Direct NH-aziridination of α,β-unsaturated ketones
作者:Jiaxi Xu、Peng Jiao
DOI:10.1039/b200046f
日期:2002.6.7
1-Aryl-α,β-unsaturated ketones were directly aziridinated, N-unsubstituted, in a one-pot reaction with satisfactory yields by N,Nâ²-diamino-1,4-diazoniabicyclo[2.2.2]octane dinitrate, a nitrogenânitrogen ylide precursor, in the presence of sodium hydride.
Amine-Promoted, Organocatalytic Aziridination of Enones
作者:Alan Armstrong、Carl A. Baxter、Scott G. Lamont、Andrew R. Pape、Richard Wincewicz
DOI:10.1021/ol062852v
日期:2007.1.1
A novel method is presented using N-N ylides (prepared by in situ amination of a tertiary amine) for the aziridination of a range of enone systems. The amine may be used sub-stoichiometrically, and promising levels of enantioselectivity are observed with quinine as promoter. [reaction: see text].
A highly effective aziridination reagent, based on N-methylmorpholine, is reported which effects rapid conversion of chalcones to N-unfunctionalised aziridines at room temperature.
One-pot synthesis of γ-lactams from ketoaziridines
作者:Lorena S. R. Martelli、Otavio A. M. da Silva、Julio Zukerman-Schpector、Arlene G. Corrêa
DOI:10.1039/d3ob01568h
日期:——
The remarkable biological activities of γ-lactams have stimulated the search for efficient synthetic methods to achieve these scaffolds. In this work, we have developed a simple one-pot diastereoselective synthesis of new γ-lactams from ketoaziridines with moderate to good yields via the Horner–Wadsworth–Emmons reaction, followed by an intramolecular ester-aziridine cyclization and its opening in situ
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.