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.
作者:Jawahar L. Jat、Ajay K. Yadav、Chandra Bhan Pandey、Dinesh Chandra、Bhoopendra Tiwari
DOI:10.1021/acs.joc.1c02785
日期:2022.3.4
The first direct general method for N-Me aziridination of electron-deficient olefins, enones, is described using N-methyl-O-tosylhydroxylamine as the aminating agent in the presence of a Cu(OTf)2 catalyst. The aziridination of vinyl ketones, hitherto unknown for N-Me as well as N-H, has been achieved efficiently. The open-flask reaction is stereospecific, operationally simple, and additive-free. It