No abstract

No abstract

No abstract

An environmentally benign and efficient process for the preparation of thioethers was developed by simple and practical reactions of alkyl halides and thiols in water in the presence of K 2 CO 3 or Et 3 N in very high yields. The reaction of aryl, alkyl, aliphatic and hindered thiols with various alkyl halides gave the corresponding products with significant advantages such as high conversions, short reaction time, mild reaction conditions, and low cost, simple workup with good to quantitative yields.

An efficient, rapid and green synthesis of glycoluril, imidazolidine-2-one, imidazole-2-one and imidazole-2-thiol derivatives have been accomplished by the reaction of urea/thiourea derivatives and αdiketone at 100 • C in the presence of trimethylsilyl chloride (TMSCl) as Lewis acid catalyst under solvent-free conditions. This approach offers many advantages such as good product yields, various products, short reaction time, easy isolation of products, facile purification and environmentally benign reaction conditions.