Tetrahedron

Catalyst-free 1, 3-dipolar cycloaddition of 3-nitrochromen with sodium azide: a facile method for the synthesis of 4-aryl-1, 4-dihydrochromeno [4, 3-d][1, 2, 3] triazole …

PM Habib, BR Raju, V Kavala, CW Kuo, CF Yao

Index: Habib, Pateliya Mujjamil; Rama Raju; Kavala, Veerababurao; Kuo, Chun-Wei; Yao, Ching-Fa Tetrahedron, 2009 , vol. 65, # 29-30 p. 5799 - 5804

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Citation Number: 23

Abstract

1, 3-Dipolar cycloaddition of 3-nitrochromen with sodium azide under catalyst-free conditions afforded 4-aryl-1, 4-dihydrochromeno [4, 3-d][1, 2, 3] triazole derivatives at 80° C in DMSO is described. The generality of this reaction was demonstrated by synthesizing an array of 4-aryl-1, 4-dihydrochromeno [4, 3-d][1, 2, 3] triazole derivatives. Clean reaction conditions, easy isolation, and good yields of the triazoles are the salient features of the ...