Efficient Aziridination of α,β-Unsaturated Ketones withO-(2,4-Dinitrophenyl)-hydroxylamine
摘要:
The aziridination of alpha,beta-unsaturated ketones with O-(2,4-dinitrophenyl)-hydroxylamine and tertiary amine was developed. trans-Aziridines were obtained exclusively in good yields. The reaction is proposed to occur via an aminimide intermediate.
Tertiary amine-promoted enone aziridination: investigations into factors influencing enantioselective induction
作者:Alan Armstrong、Robert D.C. Pullin、Chloe R. Jenner、Klement Foo、Andrew J.P. White、James N. Scutt
DOI:10.1016/j.tetasy.2013.11.008
日期:2014.1
synthesised (up to 77% ee) via a chiral tertiary amine-promoted nucleophilic aziridination of α,β-unsaturated ketones utilising in situ generated N–N ylides (aminimines). A wide range of chiral tertiary amines were synthesised and evaluated, allowing structure–activity relationships to be drawn. The most efficient promoter for asymmetric aziridination, quinine, was assessed with several enones to ascertain
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.
Chiral rare earth metal complex-catalyzed conjugate addition of O-alkylhydroxylamines. An efficient synthetic entry into optically active 2-acyl aziridines
作者:Xiu Lan Jin、Hiroyasu Sugihara、Kazuhiro Daikai、Hiroki Tateishi、Yong Zhi Jin、Hiroshi Furuno、Junji Inanaga