Synthesis of some substituted quinoxalines and polycyclic systems containing the quinoxaline nucleus

AR Ahmad, LK Mehta, J Parrick

Index: Ahmad, Abid R.; Mehta, Lina K.; Parrick, John Journal of the Chemical Society - Perkin Transactions 1, 1996 , # 20 p. 2443 - 2449

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Citation Number: 25

Abstract

The synthesis is described of quinoxalines 11, 14, 15, 16, 20, 21, 23 and 25 of interest as intermediates. The preparation of 21 from 3 by the action of thiourea and the formation of the hexaazapentacycle 23 from sulfide 20 and butylamine are discussed. The methylation of the dione 10 is reinvestigated and the product found to be a mixture of 29 and 30. The preparation of dimethoxyquinoxaline podands, eg, 32, 33, 34, 40 and 41, tricyclic crown ...

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