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Efficient synthesis of novel8,8-dimethyl-2-(4-nitrophenyl)-5-phenyl-5,7,8,9-tetrahydro-6h-(1,3,4)thiadiazolo(2,3-b)quinazolin-6-one catalyzed by cui2

Author: 
Dr. Sirisha, D.V.L., Dr. Prathap, K., Durgarao, B.V., Suresh Gowd, V., Dr. Krishnarao, N. and Dr. Shaik Lakhman
Subject Area: 
Life Sciences
Abstract: 

In this study, a novel series of 8,8-dimethyl-2-(4-nitrophenyl)-5-phenyl-5,7,8,9-tetrahydro-6H-(1,3,4) thiadiazolo (2,3-b)quinazolin-6-one was synthesized using a novel Lewis acid-based method with CuI2 as a catalyst. CuI2 catalytic potential was determined by a one-pot three-component reaction involving dimedone, substituted aromatic aldehydes, and 5-(4-nitrophenyl)-1, 3, 4-thiadiazol-2-amine in the presence of ethanol as a solvent, which produced an array of new thiadiazolo (2,3-b) quinazolin-6-one scaffolds. This component can be produced by refluxing 4-nitrobenzoic acid and semithiocarbazide with ethanol and sulphuric acid present. This recently developed technology offers a number of noteworthy advantages, including a low E-factor, high reaction mass efficiency, atom economy, scalability, short reaction time.

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