- Synthesis of 2-chloro-2-imidoylaziridines via aza-darzens-type reaction of 3,3-dichloro-1-azaallylic anions and N-(arylsulfonyl)imines
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3,3-Dichloro-1-azaallylic anions, generated by deprotonation of α,α-dichloroketimines 10 with lithium diisopropylamide, reacted with N-sulfonylaldimines 7 to produce the Mannich-type products N-[2,2-dichloro-3- (N-alkylimino)-1,3-diarylpropyl]benzenesulfo
- Giubellina, Nicola,Mangelinckx, Sven,Toernroos, Karl W.,De Kimpe, Norbert
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p. 5881 - 5887
(2007/10/03)
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- Lewis acid catalyzed dipolar cycloadditions of an activated imidate
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An evaluation of simple Lewis acids revealed that N-malonylimidates undergo catalyzed [3+2] cycloaddition reactions with aldehydes, imines, and activated olefins to form oxazolines, imidazolines, and pyrrolines, respectively. Reactions proceed optimally at ambient temperature with the addition of 5 mol % of MgCl2 in CH3CN. Experiments aimed at elucidation of the reactive intermediate undergoing cycloaddition suggest that the Lewis acid promotes a 1,2-prototropic shift to give a metal-coordinated azomethine ylide, rather than ionization and proton transfer to give a nitrile ylide.
- Bowman, Roy K.,Johnson, Jeffrey S.
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p. 8537 - 8540
(2007/10/03)
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- An easy synthesis of aliphatic and aromatic N-sulfonyl aldimines
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N-Arenesulfonyl aldimines were prepared from aliphatic and aromatic aldehydes in a two-step transformation.
- Chemla, Fabrice,Hebbe, Virginie,Normant, Jean-F.
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- Sulfonimines as bleach catalysts
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Novel bleach catalysts, a method for bleaching substrates using these catalysts and detergent compositions containing the catalysts are reported. The catalysts are sulfonimines. Substrates such as fabrics may be bleached in an aqueous solution containing
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