Publications by authors named "Kodirajan Selvakumar"
An efficient and anions fluorescence "on-off" sensor of 1-(prop-2-yn-1-yl)-3-(quinolin-3-ylimino)indolin-2-one (PQI) has been developed for the selective sensing of dual anions of F and NO ions in aqueous medium. Active hydrogen and Lewis acidic binding sites free, Z- isomer of isatin based π-conjugated quinoline exhibited excellent sensing activity against F and NO ions in UV light. The fluorescence turns on the process accomplished via the PET "on-off" mechanism.
View Article and Find Full Text PDFAn activation of the pyridine nucleus has been achieved via 1,5-electrocyclization of vinyl pyridinium ylides generated from bromo isomerized Morita-Baylis-Hillman adducts of isatin and pyridine under basic conditions. The method has been successfully applied for an efficient synthesis of a number of 3-spirodihydroindolizine-2-oxindoles, which have been found as core structure of secoyohimbane and heteroyohimbane alkaloid natural products.
View Article and Find Full Text PDFArticle Synopsis
- Phosphorus and sulfur ylides are used to efficiently synthesize specific compounds, namely 3-spirocyclopentene- and 3-spiropyrazole-2-oxindoles.
- The synthesis involves E- and Z-isomers of bromo derivatives of Morita-Baylis-Hillman adducts of isatin using certain chemical reagents.
- This process utilizes a [3 + 2]-annulation strategy, highlighting a novel approach in organic chemistry.