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Glycosyl azides, prepared in situ from glucal and trimethylsilyl azide via Ferrier rearrangement, undergo smooth coupling with alkynes under neutral conditions by means of ‘Click reactions’ to furnish 1,2,3-triazole-linked glycoconjugates in high yields and with moderate stereoselectivity. The method provides a convenient route to prepare glycoconjugates from glucals, trimethylsilyl azide, and alkynes...
2-Azidoalcohols derived in situ from epoxides and sodium azide undergo smooth coupling with alkynes under neutral conditions by means of ‘click reactions’ to furnish β-hydroxytriazoles in excellent yields and with high regioselectivity. This reaction proceeds smoothly in water at room temperature without the need for acid catalysis.
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