Articles written in Journal of Chemical Sciences
Volume 121 Issue 4 July 2009 pp 429-433
A series of amidoalkyl naphthols were prepared in high yields using various aldehydes and urea or amides. The reaction was catalysed by Cu1.5PMo12O40 (CuPMo) and Cu1.5PW12O40 (CuPW) and conducted in molten tetrabutylammonium bromide as an ionic liquid.
Volume 126 Issue 3 May 2014 pp 881-887 Regular Articles
Dimethylurea/citric acid deep eutectic solvent was used as a dual catalyst and a green reaction medium for the efficient synthesis of
Volume 126 Issue 4 July 2014 pp 1039-1047
An efficient synthesis of some new 1, 8-dioxo-decahydroacridines is achieved via one-pot, threecomponent condensation of aromatic aldehydes, cyclic diketone, and 4-amino benzamide/4-aminophenol. Reaction of these acridines with dimethylacetylene dicarboxylate and triphenylphosphine or cyclohexylisocyanide gives stable phosphorus ylides or 4H-chromene derivatives, respectively, with good yields.
Volume 127 Issue 10 October 2015 pp 1795-1800
This investigation was set to provide derivatives of thiazolidin-4-ones incorporated with amino-alkyl naphthols in a molecular frame work. For this purpose, a series of 1-thiocarbamidoalkyl-2-naphthols was prepared by the three component condensation of aromatic aldehydes, phenylthiourea and 2-naphthol. In the next step, these compounds underwent reaction with dialkyl acetylenedicarboxylates at ambient temperature in ethanol to afford the corresponding 4-thiazolidinones in high yields. Following the completion of the reaction, the products were solidified and isolated by filtration. The method is easy, inexpensive, chemoselective and environmentally benign and illustrates an interesting instance of click chemistry.
Volume 128 Issue 1 January 2016 pp 111-117 Regular Articles
3-Phenyl-2-(1-𝐻-pyrrol-1-yl) propanoic acid has been used as a ketene source in synthesizing of monocyclic-2-azetidinones. Hindrance in ketene and imines successfully controlled the diastereoselectivity of the reaction. For example, in some cases only one isomer was achieved. By using Mukaiyama reagent, the leaving group in acid was activated and the by-products were separated by simple aqueous work-up. DFT calculation indicated that the benzyl-𝑁-pyrrolylketene has nonconjugated structure and the pyrrolyl ring is perpendicular to the ketene plane in both the twisted and planar structures.