期刊
EUROPEAN JOURNAL OF ORGANIC CHEMISTRY
卷 2018, 期 14, 页码 1634-1645出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejoc.201701806
关键词
Synthetic methods; Nitrogen heterocycles; Aziridines; Imidazoles; Ring expansion; Sulfonyl migration
The oxidative phthalimidoaziridination of conjugated unsaturated N-sulfonylimines leads, in most cases, to di-substituted, tri-substituted and spiro-fused imidoylaziridines in synthetically useful yields typically above 70 %. The latter are thermally transformed into di-substituted, tri-substituted, and condensed N-sulfonylimidazoles. Interestingly, this ring expansion is accompanied by an intramolecular 1,3-sulfonyl shift from one nitrogen atom to another.
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