Facile preparation of allyl amines and pyrazoles by hydrazinolysis of 2-ketoaziridines
作者:Gang Chen、Mikio Sasaki、Andrei K. Yudin
DOI:10.1016/j.tetlet.2005.11.039
日期:2006.1
Allyl amines and pyrazoles can be obtained by hydrazinolysis of 2-ketoaziridines. A variety of aziridines, including N-unprotected, N-substituted, as well as bicyclic enamine and aminal type, can be transformed into diversely substituted linear or cyclic products. The hydrazinolysis of homochiral aziridines proceeds without racemization. (c) 2005 Published by Elsevier Ltd.
Oxidative Cycloamination of Olefins with Aziridines as a Versatile Route to Saturated Nitrogen-Containing Heterocycles
作者:Mikio Sasaki、Andrei K. Yudin
DOI:10.1021/ja037726q
日期:2003.11.1
Highly reactive [5,3] and [6,3] bicyclic aziridines can be readily prepared from the corresponding NH aziridines and N-bromosuccinimide by intramolecular oxidative cycloamination of olefins. These compounds, including surprisingly stable exo-methylene bicyclic aziridines, provide versatile synthetic entries into a wide range of pyrrolidine- and piperidine-containing heterocycles.