.
Green Chem., 2023,25, 614-626
https://doi.org/10.1039/D2GC04400E
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Acrylated soybean oil: a key intermediate for more sustainable elastomeric materials from silicones
The myriad benefits of silicone polymers can be made more sustainable by replacing much of the elastomer body with acrylated soybean oil. The crosslinked copolymers are simply made without catalysts using an aza-Michael reaction.
Green Chem., 2023,25, 280-287
https://doi.org/10.1039/D2GC04073E
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Pd-functionalized polydopamine-coated polyurethane foam: a readily prepared and highly reusable structured catalyst for selective alkyne semi-hydrogenation and Suzuki coupling under air
Easy low-energy-cost preparation of a highly efficient and reusable single-atom-type structured catalyst for alkyne-to-alkene hydrogenation and Suzuki coupling.
Green Chem., 2023,25, 264-279
https://doi.org/10.1039/D2GC03283J
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High yield production of 1,4-cyclohexanediol and 1,4-cyclohexanediamine from high molecular-weight lignin oil
we present a highly efficient catalytic strategies which are capable of converting DMBQ obtainable from high molecular-weight lignin-oil into industrially highly relevant and well-defined 1,4-cyclohexanediol and 1,4-cyclohexanediamine.
Green Chem., 2023,25, 211-220
https://doi.org/10.1039/D2GC03777G
Olefin epoxidation using electricity as renewable power in a bromide-mediated electrochemical process
Epoxy motifs are versatile building blocks for use in pharmaceuticals, food additives and agrochemicals. Here, we present a highly efficient electrochemical bromide-mediated olefin epoxidation process using H2O for a broad scope of substrates.
Green Chem., 2022,24, 9565-9569
https://doi.org/10.1039/D2GC02883B
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Antioxidant silicone oils from natural antioxidants
Natural antioxidants, such as vitamin E and eugenol, once grafted to silicone oils maintain their antioxidant activity and dilute the quantity of silicone needed for a given application.
Green Chem., 2022,24, 8751-8759
https://doi.org/10.1039/D2GC03112D
A sustainable way of recycling polyamides: dissolution and ammonolysis of polyamides to diamines and diamides using ammonia and biosourced glycerol
Graphical representation of Lewis acid catalyzed ammonolysis of polyamide 66.
Green Chem., 2022,24, 6923-6930
https://doi.org/10.1039/D2GC02233H
About this collection
This collection comprises articles based on presentations from the International Symposium on Green Chemistry 2022 meeting held in La Rochelle, France between 16th-20th May 2022.
Guest Edited by: François Jérôme (Université de Poitiers)