Ring-Opening Reactions of the <i>N</i>‑4-Nosyl Hough–Richardson Aziridine with Nitrogen Nucleophiles

Dinosylated α-d-glucopyranoside was directly transformed into α-d-altropyranosides via in situ formed N-4-nosyl Hough–Richardson aziridine with nitrogen nucleophiles under mild conditions in fair to excellent yields. The scope of the aziridine ring-opening reaction was substantially broadened contrary to the conventional methods introducing solely the azide anion at high temperatures. If necessary, the N-4-nosyl Hough–Richardson aziridine can be isolated by filtration in a very good yield and high purity.