An efficient and practical method is described for the ring-opening reactions of N-tosylaziridines with various thiols in water under mild conditions. Various surfactants have been evaluated to optimize the reactions. Under optimal conditions, these reactions gave rise to the corresponding β-amino sulfides in good to excellent yields.
An efficient synthetic method for bis（indol-3-yl）alkane derivatives has been developed.In the presence of 5 mol%of pyridinium tribromide（PTB）,the condensation of indoles and aldehydes proceeded smoothly under mild conditions,giving rise to the corresponding bis（indol-3-yl）alkanes in good to excellent yields.
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.
