Catalytic multi-step continuous-flow processes for scalable transformation of eugenol into potential fragrances

Catalysis Today, Год журнала: 2023, Номер 418, С. 114055 - 114055

Опубликована: Фев. 22, 2023

Язык: Английский

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3D printed PLA enzyme microreactors: Characterization and application for the modification of bioactive compounds

Journal of Biotechnology, Год журнала: 2022, Номер 350, С. 75 - 85

Опубликована: Апрель 14, 2022

Язык: Английский

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Rapid plugged flow synthesis of nucleoside analogues via Suzuki-Miyaura coupling and heck Alkenylation of 5-Iodo-2’-deoxyuridine (or cytidine)

Journal of Flow Chemistry, Год журнала: 2023, Номер 13(3), С. 293 - 310

Опубликована: Март 16, 2023

Язык: Английский

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Transferring hydroformylation reaction into high-pressure gas–liquid microfluidic systems: Key achievements and perspectives

Journal of Industrial and Engineering Chemistry, Год журнала: 2024, Номер 136, С. 46 - 72

Опубликована: Фев. 23, 2024

Язык: Английский

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Coriandrum Sativum-Derived Catalysts for Eco-Friendly Knoevenagel Condensation: Experimental Investigation and Central Composite Design

Chemistry Africa, Год журнала: 2024, Номер 7(7), С. 3633 - 3645

Опубликована: Июнь 18, 2024

Язык: Английский

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Photo-Activated Carbon Dots as Catalysts in Knoevenagel Condensation: An Advance in the Synthetic Field

Photochem, Год журнала: 2024, Номер 4(3), С. 361 - 376

Опубликована: Авг. 27, 2024

Photoinduced chemical reactions and the development of new materials represent a current significant topic. We present sustainable eco-friendly approach to Knoevenagel condensation reaction involving carbonyl active methylene compounds. Our method utilizes photo-activated carbon dots (CDs) derived from 5-hydroxymethylfurfural (5HMF) within an aqueous medium does not require acidic, basic, or thermal conditions. This protocol operates effectively with aromatic, aliphatic, heteroaromatic aldehydes ketones. The 5HMF-derived-CDs can be reused four times without loss activity. Moreover, this methodology is suitable for scaling up reactions, thereby highlighting its potential industrial applications.

Язык: Английский

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The scale-up of microwave flow syntheses by recirculation; The chlorine-free preparation of alkyl phenyl-H-phosphinates

Reaction Chemistry & Engineering, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 14, 2024

The MW flow esterification of phenyl- H -phosphinic acids with alcohols at ca. 150 °C in the presence 5% [bmim][PF 6 ] afforded target alkyl -phosphinates productivity 6–9 g h −1 by applying a recirculating mode operation.

Язык: Английский

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Using High-Power UV-LED to Accelerate a Decatungstate-Anion-Catalyzed Reaction: A Model Study for the Quick Oxidation of Benzyl Alcohol to Benzoic Acid Using Molecular Oxygen

Micromachines, Год журнала: 2021, Номер 12(11), С. 1307 - 1307

Опубликована: Окт. 25, 2021

High-power UV-LED irradiation (365 nm) effectively accelerated the decatungstate-anion-catalyzed oxidation of benzyl alcohol 1 to benzoic acid 3 via benzaldehyde 2. As power light increased, both selectivity and yield also increased. The reaction was finished within h give in a 93% using 2 mol% decatungstate anion catalyst. combination flow photoreactor high-power an interval only few minutes.

Язык: Английский

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Expanding the Toolbox of Heterogeneous Asymmetric Organocatalysts: Bifunctional Cyclopropenimine Superbases for Enantioselective Catalysis in Batch and Continuous Flow

Advanced Synthesis & Catalysis, Год журнала: 2021, Номер 363(24), С. 5473 - 5485

Опубликована: Сен. 16, 2021

Abstract A strategy for the immobilization of chiral 2,3‐bisaminocyclopropenium salt (pre‐catalyst) onto polystyrene and silica supports is presented together with a suitable procedure conversion into corresponding cyclopropenimine superbase catalysts. The activity recyclability polystyrene‐ silica‐supported cyclopropenimines were initially tested under batch conditions in model Michael addition detecting comparable efficiencies but superior stability latter heterogeneous catalyst (5 cycles, accumulated TON 27.1). preferred behaved very similarly to soluble counterpart reaction glycine imine different acceptors (48–92% yield; 60–98% ee ) it could be utilized as packing material fabrication fixed‐bed mesoreactors (pressure‐resistant stainless‐steel columns). Continuous‐flow experiments performed satisfactory long‐term (24 h on stream) unaltered efficiency enantioselectivity. magnified image

Язык: Английский

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Continuous Formation of Limonene Carbonates in Supercritical Carbon Dioxide

Organic Process Research & Development, Год журнала: 2022, Номер 26(10), С. 2799 - 2810

Опубликована: Сен. 16, 2022

We present a continuous flow method for the conversion of bioderived limonene oxide and dioxide to carbonates using carbon in its supercritical state as reagent sole solvent. Various ammonium- imidazolium-based ionic liquids were initially investigated batch mode. For applying best-performing selective catalyst tetrabutylammonium chloride flow, liquid was physisorbed on mesoporous silica. In addition analysis surface area pore size distribution supported phase (SILP) catalysts via nitrogen physisorption, SILPs characterized by diffuse reflectance infrared Fourier transform spectroscopy thermogravimetric served heterogeneous flow. Initially, optimized short-term experiments resulting desired constant product outputs. Under these conditions, long-term behavior SILP system studied period 48 h; no leaching from supporting material observed case resulted yield 16%. dioxide, just traces leached detected after reducing loading 30 15 wt %, thus enabling output 17% over time.

Язык: Английский

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