Rhodium(II,II) Dimer as an Efficient Catalyst for Aziridination of Sulfonamides and Amidation of Steroids Jiang-Lin Liang Shi-Xue Yuan Philip Wai Hong Chan Chi-Ming Che 10.1021/ol0270475.s001 https://acs.figshare.com/articles/journal_contribution/Rhodium_II_II_Dimer_as_an_Efficient_Catalyst_for_Aziridination_of_Sulfonamides_and_Amidation_of_Steroids/3744837 Unsaturated sulfonamides underwent direct intramolecular aziridination catalyzed by Rh<sub>2</sub>(OAc)<sub>4</sub> with PhI(OAc)<sub>2</sub> and Al<sub>2</sub>O<sub>3</sub> to give the corresponding aziridine products in excellent yields (up to 98%) and with good to excellent conversions. High turnovers (up to 1375) were achieved. The intermolecular rhodium-catalyzed amidation of cholesteryl acetate with PhINTs or PhI(OAc)<sub>2</sub>/NH<sub>2</sub>R as the nitrogen source exhibited both excellent regio- and α-selectivity (α/β ratio up to 9:1). 2002-11-15 00:00:00 PhI Efficient Catalyst aziridine products intramolecular aziridination NH High turnovers Steroids Unsaturated sulfonamides Al 2 O 3 nitrogen source Rh 2 cholesteryl acetate