Pyridine-N-oxide: An Efficient Organocatalyst for Ring-Opening Reactions of Aziridines with Aryl Thiols
作者:Qin Yang、Zhenlan Yin、Min Yang、Yiyuan Peng
DOI:10.1002/cjoc.201190064
日期:2011.1
Pyridine‐N‐oxide serves as an efficient catalyst for the ring‐opening reactions of N‐tosylaziridines with various aryl thiols under mild conditions. This transformation is highly effective, which gives rise to the corresponding β‐amino sulfides in good to excellent yields.
Enantioselective desymmetrization of meso-aziridines with aromatic thiols catalyzed by chiral bifunctional quaternary phosphonium salts derived from α-amino acids
Desymmetrization of meso-aziridines with aromatic thiols was realized by using alpha-amino acids-derived chiral quaternary phosphonium salts catalysts to provide chiral beta-amino sulfides with high yields (up to 99%) and in moderate enantioselectivities (up to 70%). (C) 2015 Elsevier Ltd. All rights reserved.