3-Phenyl-2-tert-butyloxaziridine has been shown to behave as an oxidant under 800 MPa at 100 °C to oxidize sulfides to sulfoxides, in spite of having been reported to be inactive as an oxidant and to undergo thermal rearrangement to N-tert-butyl-α-phenylnitrone at atmospheric pressure. It has been shown that under thermal and high-pressure conditions the ability of the oxaziridine to react changes dramatically. The mechanism for the high-pressure reaction is also discussed.
Synthesis of Dihydrobenzisoxazoles by the [3 + 2] Cycloaddition of Arynes and Oxaziridines
作者:Arif Kivrak、Richard C. Larock
DOI:10.1021/jo101656c
日期:2010.11.5
unusual cleavage of the C−O bond of the oxaziridine and tolerates a variety of substituents on the oxaziridine and the o-(trimethylsilyl)aryl triflate to form aryl-, heteroaryl-, alkyl-, and naphthyl-substituted dihydrobenzisoxazoles. The resulting halogen-substituted dihydrobenzisoxazoles are readily elaborated to more complex products using palladium-catalyzed crossing-coupling processes.
Synthesis of new 3,5-diarylisoxazolidines by cycloaddition of oxaziridines and alkenes
作者:Marilena Fabio、Ludovico Ronzini、Luigino Troisi
DOI:10.1016/j.tet.2007.10.044
日期:2007.12
a novel process of cycloaddition of C-aryloxaziridines with a variety of alkenes to afford stable, five-membered heterocycles 13–24. The steric hindrance of the tert-butyl group on the nitrogenatom of the oxaziridine is responsible for the high stereoselectivity of the cycloaddition reaction.