Cycloaddition of 2-Methyleneaziridines with Isocyanates Catalyzed by Tin Iodide

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Abstract

2-Methyleneaziridines proved to be good substrates for the cycloaddition with isocyanates, for which a tin iodide system, Bu2SnI2–LiI, was employed as an effective catalyst. Products were derived from N-attack of the ring-opened metalloenamine intermediate.

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