Efficient and selective azidation of per-O-acetylated sugars using ultrasound activation: application to the one-pot synthesis of 1,2,3-triazole glycosides
Résumé
A new protocol was developed for the selective transformation of acetyl-sugars to triazolyl nucleosides using in situ generated SO 2 (N 3 ) 2 , iron/copper cocatalysis and ultrasound activation.