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An efficient, experimentally simple, and convenient procedure for the C-O coupling of organic halides with phenols and alcohols in a PEG1000-DAIL[CdCl3]-toluene temperature-dependent biphasic system has been developed. The product can be easily isolated by a simple decantation, and the catalytic system can be recycled and reused without loss of catalytic activity. On a mis au point une méthode commode, efficace et expérimentalement simple de faire un couplage C-O d'halogénures organiques avec des phénols et des alcools dans un système biophysique PEG1000-DAIL[CdCl3]-toluène qui varie avec la température. Les produits peuvent être facilement isolés par une simple décantation et le système catalytique peut être recyclé et réutilisé dans perte d'activité catalytique. [ABSTRACT FROM AUTHOR]

A facile and efficient synthesis of bibenzyl and biaryl derivatives by reductive homocoupling reaction is described. Treatment of benzyl and aryl halides with metallic zinc and copper powder in the presence of a catalytic amount of [Cmim][CuCl] under ligand- and base-free conditions gives the corresponding bibenzyls and biaryls in good to high yields. The product can be isolated by a simple extraction with organic solvent, and the catalytic system can be recycled or reused without any significant loss of catalytic activity. Graphical Abstract: [Figure not available: see fulltext.] [ABSTRACT FROM AUTHOR]

An ionic liquid is used as a catalyst for the synthesis of cyclic carbonates (III) from epoxides (I) and carbon dioxide. [ABSTRACT FROM AUTHOR]

An eco-friendly, easy, and efficient recyclable approach to carboxylic esters, acids, and lactones via oxidation is introduced. [ABSTRACT FROM AUTHOR]

A series of MCM-41 supported functionalized ionic liquids doped with copper species were prepared, characterized and evaluated as catalysts in the Biginelli reaction. Most of these supported ionic liquids perform well in the reaction, especially the multifunctional copper coordinated MCM-41 supported heterogeneous catalysts (0.5)IL-TiCl 5 @MCM-41@Cu(15) and (0.5)IL-HSO 4 @MCM-41@Cu(15). The catalytic tests revealed that (0.5)IL-HSO 4 @MCM-41@Cu(15) was the best and powerful catalyst in the Biginelli reaction for the preparation of 3,4-dihydropyrimidinones with high to excellent yields. The catalyst can be easily separated from the reaction mixture by filtration and reused in six consecutive cycles without significant loss in catalytic activity. [ABSTRACT FROM AUTHOR]

A concise, efficient method to sulfonyl quinones and sulfonyl-1,4-diols through Ir-catalyzed C-S coupling of quinones with sulfonyl chloride has been developed. Thus, this methodology proves its value as a versatile synthetic tool for a broad range of sulfonyl quinones, producing good to excellent yields. Graphical Abstract: [ABSTRACT FROM AUTHOR]