Themed collection Sustainable synthesis

Recent advances for the synthesis of pyrroles by employing organocatalysis are summarized in this review article.

The Sonogashira reaction is a cross-coupling reaction of a vinyl or aryl halide with a terminal alkyne to form a C–C bond.

Microwave assisted synthesis of N-heterocycles with short reaction time, high yields and high product purities along with a decrease in the rate of by-product formation.

The conversion of CO₂ into value-added organic compounds has received more attention over recent years since this gas is one of the major greenhouse gases, as well as an abundant, inexpensive, nontoxic, nonflammable and renewable one-carbon (C1) resource.

This review focuses on the recent development of TiO₂ as a catalyst in green organic synthesis including in hydrodeoxygenation, hydrogenation, esterification/transesterification, the water–gas shift reaction, and visible light-induced organic transformation.

Ethers have been synthesized by different protocols, this review aims to bring the attention of scientists working in the field of industrial chemistry, green chemistry, and catalysis towards the potential future of ether synthesis in micellar media.

Recent advancement in reduction methods of nitroarenes are reviewed. The different methods are classified based on the source of hydrogen utilized during reduction and the mechanism involved in the reduction process.

This review highlights the recent advances using deep eutectic solvents (DESs), deep eutectic ionic liquids (DEILs), low-melting mixtures (LMMs) or low transition temperature mixtures (LTTMs) as green media as well as catalysts in organic reactions.

The horseradish peroxidase (HRP) potential in organic synthesis.

Key aspects for the development of a greener synthesis and the use of the organoselenium compounds.

Molecular iodine has broad transformation ability of functional groups and can be used widely in MCRs.

Mechanochemical polymerization displays a sustainable alternative to classical solvent-based approaches while also offering faster kinetics and an increased conversion.

We synthesized material with different loading of vanadia on fluorapatite (V₂O₅/FAp), and excellent activity was showed for the synthesis of pyrimidine derivatives (90–97%) in ethanol medium for short reaction time.

This novel methodology provided a greener alternative to generate 3-substituted-benzo[b]furans mediate by Selectfluor® reagent. The formation of this electrophilic selenium species (RSe-F) was confirmed by heteronuclear NMR spectroscopy.

A dip catalyst consisting of Pd nanoparticles immobilized on the surface of thin slices of jute-stem was fabricated. Its versatility as a hydrogen transfer agent for styrenyl, cyclic and unfunctionalized olefins and N-heterocycles was investigated.

A novel and sustainable procedure for the synthesis of 3-selenylindoles employing diorganyl diselenides and indoles or electron-rich arenes and promoted by visible light was developed.

A one-pot, membrane-assisted synthesis of 2,4,5-trisubstituted-2-imidazolines was developed, and substituent effects, reaction kinetics and mechanism by DFT were studied.

Laccase-catalyzed green reaction between catechols and 2-thioxopyrimidin-4-ones delivers novel pyrimidobenzothiazoles and catechol thioethers with antiproliferative activities against HepG2 cell line.

A metal-free oxidation system employing tert-butyl hydroperoxide (TBHP) has been developed for selective oxidation of structurally diverse benzylic sp³ C–H bonds.

A convenient approach towards 5-(aryl/alkyl)amino-1,2,4-triazines and α-arylamino-2,2′-bipyridines was developed following ipso-substitution of a cyano-group by amino groups and, finally, aza-Diels-Alder reaction with 1-morpholynocyclopentene.

Taurine (2-aminoethanesulfonic acid), a semi-essential amino acid that exists in the human body and numerous other living creatures, is used as a green bio-organic catalyst for the promotion of the Knoevenagel reaction between aldehydes and malononitrile.

Preparation of nanostructured diphosphate Na₂CaP₂O₇. Avoiding of any acid catalysts. The prepared catalyst is reusable and eco-friendly. The method is easy and contains simple experimental procedure.

Mechanochemistry was effective for the preparation of 3,5-disubstituted hydantoins from α-amino methyl esters, using either 1,1′-carbonyldiimidazole (CDI) or alkyl isocyanates.

Cu(II) immobilized on Fe₃O₄@SiO₂@L-arginine as a novel nanostructured compound catalyzed the cycloaddition reaction of organic nitriles and sodium azide to produce 5-substituted 1H-tetrazoles.

A deep eutectic solvent (DES) and polyethylene glycol (PEG) promoted the environmentally friendly and fast synthesis of dithiocarbamate derivatives via a one-pot, three-component condensation of an amine, carbon disulfide, and a variety of electrophilic reagents in high yields and short reaction times without organic solvents and tedious work-up.