Tetrahedron Letters

An expedient synthesis of 1, 2-dihydrobenzo [g] quinoline-5, 10-diones via copper (II) triflate-catalyzed intramolecular cyclization of N- …

BD Bala, S Muthusaravanan, S Perumal

Index: Devi Bala, Balasubramanian; Muthusaravanan, Sivasubramanian; Perumal, Subbu Tetrahedron Letters, 2013 , vol. 54, # 29 p. 3735 - 3739

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Citation Number: 8

Abstract

An expedient synthesis of a series of 1, 2-dihydrobenzo [g] quinoline-5, 10-diones in good yields has been accomplished via three-component one pot sequential reactions of 2- hydroxynaphthalene-1, 4-dione, substituted anilines and propargyl as well as 3- ethylpropargyl bromides furnishing N-propargylaminonaphthoquinones, and their concomitant copper (II) triflate-catalyzed intramolecular 6-endo-dig cyclization.