Iodine-Mediated and Metal-Catalyzed Synthesis of Heterocycles via Electrophilic 6-endo-dig Ring Closure of Alkynes ABSTRACT SUBMITTED TO THE UNIVERSITY OF DELHI FOR THE AWARD OF THE DEGREE OF DOCTOR OF PHILOSOPHY
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SUBMITTED TO THE UNIVERSITY OF DELHI FOR THE AWARD OF THE DEGREE OF DOCTOR OF PHILOSOPHY
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ABSTRACT OF Ph.D. THESIS Design and Synthesis of Pyrazines, Imidazolones, Chromones and their Anticancer and Transacetylase Activities TO BE SUBMITTED TO THE UNIVERSITY OF DELHI FOR THE AWARD OF DEGREE OF DOCTOR OF PHILOSOPHY BY
OF Ph.D. THESIS Design and Synthesis of Pyrazines, Imidazolones, Chromones and their Anticancer and Transacetylase Activities TO BE SUBMITTED TO THE UNIVERSITY OF DELHI FOR THE AWARD OF DEGREE OF DOCTOR OF PHILOSOPHY
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Substituted 2, 4- diphenyl quinolines were synthesized by a multicomponent domino reaction of anilines, aldehydes and terminal aryl alkynes. The synthetic pathway involves the formation of an imine, followed by the intermolecular addition of an alkyne to the imine. This intermediate immediately undergoes ring closure and oxidative aromatization. The reaction is catalyzed by natural kaolin, a st...
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An operationally simple approach for the stereoselective tandem synthesis of novel thiazolo fused naphthyridines and thienopyridines by the reaction of o-alkynylaldehydes with L-cystine methyl ester hydrochloride via Au(III)-catalyzed regioselective 6-endo-dig ring closure under mild reaction conditions is described. It is noteworthy that alkynes bearing an alkyl and a strong electron-withdrawi...
متن کاملNatural kaolin as an efficient recyclable catalyst for the synthesis of new 2,4-disubstituted quinolines
Substituted 2, 4- diphenyl quinolines were synthesized by a multicomponent domino reaction of anilines, aldehydes and terminal aryl alkynes. The synthetic pathway involves the formation of an imine, followed by the intermolecular addition of an alkyne to the imine. This intermediate immediately undergoes ring closure and oxidative aromatization. The reaction is catalyzed by natural kaolin, a st...
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