Abstract
A diversified synthesis of 2-(4-oxo[1,2,3]triazolo-[1,5-a]quinoxalin-5(4H)-yl)acetamide derivatives is demonstrated. The protocol employs a Ugi four-component reaction for the assembling of N-(2-haloaryl)propynamide intermediates and followed by a copper-catalyzed tandem reaction of the synthetic N-(2-haloaryl)propynamides with sodium azide. Such a method provides rapid access to structurally varied and complex fused tricyclic scaffolds through readily available starting materials.
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