Direct Transfer of the Sulfonylimino Group of Imino-l3-Bromane to N-Heterocycles and Trialkylamines: Synthesis of N-Iminoammonium Ylides under Metal-Free Conditions.

[摘要]：Exposure of N-heterocycles and aliph. trialkylamines to trifluoromethanesulfonylimino-l3-bromane at room temp. results in direct transfer of the sulfonylimino group to the nitrogen atoms and affords a variety of iminoammonium ylides under transition-metal-free conditions. The imino-l3-bromane probably serves as an active nitrenoid species without any activation and produces the ammonium ylides via a bimol. nucleophilic substitution process.

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